The Ener Gia Group Companies ■ Electric power business, Electric power business support and others CHUDEN KOGYO CO., LTD. CHUDEN PLANT CO., LTD. CHUGOKU INSTRUMENTS CO., INC. CHUDEN KANKYO TECHNOS CO., LTD. Chugoku Electric Power Australia Resources Pty. Ltd. Chugoku Electric Power International Netherlands B.V. Denryoku Support Chugoku Co., Inc. CHUDEN ENGINEERING CONSULTANTS CO., LTD. Chiba Power Corporation TEMPEARL INDUSTRIAL CO., LTD. CHUGOKU KOATSU CONCRETE INDUSTRIES CO., LTD. Setouchi Joint Thermal Power Co., LTD. Setouchi Power Corporation Osaki CoolGen Corporation AIR WATER & ENERGIA POWER YAMAGUCHI CORPORATION CHUDENKO CORPORATION The Chugoku Electric Manufacturing Company, Incorporated OZUKI STEEL INDUSTRIES CO., LTD. EAML Engineering Company Limited Public Relations Communication Group Regional Relations Division 4-33 Komachi, Naka-ku, Hiroshima 730-8701 Japan TEL: +81-(0)82-544-2849 FAX: +81-(0)82-504-7006 URL: http://www.energia.co.jp/ Issued in November 2016 We devote our entire power to supporting the community and the future. This booklet was printed with environment-friendly vegetable oil ink. Percentage of Waste Paper pulp 70% As of October 1, 2017 ■ Information and telecommunications operations Energia Communications, Inc. ■ Comprehensive energy supply operations Energia Solution & Service Company, Incorporated Power Engineering and Training Services, Incorporated MIZUSHIMA LNG COMPANY, LIMITED ■ Business and life support operations Energia L&B Partners Co., Inc. EnerGia Business Service Co., Inc. The Energia Logistics Co., Inc. ADPLEX Co., Ltd. EnerGia Care Service Co., Inc. CHUGOKU HEALTH AND WELFARE CLUB CO., INC. Houseplus Chugoku Housing Warranty Corporation Limited ■ [Reference] Electrical Safety Chugoku Electrical Safety Inspection Association
Transcript
The EnerGia Group Companies
■ Electric power business, Electric power business support and others
CHUDEN KOGYO CO., LTD.
CHUDEN PLANT CO., LTD.
CHUGOKU INSTRUMENTS CO., INC.
CHUDEN KANKYO TECHNOS CO., LTD.
Chugoku Electric Power Australia Resources Pty. Ltd.
Chugoku Electric Power International Netherlands B.V.
Denryoku Support Chugoku Co., Inc.
CHUDEN ENGINEERING CONSULTANTS CO., LTD.
Chiba Power Corporation
TEMPEARL INDUSTRIAL CO., LTD.
CHUGOKU KOATSU CONCRETE INDUSTRIES CO., LTD.
Setouchi Joint Thermal Power Co., LTD.
Setouchi Power Corporation
Osaki CoolGen Corporation
AIR WATER & ENERGIA POWER YAMAGUCHI CORPORATION
CHUDENKO CORPORATION
The Chugoku Electric Manufacturing Company, Incorporated
OZUKI STEEL INDUSTRIES CO., LTD.
EAML Engineering Company Limited
Public Relations Communication GroupRegional Relations Division4-33 Komachi, Naka-ku, Hiroshima 730-8701 JapanTEL: +81-(0)82-544-2849 FAX: +81-(0)82-504-7006 URL: http://www.energia.co.jp/
Issued in November 2016
We devote
our entire power
to supporting
the community
and the future.
This booklet was printed with environment-friendlyvegetable oil ink.Percentage of Waste Paper pulp 70%
As of October 1, 2017
■ Information and telecommunications operationsEnergia Communications, Inc.
■ Comprehensive energy supply operations
Energia Solution & Service Company, Incorporated
Power Engineering and Training Services, Incorporated
MIZUSHIMA LNG COMPANY, LIMITED
■ Business and life support operationsEnergia L&B Partners Co., Inc.
With the start of the full liberalization of retail
electric power sales in April 2016, the business
environment surrounding our corporate
group is undergoing great change like we
have never experienced before, including
preparation for the legal separation of power
transmission/distribution sectors, which will
start in 2020.
To respond to these changes in the business
environment, we advocate “Trust. Creation.
Growth.” as our new management philosophy.
The group will rethink our grassroots upon
which we developed our business focused
on electricity with the Chugoku Region as
our business hub, while receiving support
from the people in the community to help us
grow. At the same t ime, in l ight of the
upcoming changes in our business environment,
we p lace grea t impor tance on these
as a Group going into the future.
We will face the challenges of the new age
as each employee in our Group companies
pulls together as a whole under our new
management philosophy.
For over 60 years, our group has made it our
mission to contribute to the development of
the Chugoku Region by delivering quality,
stable, and inexpensive electric power.
Though the new age we are entering is
undergoing major reform of electric power
systems, the foundation of our business has
always been the Chugoku Region and that
will not change. We will continue to protect
the stable supply of electric power in the
Chugoku Region into the future. As we
thoroughly enforce increased management
efficiency, we will also create and deliver
new va lue in our Group’s unique way
through rate plans and s e r v i c e s t h a t
please our customers. In this way, we aim
to be a corporation that our customers and
the Chugoku Region will come to regard as
“absolutely indispensable.”
Furthermore, in order to grow further into the
future, the Chugoku Electric Group believes
that it is necessary to identify new growth
opportunities in fields where we can capitalize
up o n o u r G ro up ’s s t re ng t h s . We are
thinking about ways to be able to use the
technology and exper tise that we have
cultivated centered on the electricity business
beyond the region to other locations in the
country as well as overseas and wish to
respond to change in a flexible manner.
It is through these efforts that we aim to
be “ the corporate group that is chosen
by c o m mun i t i e s a nd g rows beyo nd
communities.”
This cannot be achieved wi thout our
b u s i n e s s e a r n i n g t h e t r u s t o f o u r
cus tomers . As we pay even s t r ic te r
attention to compliance especially as we
enter an age of competition, we will bond
firmly with the people in our region and
venture in to the fu ture together w i th
communities, while we continue dialog
with them from the same point of view
and standpoint so that we can respond
to the d iverse needs o f ever yone in
the region.
And, we will disseminate information in
a pro-active manner and respond to the
voice of customers with sincerity and
integrity so that we will be a corporation
f u r t h e r t r u s te d a n d c h o s e n by o u r
customers.
New Management Philosophy“Trust. Creation. Growth.”
Chosen by communities andgrowing beyond communities
Corporate Data
Organization Chart (As of October 1, 2017)
Corporate Name
Address (Head Office)
Date of Establishment
Paid-in Capital
Number of Shares Issued
Number of Stockholders
Number of Employees
The Chugoku Electric Power Co., Inc.
4-33 Komachi, Naka-ku, Hiroshima 730-8701 Japan
May 1, 1951
¥185,527 million
371,055,259 stocks
122,585
9,305
Striving to become a corporate group
that is chosen by communities and
grows beyond communities.
THE CHUGOKU ELECTRIC POWER CO., INC.
Mareshige ShimizuRepresentative Director
President & Chief Executive Officer
0201
Fulfill the expectationsour stakeholders
(As of March 31, 2017)
Note: In this pamphlet, “fiscal 2017” refers to the year ended March 31, 2017. In addition, “fiscal 2018” refers to the year ending March 31, 2018.
Audit and Supervisory Committee Members OfficeAudit and Supervisory Committee
Singapore Representative Office
Regional Relations Div.
Corporate Finance and Procurement Div.
Corporate Planning Div.
Chuden Hospital
Compliance Promotion Div.
Internal Audit Div.
Human Resources Development Div.
Property Management Div.
Information System & Telecommunications Div.
Energia Economic and Technical Research Institute
Energia Economic & Technical Research InstituteRegional Offices(Tottori, Shimane, Okayama, Yamaguchi, Tokyo)
Management Committee
Shimane Billing and Payment Inquiry Center
Customer Centers
Energy Sales Centers
Energy Sales Div.
Network Service Center
Power Management Offices
Service Offices
Power Transmission & Distribution Company
Power Generation Div.
Kaminoseki Nuclear Power Plant Siting Project
Nuclear Power Reinforcement Project
International Business Div.
Thermal Power Stations
Nuclear Power Station
Hydropower Management Centers
TransformationEquipment
Number of Substations
Capacity
476
54,311 MVA
Transmission Lines Route Length Underground
Overhead
636 km
7,884 km
Distribution Lines Route Length Underground
Overhead
3,086 km
80,453 km
Generated Output(fiscal 2017)
Thermal Hydroelectric Nuclear New Energy Sources
Total
57,613 GWh
4,885 GWh
0 Wh
4,188 GWh
66,686 GWh*Includes power received from other companies.
Number and Capacity of Electric Power Stations
12
99
1
2
114
Number Capacity
Thermal
Hydroelectric
Nuclear
New Energy Sources
Total
7,801 MW
2,910 MW
820 MW
6 MW
11,536 MW*Amounts of less than 1,000 kW are rounded off, and may not add up precisely to the total.
Sa les Amount (Opera t ing Revenue) ¥1,121,789 million
Electricity Sales(fiscal 2017)
Electric Lighting
Electric Power
Total
18,184 GWh
39,070 GWh
57,254 GWh
Board of Directors President
President’s Message
Corporate Data
01
02
Thermal Power Generation
Nuclear Power Generation
Hydroelectric Power Generation
Renewable Energy
07
11
17
21
05
Transmission and Distribution 25
23
Customer Services
Approach to the Environment
31
35
29
Overseas Projects
Group Projects,Social Contributions
Human Resources andOrganization, CSR
Compliance
Major Supply Facilities
39
40
41
42
43
37
0403
For the sake of our customers,For the sake of our future,Keeping our eyes on today and tomorrow,And using our “Entire Power” for improvement.
CompassionPower
Collective Power
CreativePower
TransmissionPower
P.37
powerCollective
P.29
powerExpressive
P.23
powerTransmission
P.05
powerCreative
P.37
PowerCollective
P.29
PowerCompassion
P.23
PowerTransmission
P.05
PowerCreative
・ Requires rigorous safety measures since it poses immense risks in the event of an accident・ Final disposal site for high-level radioactive wastes must be selected
NuclearPower
・ Large quantities of electricity can be stably generated・ Can generate large quantities of electricity with small amount of fuel・ Emits no CO2 during generation・ Procurement of uranium is stable
RenewableEnergy
ThermalPower
Oil
・ Large amounts of power can be stably generated
EnergyResource
・ Reserves are comparatively small・ Concentrated in politically unstable regions and thus liable to sharp price fluctuations
・ Concerns about future procurement due to harsh international competition to acquire resources
Coal
・ Reserves are abundant and procurement is stable・ Price is comparatively stable compared with other fossil fuels
・ High CO2 emissions
LNG ・ Low CO2 emissions compared with other fossil fuels
・ Difficult to store long-term and to procure on a flexible basis・ Cost fluctuates in tandem with oil prices
・ Easy to transport, handle and store・ Power generation output is easy to adjust
Hydroelectric
・ Permanent use is possible as a genuine domestic natural resource・ Emits no CO2 during generation
・ Expected to increase in the future・ Equipment costs are low compared to other renewable energies
・ Power can be generated during daytime when demand is high・ Small-scale use is possible
・ Stable power generation is possible compared to other renewable energy・ Local resources can be utilized effectively
・ Wind and photovoltaic power generation capacity are unstable because they depend on weather and other conditions・ Power generation costs are higher than other methods
Wind Power
Photovoltaic
Biomass
・ Efficiency to convert energy into electricity is high ・ Prospects of building large dams are limited
・ Due to low generation efficiency, extensive areas are required in order to generate in large quantities
・ Power generation costs are high due to high facility construction fees・ Due to low generation efficiency, extensive areas are required in order to generate in large quantities
Advantages Disadvantages
・ Power generation costs are high because it is expensive to collect, transport and store resources which are scattered across a wide area
Main Features of the Various Energy Resources
Environment
Safety
Energy Security Economic Efficiency
0605
A country with a self-sufficiency rate of
6%, Japan makes electricity.
The energy self-sufficiency of Japan, a country with
almost no natural resources, is just 6%.
The bulk of our energy relies on imports from overseas.
We believe that it is essential to create electricity from the standpoint of "S+3Es".
The priority being "S" securing safety and the simultaneous achieving of three Es
"Energy Security", "Economic Efficiency" and "Environment".
We cannot rely on one specific power source to achieve this, and instead must take
advantage of the best characteristics of each powergeneration method to create
a well-balanced "energy mix".
CreativePower
CreativePower
This generates electric power by burning coal, oil, LGN (liquefied natural gas) and
other materials as fuel, creating high-temperature, high-pressure steam to rotate
turbines connected to generators. It produces large amounts of electricity stably and
is the power generation method most used in Japan to produce electricity.
We are devoting our efforts to technical development to improve thermal efficiency and
regulate CO2 emissions, in addition to conducting reliable fuel procurement and
facility maintenance and management.
The thermal efficiency of our thermal power stations has improved through the introduction of the LNG combined cycle and ultra supercritical generation methods and other developments. (Thermal efficiency of 40.7% was achieved in fiscal 2016.)Every 1% increase in our thermal power stations’ thermal efficiency leads to an annual fuel saving equivalent to roughly 200 million liters of fuel oil, and moreover enables a reduction of around 600,000 tons in CO2 emissions. We have been further improving our thermal efficiency by incorporating more efficient equipment when replacing aging systems. At the Yanai Power Station, we have been replacing the gas turbines, and at the Shin-Onoda Power Station, we have replaced the steam turbines.
Coal-fired thermal generation has excellent advantages in terms of supply stability and economy. In order to use it well into the future, we implemented the Osaki CoolGen Project, aiming to make a reality of an innovative low carbon-emitting coal-fired thermal power station that combines an ult imate form of high-efficiency coal-fired power generation that drastically cuts CO2 (IGFC)*1 and CO2 separation and recovery as technology for elevating operating efficiency and achieving clean operations.This project comprises verification of oxygen-blown coal-fired integrated coal gasification combined cycle power generation (oxygen-blown IGCC)*2 (first phase), IGCC verification of CO2 separation and recovery (second phase), and IGFC verification of CO2 separation and recovery (third phase). The Osaki CoolGen Corporation, which we set up jointly with Electric Power Development Co., Ltd., has been steadily proceeding with verification operation, working toward initiating verification for oxygen-blown IGCC in March 2017. In addition, we have begun a verification project for the second phase CO2 separation and recovery.The project is being conducted as a subsidized project for the Ministry of Economy, Trade and Industry (fiscal 2013-2016) and as promotional service for the New Energy and Industrial Technology Development Organization (NEDO) (fiscal 2017 and onward).
Installing New Gas Turbines (Yanai Power Station)
Tamashima Power Station Unit 1 after Modifications
With large increases in thermal fuel consumption due to the stoppageof operations at the nuclear power station and expansion of reusable energy, we are working to procure fuels in a cost-effective and steady manner required for a stable supply of electricity, responding quickly and flexibly to trends in power demands and fuel costs.Specifically, we are diversifying our fuel suppliers and contracts, are easing restrictions on fuel quality, and are making additional procurement according to the trends in power demands.In addition, we are achieving stable operations through efficient material-handling systems which include using exclusive ships and common carrier arrangements with other companies.
Main Efforts
We have introduced equipment thatimproves thermal efficiency in order tofurther increase power generation.
We procure fuel in an economic andstable manner.
We are promoting the development ofClean Coal Technology to suppressthe environmental impact ofcoal-fired thermal power stations.
Coal・Diversify procurement times (Time for determining fees)・Use coal including low-grade coal from nearer production centers (Indonesia, etc.)
・Procure additional supplies according to trends in demands (Reduce consumption of expensive oil)・Develop new suppliers
・Conduct procurement according to fluctuations in oil prices and other changes in the business environment ・Use low-grade oil・Join upstream-interest businesses (Acquired partial interest in Australia's Boggabri Coal Mine)
LNG
Oil
Other
At our coal-fired Tamashima Power Station Unit 1, we modified the boiler and other equipment to enable the use of LNG that has outstanding environmental advantages. Operation was started in April 2014.By using two different types of fuel, we can improve the stability of power supply, improve our environmental performance, and reduce fuel costs.
We are increasing the use of LNG whichemits low amounts of CO2.
0807
Creating electricity
to support
today and tomorrow.
ThermalPower Generation
*1 IGFC： Integrated Coal Gasification Fuel Cell Combined Cycle IGFC stands for "integrated coal gasification fuel cell combined cycle", IGFC is a technology that combines IGCC with fuel cells to further raise generation efficiency.
*2 IGCC： Integrated Coal Gasification Combined Cycle IGCC stands for "integrated coal gasification combined cycle". Oxygen-blown IGCC is a technology that gasifies coal using oxygen, thereby manufacturing a product gas with hydrogen and carbon monoxide as its main constituents, and generates electricity in a combined cycle using a gas turbine and a steam turbine.
Outline of the Verification Testing System
Third Stage:CO2 Separation andRecovery-type IGCC Verification
Steam
Carbon Monoxide, Hydrogen
Gas Generator
First Stage: Oxygen-blown IGCC Verification Second Stage: CO2 Separation andRecovery-type IGCC Verification
AirCompressor
GasTurbine
SteamTurbine GeneratorOxygen
ProductionEquipment
Coal
OxygenOxygen Fuel Cell
CO2
Hydrogen
Thermal Power GenerationCreativePower
The gas discharged from the thermal power station contains
various air pollutants such as sulfur oxides (SOx), nitrogen oxides
(NOx) and dust that are said to cause acid rain. Various equipment
including flue gas desulfurization equipment and flue gas
denitrification equipment are installed to remove these pollutants.
SOx, NOx Emissions Intensity (Transition of Emissions Per Amount of Energy Generated by Thermal Power)
0.6
0.5
0.4
0.3
0.2
0.1
0.0
（g/kWh）
(fiscal year)
0.30
0.16
NOx Emissions Intensity
SOx Emissions Intensity
Flue Gas Desulfurization and Denitrification Equipment(Shimonoseki Power Station)
rotates, producing approximately 20 kV of electricity.
The electricity created by the generator is
stepped up to
110 kV to 220 kV
s o i t c a n b e
t r a n s m i t t e d
without wastage.
Fuel
Thermal power stations have been forced to continue high operation
rate due to the stoppage of the nuclear power stations, and the
time that power stations can be stopped for repairs is limited.
Chugoku Electric works together with our Group companies and
affiliates to prevent trouble by increasing patrol of power generating
equipment and carrying out preventive maintenance.
The power output by gas turbines drops when the temperature rises.
Thus, we have installed gas turbine inlet air cooling systems on
the Mizushima Power Station Unit 1 and the Yanai Power Station
Unit 1 to regain the power and ensure a stable power supply
during the summer season.
Nitrogen Oxide (NOx) MeasuresTo suppress the emission of nitrogen oxides generated from the
power station, we have taken measures o improve combustion
and have installed flue gas denitrification equipment that can
remove 80% or more of generated nitrogen oxides.
Sulfur Oxide (SOx) MeasuresThe emission of sulfur oxides is suppressed by using fuel with low
sulfur content or sulfur-free fuel uch as LNG, and by installing flue
gas desulfurization equipment that can remove 90% or more of
generated sulfur oxides.
Dust MeasuresTo collect the dust that is generated from the power station, we
use electric dust collectors that utilize static electricity and filter
type dust collectors. Together with the flue gas desulfurization
equipment, we can remove 99% or more of the generated dust.
We cooperate with group companies andcooperative companies to ensure powersupply during tight supply-demand periods.
We take measures to prevent air pollution.
The output of the gas turbine, which generates electricity with the combustion energy of fuel gas and air, drops when the temperature rises and the air density (air mass) decreases. This system achieves output recovery by lowering the air temperature with the vaporization heat of the water that spouts out.
Overview of Gas Turbine Inlet Air Cooling System
Water Spray Pure Water
Inlet Air Cooling System Range
Air Compressor Gas TurbineInletFilter
Cooled Air
DrainagePurification
MonitoringDrainageDrainage
Drainage Treatment Equipment
Discharge
86 91 96 01 06 07 08 09 10 11 12 13 14 15 16
Coolant
GeneratorTurbine
Fire
Water
Water
Condenser
Air
Fuel
Steam
Diagram of a Thermal Power Station
During relatively long power generation stoppage periods for
regular inspection，we repair and replace facilities or equipment
showing age-related degradation at thermal power stations.
In addition, we stop all units sequentially before peak power
demand seasons, and perform "inspections before heavy load
periods", in which waterways and flues are cleaned over a
comparatively short period.
We will continue to maintain and improve our reliability through
accurate inspection and repairs of equipment.
Countering Age-related Degradation:Replacement ofBoiler Evaporator Tube (Misumi Power Station)
We make every effort to maintain andimprove stable supply and reliability throughinspection and repairs of thermal equipment.
C o a l a r r i v i n g o n f re i g h t e r s i s s t o re d
i n c o a l s i l o s ( c o a l s t o r a g e t o w e r s ) .
T h e s t o re d c o a l i s
t ranspor ted to coal
pulverizers by conveyor
belts where it is crushed
into powder and then
burned in the boiler. Coal Silos (Coal Storage Towers)
Measures forPreventing Severe Accidents(Voluntary Safety Measures)
To ensure that a failure of single piece of equipment will not escalate into damage to the reactor cores
Reinforcedor
NewlyIntroduced
Reinforced
Previous Regulatory Requirements New Regulatory Requirements
Unit 3 Area Seawall Water-tight Doors in a Building Exterior Water-tight Door in Building
Learning from the lessons from the accident at the Tokyo Electric Power Company’sFukushima Daiichi Nuclear Power Station, we are implementing new regulation standardsbased on more severe scenarios.
We actively disclose information, aiming fornuclear power stations that are trusted.
To adopt multilayered safety measures, however, when designing each safety measure, ensure that the purpose can be achieved with the relevant measure without relying on other measures.
*1 Defense-in-depth:
Water that flows into the building because of water leaks from damage of devices and piping in the power station buildings or activation of fire extinguishing equipment.
*2 Interior Overflowing:
Phenomenon in which nuclear reactor is subject to serious damage.
*3 Severe Accident:
Standards for preventing severe accidents.*4 Design Basis: EnerGia Nuclear Power Information Corner (at Shimane Nuclear Power Exhibition Hall)
1413
Severe A
cciden
t Measu
resD
esign
Basis*
4
Reviewed
NewlyIntroduced
NewlyIntroduced
Seawall Height of 15 mAbove Sea Level asTsunami Countermeasure
Nuclear Power GenerationCreative
Power Nuclear Power GenerationCreativePower
Structure of Nuclear Power Generation (boiling-water reactor)
Channel Box
Lower Tie Plate
Water Rod
Part Long Fuel Rod
Spacer
Standard Fuel Rod
Upper Tie Plate Upper End Plug
Plenum
Plenum Springs
Pellet
Cladding Tube
Lower End Plug
Water Rod
approx. 1 cm
approx.1 cm
ControlRodPlate
CoolingHole
Roller
NeutronAbsorptionRod
FallingSpeedLimiter
ap
prox. 4.5 m
Reactor PressureVessel Lid
Reactor PressureVessel
Steam-waterSeparator
Supply WaterNozzle
Upper GridPlate
Shroud
ControlRod
Core SupportPlate
RecirculationWater Drainage
Nozzle
Drive Mechanismfor Control Rods
FuelAssembly
SteamDryer
CoreSpray
In-coreNeutronMonitor
JetPump
RecirculationWater InletNozzle
Control RodGuide Tube
Support Skirtfor ReactorPressureVessel
Steam OutletNozzle
Channel Fastener
ExpansionSprings
Plenum Springs
Fuel Cladding Tube
Pellet
Control Rod6Fuel Rod4Fuel Assembly3Reactor Pressure Vessel2
When pressure inside the reactor
container or the pressure vessel rises
due to the action of the steam and
other factors in the water tank in the
lower portion of the reactor container,
the pressure control chamber lowers
the pressure by channeling steam
into the chamber and cooling it. Also,
it is used as a source of water to
cool the reactor in the event of an
emergency.
Pressure Control Chamber11The condenser cools the steam after the
turbine has finished rotating, returning it
back again to its water state. By passing
seawater acting as coolant through the
30,000 to 40,000 narrow tubes inside the
condenser, steam can be cooled very
efficiently.
Condenser9
This is a pump to circulate coolant inside
the reactor and cool the fuel. Also, it can
adjust the output of the reactor by fine
tun ing the amount o f flow f rom the
recirculation pump.
Nuclear ReactorCirculation Pump
10
Control rods contain material (boric acid or hafnium) which
easily absorbs neutrons. The number of neutrons in the
nuclear reactor can be controlled by taking in and out the
control rods inside the fuel assembly, enabling them to
function to adjust the output of the reactor. When a nuclear
reactor has to be stopped in an emergency, all the control
rods are inserted at once, stopping the fission chain
reaction and shutting down the reactor.
Control Rod6
The turbine rotates by the power of the steam created from
the boiling process in the reactor. This causes the generator
connected to the turbine to rotate, creating electricity.
The mechanism by which steam is used to generate electricity
is the same as that for thermal power generation.
Turbine 7 Generator8
Building on the experience nurtured to date through the construction, operation and maintenance of power stations with conventional
Boiling Water Reactors (BWR), the ABWR is the culmination of technology developed by the government, manufacturers, and electric
power companies to achieve a higher degree of safety and reliability.
Features of the Advanced Boiling Water Reactor (ABWR) at the ShimaneNuclear Power Station Unit 3 and to be adopted by the Kaminoseki Nuclear Power Station
When neutrons come into contact with uranium 235, “nuclear fission” occurs, producing a massive amount of energy and new neutrons.
Once fission commences, neutrons come into continuous contact with the uranium 235, and fission occurs continuously (chain reaction).
Inside the reactor, uranium 238 absorbs over 90% of the neutrons in the control rods and fuel and acts to regulate the chain reaction of
the fission.
Mechanism for Nuclear Fission and Control
Approx.1 Trillionth of1 cm
Approx.100 Millionth of1 cm
Neutrons
Protons
Electrons
Mechanism forNuclear Fission andControl
Structure of an Atom
Main Features
Uranium 235
Uranium 238
Neutron
Absorbs NeutronsFission
Absorbs NeutronsFission
Fission
Heat
Heat
Heat
ControlRod Uranium 238（95 to 97％）
Absorbs Neutrons
Uranium 235（3 to 5％）
Nuclear Reactor Building
Uranium Fuel Reactor PressureVessel
Ferro-concreteReactor Container
Control RodDriveMechanism
Steam
to T
urb
ine
from
Co
nd
en
se
r
2
3
Recirculation Pump Installed in Nuclear Reactor1
Further enhances safety by eliminating the large-diameter pipes used to circulate water inside the reactor.
Houses the reactor recirculation pump inside the reactor pressure vessel1
Under normal operation, the drive power for the control rod is electric. The drive power for emergency shutdown is water pressure, and safety and reliability are improved through the auxiliary support of an electric motor.
Multiplexes the power source for the control rod drive mechanisminto water pressure and electric drive
2
By integrating the reactor container with the power station building, the entire center of gravity is lowered, further enhancing earthquake-resistance.
Adoption of ferro-concrete reactor container 3
1
2
6
CondenserCondenser9
Pump
SluiceGate
Drain
Water Supply Pump
Reactor Container
FuelAssembly
11Pressure Control Chamber
5 Pellet
Water Water
Reactor PressureVessel
10Nuclear ReactorCirculation Pump
Water
Water
7 8Turbine Generator
Control Rod
Steam
Steam Dryer
Steam-Water Separator
Condenser and Coolant(sea water)
Nuclear Reactor Building
Turbine Building
3
1615
A steel vessel which encloses the
main nuclear reactor components, it
is covered w i t h t h i c k c o n c re t e
cladding and functions to confine
radioactive material in the unlikely
event of an accident.
Reactor Container1
Capab le o f w i t hs tand ing h igh
pressure, this is a steel vessel that
stops radioactive mater ia l f rom
leaking to the outside.
Reactor Pressure Vessel2
The fuel assembly is the
component enclosed in an
alloy tube called a channel
box which contains bundles of
fuel rods. Each fuel assembly
used in the current Shimane
N u c l e a r P o w e r S t a t i o n
basically comprises 9 fuel
rods held vertically and 9
horizontally inside a channel
box.
Fuel Assembly3
Uranium 235 makes up only about 0.7% of the uranium found in
nature. The remaining 99.3% is uranium 238 which is difficult to split.
To be utilized as fuel, it uses “low-enriched uranium dioxide” with a
3% to 5% concentration of uranium 235. This is baked into the shape
of approximately 1cm pellets with a diameter of approximately 1cm.
Within its cladding are about 350 airtight pellets and this is called a
fuel rod.
Fuel Rod4
The loaded uranium fuel can be used for about 4 to 5 years. One
pellet can provide an ordinary household with enough electric
power for approximately 8 months.
Pellet5
Pressure control chamberPressure Control Chamber
Nuclear Power GenerationCreative
Power Nuclear Power GenerationCreativePower
Conceptual Drawing of Geihoku Power Station Facilities (Cross-section diagram)
We take measures to utilize hydropower effectively.
Used by waterwheels to grind grain into flour and spin fabric, water power is a familiar
source of energy that has supported our lives since long ago. Chugoku Electric Power
has used hydro power generation for decades. Many power stations and dams of
historical significance are still operating today. Among them are a large number which
have high historical, artistic, academic value and are “tangible cultural properties”
registered with the government.
Oldest HydroelectricPower Station in
Okayama PrefectureThe terrain of the northern part of Okayama
Prefecture is well suited for hydroelectric
power generation and many hydroelectric
power stations were constructed from the late
Meiji Period (late 1900s) to the early Showa
Period (late 1920s). Iri Power Station is the
oldest hydroelectric power station surviving in
Okayama Prefecture. The main building of the
power stat ion is made of a very simple
no-frills construction. Maintaining the same
appearance for over 90 years since it first
began generating electricity, it is one of the
rarest power stations of its type in the entire
country.
Iri Power StationPower generation started in 1920Yoshii River of the Yoshiigawa River System /1,600 kW max. outputKagamino-cho, Tomata-gun, Okayama Prefecture
Power station withwestern-style architecture
reminiscent of a small chapelThe Hikimi Power Station started operating
in July 1928. Situated in an area of heavy snowfall
in the westernmost corner of Japan, the Hikimi
River basin began developing hydroelectric
power generation at an early stage due to its
abundant amounts of water and its steep terrain.
Its main building encapsulates western-style
architectural design reminiscent of a small
chapel. Along with the Toyokawa Power
Station built in the same year, it is considered
to be a historically significant structure
representative of modernization-related
heri tages in the mountainous region of
Shimane Prefecture.
Hikimi Power StationPower generation started in 1928Hikimi River in the Takatsugawa River System /2,000 kW max. outputHikimi-cho, Masuda-shi, Shimane Prefecture
Regulating reservoir built witha buttress construction rare
in the country.Located near Okutsu Hot Springs, known as
a “hot spring of beauty,” the Okutsu Power
Stat ion began operat ions in 1932. The
following year, a regulating reservoir with a
buttress construction (explained on P20) was
built part way along the waterway in order to
regulate the output in response to demand for
electric power. At one time there was talk of
demolishing the regulating reservoir, but it
was retained so it could maintain its maximum
output, and today it appears almost exactly
as it was when it was first built.
Okutsu Power StationPower generation started in 1932Yoshii River of the Yoshiigawa River System /7,400 kW max. outputKagamino-cho, Tomata-gun, Okayama Prefecture
Detailed information and information about other historical electric power heritages are available on Chugoku Electric Power’s website.
* Flood discharge gate: Equipment installed at the top of the dam to open/close or adjust the flow when discharging water in the event of a flood. Osagawa Flood-control Channel (already done)Geihoku Power Station Pipeline (newly introduced)
http://www.energia.co.jp/isan/index.html
Hydropower is a renewable natural energy, and is effective for
preventing global warming as it does not emit CO2 during operations.
Chugoku Electric constructed the Geihoku Power Station (430 kW,
Yamagata County, Hiroshima Prefecture) and began commercial
operation in March 2016. This is our 99th hydroelectric power
station and it utilizes the unused difference in height to generate
electricity.
We are also systematically servicing our existing facilities.
Currently, we are replacing the flood discharge gates* at the Kobo
Dam (height 69.4 m, Shobara City, Hiroshima Prefecture) of our
Kannose Power Station (20 MW, Miyoshi City, Hiroshima Prefec-
ture) which has been in operation for over 70 years.
Electricity can be generated by blocking and intaking water from a large dam or
small diversion weir and utilizing the power of the flow of that water to turn a hydro turbine.
Used since long ago, hydropower is a recyclable natural source of energy that does not
release CO2 when generating electricity. As we continue to use this precious water resource
into the future, we will also take measures to use it more efficiently.
1817
Creating electricity
using recyclable
resources.
HydroelectricPower Generation
from the Viewpoint of aRegistered Tangible Cultural Property
History of HydroelectricPower Generation
Unused HeightDifference
Osagawa RiverDiversion Dam
Takiyama River
OdomariDam
Sluice Gate,Water Tank
GeihokuPower Station
Hydroelectric Power GenerationCreativePower
Mechanism of Hydroelectric Power Generation Types of Hydroelectric Power Stations
Dam Types
Gravity DamThis is a dam which maintains
water pressure through the
weight of the concrete. Viewed
from the side, it appears as a
triangle and is the most prevalent
in terms of number among all
concrete dams.
Fill DamThis is a col lect ive term for
dams built up with materials
such as rock, gravel, and soil.
There is an earth dam made
entirely of soil and also a rock-fill
dam built with rock, soil, and
similar materials.
Arch DamV i e w e d f r o m a b o v e , i t i s
bow-shaped. It maintains water
pressure by not only conveying
water pressure built up in the dam
to the bedrock below, but also by
transmitting it to the bedrock on
either side of the valley.
Buttress DamThis is a dam which maintains
water pressure by means of
thick walls that block water with
buttresses supporting them from
behind.
Penstock
Hydroelectric Power Station
Transformer4
Generator3
HydroTurbine2
Reservoir
Drain
Dam
TransmissionLines
Surge TankSluice Gate1
Headrace Channel
2019
The water used by a hydroelectric power
station is brought in through a sluice gate,
and then passes through a headrace channel
and penstock on its way to be used to turn
the water turbine. The surge tank is a facility
to adjust the amount of water flowing
through the headrace channel and the
water used by the power station.
Sluice Gate, Headrace Channel, Surge Tank, Penstock1Water flowing at high speed and pressure
through the penstock rotates the hydro
turbine with great force. The amount
of flowing water is regulated by a governor
in order to constantly maintain the rpm of
the water turbine at a set rate, enabling
electricity to be generated at a stable
frequency.
Hydro Turbine2
Sluice Gate Hydro Turbine
The rotation of the hydro turbine is conveyed
to the generator which is connected to the
hydro turbine by the same axis, thus
generating electricity. The amount of electricity
generated is determined by volume of water
and the difference in height from the water’s
surface in the drainage ditch to the surface
of the water in the dam.
Generator3A l t h o u g h t h e n u m b e r o f ro t a t i o n s
depends on the model, the voltage of the
electricity produced by generators that
revolve at 100 rpm to 1,200 rpm is 200 V
to 20,000 V. The electricity is stepped
up to a maximum of 220 kV by the power
transformer and then transmitted.
Transformer4
Generator Rotor Transformer
This is a method of power generation where an upper reservoir and
lower reservoir are built. During the night when electricity consumption
is low, water is pumped up from the lower reservoir to the upper one,
and when electricity consumption is high during the day, it is released
from the upper reservoir to the lower one. It acts as a storage battery by
being able to store electricity in the form of water.
This method of power generation combines the dam-type and
conduit-type. Electric power is generated by means of the combined
differences in height created by the dam and the one achieved
with the conduit. As with the dam-type power station, this method is
able to adjust output in accordance with the required volume of electric
power generated since it utilizes the water stored in the dam.
Dam and Conduit-type Power Station Pumped Storage-type Power Station
This is a method of electric power generation by which a dam is built on
a narrow river with high rock cliffs on either bank, and then water is
stored in the dam and electricity is generated with the difference in height.
Since this method utilizes water stored in a dam, it has the advantage of
being able to adjust output in accordance with the required volume of
electric power generated.
This is a method for generating electricity which involves building a
diversion weir upstream in a river. Then water is channeled downstream
through a gently sloping conduit, creating a difference in height with the
river and generating electricity.
Conduit-type Power Station Dam-type Power Station
DiversionWeir
Sluice GateHeadrace
Channel Water Tank
Spillway
Penstock
PowerStation
Drain
SedimentationBasin
River
DrainageDitch Drain
Sluice Gate
Reservoir
Dam
Penstock
Reservoir
Dam
Penstock
HeadraceChannel
SluiceGate
SurgeTank
PowerStation
DrainageDitch Drain
(UpperReservoir)
(UpperReservoir)
PumpingUp
PowerGeneration Trans-
missionLines
PowerReceiving
(LowerReservoir)
(LowerReservoir)
Hydroelectric Power GenerationCreative
Power Hydroelectric Power GenerationCreativePower
PowerStation
Photovoltaics, wind power, woody biomass, and similar types of
energy sources are forms of renewable energy which can be
used over and over again without running out.
For Japan, which lacks energy resources, these are valuable sources of
domestic energy which do not release CO2 when generating power.
We are actively conducting research and technical development in order to
maximize the possibi l i t ies which renewable energy of fers .
Creating electricity
using inexhaustible
supplies of energy
which contain so many
possibilities.
NAS Battery: 4.2 MW
Lithium-ion Battery: 2 MW
Hybrid StorageBattery System (6.2 MW)
NishinoshimaSubstation
Biomass is an organic material that plants generate with photo-
synthesis of inorganic water and CO2, and thus it is a sustainable
renewable energy made from living organisms and solar energy.
Chugoku Electric started generation using coal and woody
biomass as mixed-fuel at the Shin-Onoda Power Station in August 2007.
In fiscal 2010, we started the Forest Residue Biomass+Coal
Mixed-Fuel Power Generation Verification Project, subsidized by
the Ministry of Economy, Trade and Industry at the Shin-Onoda
Power Station and Misumi Power Station. We then commenced
full-fledged operation from fiscal 2014. In fiscal 2016, approximately
39,000 tons of woody biomass was used for mixed-fuel power
generation, and CO2 emissions were reduced by roughly 28,000 tons.
In addition, we established AIR WATER & ENERGIA POWER
YAMAGUCHI CORPORATION. jointly with Air Water Inc. in February
2015, constructing an approximately 100 MW biomass with coal
mixed-fuel power station. Along furthering the widespread use of
renewable energy, this can also contribute to promoting the
region by effectively using forest resources in Yamaguchi Prefecture.
On the Oki Islands the scale of the power grid is small. In order to
introduce large amounts of renewable energy (photovoltaic or
wind power) whose output fluctuates due to weather and other
factors, it is necessary to have countermeasures in place to
respond to fluctuating output as these have a tremendous effect.
Chugoku Electric was selected for the Ministry of Environment’s
subsidized project* to further introduce and expand the use of
renewable energy in the Oki Islands. In September 2015 we
constructed a hybrid storage battery system (output: 6.2 MW) that
combines two types of storage batteries with different special
characteristics. In addition, we are conducting technical verification
with regard to techniques for efficient management and control of
discharging and charging the batteries, along with expanding
renewable energy capacity by about 8 MW.
The technical verification conducted through the hybrid storage
battery system, which combines NAS (sodium-sulfur) and Lithium
ion batteries, is the first such innovative program in Japan.
In December 2011, Chugoku Electric started operation of the
Fukuyama Photovoltaic Power Station (3 MW), our first use of
mega solar power generation. We started operations at the
second power station, Ube Photovoltaic Power Station (3 MW) in
Ube City, Yamaguchi Prefecture in December, 2014.
Furthermore, we established the “Hiroshima Renewable Energy
Promotion Limited Liability Business Partnership” jointly with
Hiroshima Prefecture and our group company, Energia Solution &
Service Company, Incorporated (ESS), setting up a mega solar
business to return profits to the community. This was the first
mega solar business co-operated by a local government and an
electric power company in Japan. We are able to contribute to the
local community while at the same time promoting the introduction of
renewable energy by using the returning profits from the power
generation business to the community.
We are promoting mixed-fuel power generationusing coal ash and woody biomass.
We are making efforts formega solar power generation.
We conducted verification of the firstdomestic hybrid storage battery system.
Outline Diagram of the Hybrid Storage Battery System Verification Project in the Oki Islands
AmaWind Power
Station (2 MW)
FormerOki AirportMega Solar
ExistingInterconnection-type
ApplicationMega Solar
(2 MW)
AdditionalPhotovoltaic
Power Generatedfor Residences
(500kW)Entire Oki Islands
Minamidani Power Station(Hydro Power) (100 kW)
Prefectural Oki Ominesan Power Station(Wind Power) (1.8 MW)
22kV Saigo Kuroki Line
Saigo PowerStation (diesel)
Yui Power Station(Hydro Power) (200 kW)
Dogo
Dozen
Kuroki PowerStation (diesel)
2221
RenewableEnergy
Ube Photovoltaic Power Station
Bringing Forest Residue Biomass into the Power Station (Misumi Power Station)
NewNew
NewNew
NewNewNewNew
(3 MW)
"Fast and Small Fluctuations"Cause of Fluctuation: Passing Clouds, etc.
Night-time Use of "Slow and Large Fluctuations(Surplus Electricity)"Cause of Fluctuation: Position of Sun, etc.
Output
Time
Increase of IntroducedRenewable Energy
CoordinatedControl
Changes inPowerDemands
Amount of PowerGenerated by ExistingRenewable Energy Source
Base Power (Diesel Generated)
Measures for "Slow and Large Fluctuations"
Large-capacity NAS Battery
Measures for"Fast and Small Fluctuations"
Small Capacity and High PowerLithium-ion Batteries
Overview of Hybrid Storage Battery System
Renewable EnergyCreativePower
From power station to customers.
We support everyday life delivering
electricity each day.
［Consumption］ ［Power Generation］Frequency (Hz)
6059.9 60.1
110 kV to 500 kV
66 kV to 110 kV
Buildings, Department StoresMid to Small-sized Factories Distribution Substation
Primary Substation RailroadsLarge Factories
200 V / 100 V
Standard Homes Stores Small Factories
6 kV
How Electricity is Delivered
Pole Transformer
2423
Electricity cannot be stored in large amounts.
Thus, when electricity is needed, the required amount must be
generated and distributed on a continuous basis so that the amount
consumed equals the amount generated.
In order to supply the lives of its residents, the generated amount and
flow of electricity are managed 24 hours a day, 365 days a year to
ensure a supply of high-quality electricity to support society and
the lives of its residents.
Renewable EnergyNuclear Power StationHydroelectric Power StationThermal Power Station
TransmissionPower
TransmissionPower
Chugoku Electric systematically services the facilities related to
the trunk line, including the transmission lines and substations*
while considering various elements such as maintenance and
improvement of supply reliability and cost-effective demand and
supply operation.
Many network facilities constructed during the period of rapid
economic growth require remodeling. While procuring remodeling
materials and equipment and ensuring stable construction labor,
we will follow the remodeling plan for such aged facilities, which
are increasing in number, and maintain reliability at those facilities.
Regarding electric substation equipment, we will replace 500 kV
breaker systems wi th new systems over the course of
approximately 35 years and plan to replace 32 units within 10
years, which we already started doing in 2014. We are also
replacing breaker systems of less than 220 kV, following our
schedule.
There are about 20,000 transmission towers now and around
4,200 of them, which were built before 1965, will also be remodeled
along with transmission lines within 30 years.
We introduced an “Automated Distribution System” and conduct
remote monitoring and control of distribution facilities, performing
switching operations for distribution lines mounted on power poles.
With this system, when there is an accident or failure with the distribution
lines, the system can detect the section where this occurred and
automatically send electricity to areas outside the affected section,
enabling us to conduct efficient restoration work.
When operating a transmission and distribution network, demand
and supply operation that controls the amount of power generated
according to the amount of electricity consumed and system
operation that controls the flow of electricity and voltage are used
to provide our customers with stable electricity.
Electricity losses occur when the electricity generated at the
power station is delivered to our customers over transmission and
distribution lines. By reducing these losses, we can suppress
surplus power generation and reduce CO2 emissions.
To reduce this transmission and distribution loss rate, Chugoku
Electric has been advancing high-voltage transmission and distribution
lines by expanding our 500 kV transmission line and 20 kV distribution
line network.
For further loss reductions, we are increasing the use of low-loss
power lines and equipment and adopting power system-planning
support systems that will help us reduce losses of 6 kV distribution
lines.
Across Japan, there are 9 areas connected through transmission
lines. When an impending shortage of electricity is predicted, such
as when supply and/or demand is constrained, negotiations for
electricity are conducted according to instructions from the Organization
for Cross-regional Coordination of Transmission Operators
(a cross-regional organization). This results in a stable supply of
electricity nationwide.
Automated Distribution System
The Central Load DispatchingCenter functions as the control tower,managing the generation anddistribution of electric power.
We upgrade our network facilities. We take measures to reduce loss ofelectricity when it is transmitted.
Trunk line maintenance is proceedingin a planned manner and we are workinghard to enhance reliability and economicperformance.
Conducting wide-area management ofelectric power.
Electricity distribution facilities aremonitored and controlledusing distribution automation systems.
A power generation plan is created based on predictions of electric
power usage which fluctuates moment by moment according to
social trends and meteorological changes (weather, temperature).
Electricity is generated economically and efficiently while securing
a stable supply.
Demand and supply operation
Chugoku Electric delivers stable electricity by switching the electricity
transmission route during normal use as well as when inspecting
our electricity facilities.
Weather radars and a lightning position location system are monitored
to quickly sense changes in the weather such as lightning. We
respond by changing electricity transmission routes ahead of time
to prevent any effect to our customers.
Detailed adjustments are also performed to maintain the voltage,
which changes constantly according to electricity usage amount,
at a proper level.
System operation
Remodeling Transmission Tower for San-in Trunk Line (Right one is already done)
Assembling the Shin-KurashikiConnecting Line Transmission Tower
Shin-Okayama Substation with Newly AddedTransformer
12
10
8
6
4
2
0
（％）
（ fiscal year）61
11.5
6.85.8 6.1 5.7
5.1 5.0 5.3 5.2 5.1
71 81 91 01 12 13 14 15 16
Since 1986, we have been laying power cables underground with
the aim of “securing safe and pleasant passageways” and
“enhancing urban scenery.”
In recent years, we have been laying the cables underground
based on a cooperative system of three entities functioning as one,
involving road administrators,
power cable administrators,
and concerned local parties
so as to be able to meet
social demands, such as
those to “preserve historical
townscapes” and “promote
tourism.”
We promote the use of undergrounddistribution lines in an effort toenhance the scenery.
Frequency Differences by Region
50 Hz
60 HzTransition of Transmission and Distribution Loss Rate
* Substation: Facility that transforms the voltage of the electricity sent from the power stations with a transformer and then sends the electricity to a different transmission or distribution line. A substation is equipped with a transformer as well as a breaker system to shut off electricity in the event of an accident or trouble.
East Japan and West Japan OperateUnder Different FrequenciesSince the Meiji Period when the country first introduced electricity, electrical frequency differed according to the region: East Japan adopted 50Hz and West Japan 60Hz. As a result, when electric power is traded between East and West, the frequency is converted at three frequency-converter stations to achieve a stable supply of electricity.
The multipurpose underground utility conduit is a concrete underground
tunnel running below roads which was dug in order to consolidate
lifelines indispensable for daily life, including electricity, gas,
telephone, and water and sewer services. The distinct advantage of
this section is that it ensures maintenance can be conducted without
having to dig up the road again.
We support electric power consumptionin urban areas through the use ofunderground power grids.
220 kV Underground Transmission Line(Underground Tunnel for Hiroshima Central Line)
Multipurpose Underground UtilityConduit
Cross Section Example of Multipurpose Underground Utility Conduit
2625
approx. 2.5 m2.75 m
Transmissionlines
Gas
Distributionlines
Telephone
6.15 m
“Shinmon Dori” Main Promenade atIzumo Taisha Entrance After DistributionCables Were Laid Underground
Transmission and DistributionTransmission
Power Transmission and DistributionTransmissionPower
Mechanism of Substation
A Substation Adjusts Voltages and Sends Electricity Efficiently.
By constructing substationsunderground, above -ground land can beutilized more effectively.
With the improvement in living standards and urban development, demand for
electric power in large cities has grown steadily, necessitating the expansion of
existing substations and construction of new ones in the center of cities in
order to achieve a stable supply of electric power. However, it is difficult to
secure land required for this in cities, and recently there have been cases of
substations being constructed underground.
Lightning Conductor（Overhead Ground Wire）
Breaker
Disconnector
Disconnector
LightningC
onductor
4 Instrument
Transformer
4Transformer
12 Breaker
2 Breaker
2 Breaker
23 3 Disconnector
3 Disconnector
3 Disconnector
3 Disconnector
35
Overhead Ground Wire
High-voltageStep-down Line
High-voltage Line (6,000V 3-phase, 3-line type)
Low-voltage Step-up Line
Low-voltage Step-down Line
Cross-arm forLead-in Wire
Ground
Electric LightLead-in Wire
Customer
High-voltageCutout
Transmission lines are supported by high steel towers and other structures. They play the role of sending massive amounts of electricity by
connecting power stations and substations, as well as substations to other ones.
One of the properties of electricity is that it can dissipate into the open air by becoming heat through the resistance of the transmission line. It is
necessary to send high-voltages in order to reduce loss of electricity.
We have 500 kV, 220 kV, and 110 kV transmission lines sending electricity between power stations and primary substations.
We also have 66 kV and other types of transmission lines which send electricity which has undergone step-down transformation at the primary
substations to large factories, railways, and distribution substations.
In order to be able to cope with the demand for electric power in the Chugoku Region and interchange power beyond the area, we have installed
two routes of 500 kV transmission lines, one on the San-yo side and the other on the San-in side, achieving a comprehensive transmission network.
The electric power generated at a power station is
delivered to customers through transmission lines and
substations. The power lines that connect the last
substation (distribution substation) to customers’ houses,
offices, factories, and other locations are called distribution
lines.
Among the various distribution lines, there are special
Power Line Example (500 kV) Transmission Tower Example (500 kV)
Arching Horn
Insulator
Steel Tower
Example of an Ordinary Distribution Pole (6,000 V)
Switchgear Room for Underground Substation (Hiroshima Central Substation)
保護ヒューズSafetyFuse
Aluminum line
Steel line
Aluminum lines: Steel lines: Mass per unit:
54/3.8 mm7/3.8 mm7/3.8 mm
34.2 mm
Low-voltage Light Line (100 V/200 V Single-phase 3-line type)
1
Pole Transformer2
3
3-phase 4-line type for joint usage of low-voltage lights and low-voltage power.｛(lights) 100 V / 200 V / (power) 200 V｝
Equipment with a fuse inside to cut off electricity on the high-voltage side of a transformer.
Low-voltage Light Line1
Standard capacity is 5-100 kVA.Pole Transformer 2
High-voltage Cutout 3
Increasing the voltage of transmission and distribution lines reduces electricity
loss. A substation increases the voltage of the electricity generated at a power
station and sends it out. Then, by decreasing the voltage near where the electric-
ity is to be consumed, electricity is delivered efficiently to customers.
Raising or Lowering Transmission and Distribution Line Voltage
A substation has various equipment installed to adjust the voltage, because it is
necessary to maintain the voltage of the electricity at the location where it is used
within a prescribed range at all times.
Adjusting Voltage of Transmission and Distribution Lines
When a failure occurs on a transmission and distribution line, the line affected
must be quickly cut off from the electric power system. For this, a substation has
protective relays to swiftly detect a transmission and distribution line failure and
dispatch signals to cut off electric power at the location of the failure. It also has
breakers to receive the signals and cut the transmission and distribution line off
from the electric power system.
Protecting Transmission and Distribution Lines
In order to transmit the generated electricity efficiently and in a
stable manner, the breaker must be open and closed in
conjunction with the suspension of power station operations in
order to regulate the way in which the electric power flows.
Controlling the Flow of Electricity
Distribution Substation (Yae Substation)
2827
Equipment for transforming voltage.Transformer1
Equipment to cut electric power when there is an accident or failure, and when transmitting or suspending electric power.
Breaker2
Equipment to disconnect electrical circuits when repairing or inspecting transmission and distribution lines, and equipment such as power transformers and breakers.
Disconnector3
Equipment (current transformers, voltage transformers) to transform high voltage, large electric currents used to measure system voltage and currents into low-voltage, small electric currents.
Instrument Transformer4
Lightning Conductor5
Device to regulate abnormal voltage during lightning storms in order to protect equipment at substations.
TransmissionLines
TransmissionLines
Instrument
Transformer
Transmission and DistributionTransmission
Power Transmission and DistributionTransmissionPower
Basic Policy
Taking the opportunity of the full liberalization of retail electric power sales, in December
2015 we formulated the “Chugoku Electric Group Environmental Action Plan” and are
conducting related activities. This is to strengthen our Group’s involvement as a whole in
the environmental field as it grows increasingly important to reinforce collaboration among
Group companies.
Chugoku Electric Group Environmental Action Plan
●Contribute to realizing a society that enables sustainable development through simultaneously achieving compatibility with the environment, stable supply of power, and profitability.
●Always cherish the environment based on the following three policies and aim to be a corporate group trusted by our customers.
Chugoku Electric Group will:
Action Plan
Vigorously approach global warming countermeasures and other important issues such as promoting formation of a recycling-oriented society and promoting local environmental conservation.
1
Contribute to building a society in harmony with the environment by providing customers with products and services that are environmentally friendly.
2
Actively implement two-way communications with local communities comprising dialog, activities, and other efforts related to environmental conservation.
3
Promotion of global warmingcountermeasures
1
Promotion of the formation ofa recycling-oriented society
2
Promotion oflocal environmental conservation
3
A more abundant and
comfortable life with electricity.Electricity is something we “take for granted” in our lives.
Chugoku Electric wishes to deliver electricity for the daily lives
of our customers as reliably as possible.
To make their lives more comfortable, we are always thinking about what
services we can offer. What we can do to aid community development.
Listen to our customers... get closer to local communities... and
continue to think about the future of our customers and the community.
3029
Promotion ofenvironmental communication
5
Implementation ofenvironmental management
6
Dissemination andencouragement of energy saving
4
CompassionPower
CompassionPower
Every year Chugoku Electric receives approximately 20,000 comments.
We wish to respond their wide range of opinions and consultations
in an up-front manner with sincerity and honesty.
We will respond flexibly to increasingly diversified lifestyles and
offer services which earn the trust of our customers and keep them satisfied.
Moving into the future, we will devote all our energies to being of use to people
from the viewpoint of our customers.
We have introduced rate plans under the concept of “Gutto Zutto. EnerGia.”
With the full liberalization of retail electric power sales
starting in April 2016, we have implemented new rate
plans for our household customers.
The aim is to create new value and grow together
with local communities so we can live up to the
expectations of our customers, as we endeavor to
have customers choose our company over the others.
In April 2016, Chugoku Electric began sales of electricity to households in the metropolitan area*.
While continuing to operate with the Chugoku Region as our hub, we aim to be a corporate
group that “is chosen by communities and grows beyond communities” by starting new
business activities in the Tokyo metropolitan area.
Sales of Electricityin Tokyo MetropolitanArea
Our website for the “Gutto Zutto. Club”
functions as a membership site where our
customers can view their energy consumption
and charges, use a rate simulator to learn
what happens when they change their rate
plan, and take procedures to enter into
various contracts. The “Gutto Zutto. Plan”
new rate plans and point system can be
accessed by becoming a member of the
club.
● Confirmation of Contract Details
● Changing Rate Plans
● Procedures to Cancel Your Electric Power Service
● Procedures to Start Your Electric Power Service
● Confirmation of “Notification of Energy Consumption”
● Confirmation of Previous Electricity Charges and Energy Consumption
● Trial Calculations for Rate Plans
● Changing Payment Method
● Confirmation of Status of Application Procedures
List of Convenient Services and Procedures
We are expanding our range of services in stages.
Detailed information is available on our website. http://www.energia-support.com/Gutto Zutto Search
Always thinking
about helping our
customers to enjoy
the comfortable
and satisfying lives.
3231
“EnerGia Point Service”
This is a point system closely linked to the local area which enables customers
to exchange the points they have earned through electricity usage and
various website services for specialty products of the Chugoku Region,
product coupons, and other rewards.
“Gutto Zutto. Plan”
We have economical and easy-to-use rate
plans which customers can select in
accordance with their lifestyle in terms of
energy consumption and times.
“Collaboration Menu”
With our “EnerGia Point Service” menu,
customers can exchange the EnerGia
Points they earned for products and
services offered by partner companies
operating in the Chugoku Region. In
addition, they can take advantage of
additional points, drawings, and other
benefits only available to members.
Pointsbuild up
before you know it!
Earnpoints onyour ownevery day!
Points accumulatebased on monthly
electricitycharges.
Earn more pointsby participating
in ourcontents.
A greatrange ofproducts
you can get!
Earned points can beexchanged for
local products andservices.
CustomerServices
“Gutto” (Impact)
We are proud to provide impactful money-saving r a t e s a n d c o n v e n i e n t services.
“Zutto” (Always)
We always want to remain close to our community and deliver a worry-free life with electricity.
Customer ServicesCompassionPower
Each year, Chugoku Electric holds a general disaster prevention
drill assuming that a natural disaster has caused a large-scale
power ou tage. We
verify that information is
relayed and restoration
work is sa fe ly and
swi f t l y car r ied ou t
a c c o r d i n g t o t h e
disaster prevention
work plan and various
manuals.
Our Okayama and Hiroshima Customer Centers are places where
customers can consult, make inquiries, and request start and
discontinuance of electricity services when they move home or in
other situations. These Customer Centers represent enhancements
of our customer services, enabling us to field customers’ inquiries
speedily, determine and analyze their needs accurately, reflect
such needs promptly in our work, services, and so forth.
Outline of the Customer Centers
Center Area Served (Prefecture)
Tottori, Shimane, Okayama, plus portions of Hyogo andKagawa
OkayamaCustomer Center
Hiroshima, Yamaguchi, plus portions of EhimeHiroshimaCustomer Center
Chugoku Electric concluded a partnership agreement for natural
disaster with the Middle Army of Japan Ground Self-Defense
Force and the Kure District headquarters of Japan Maritime Self-
Defense Force in 2014 so that we can smoothly and promptly
cooperate together in case of various disasters, including earth-
quake and typhoon.
By this agreement, mutual requests in the event of disaster will
allow the Self-Defense Forces to support us in securing roadways
and transporting labor, material and equipment for restoration*. The
Self-Defense Forces will have our support in supplying power to
their operating base and letting them use our facilities/land within a
scope that does not adversely affect our own responsibilities.
With regard to operations planning for disaster prevention, we
cooperate with other electric power companies, cooperative companies,
Organization for Cross-regional Coordination of Transmission
Operators, and other entities to maintain systems for mutual
response in times of extraordinary disasters, such as mutual coordination
of electric power, workers, materials and similar resources.
When the Hiroshima landslides occurred in August 2014, we proceeded
with a recovery policy in concert with local governments and the
Self Defense Forces to resolve all power outages. In addition,
we provided support for restoration work to cope with disasters
brought about by the earthquake that centered in Kumamoto
Prefecture in April 2016.
We strive to keep cus-
tomers informed about
outages, l inking with
local governments and
Self Defense Forces to
provide information to
local governments on a
continuous basis about
t h e s t a t u s o f t h e
outages, restorat ion
estimations, and other
aspects.
We respond to inquiries and requestsfrom our customers quickly andappropriately.
To achieve smooth mutual support between service offices, we have
equipped about 1,100 cars with car navigation systems with a utility
pole position search function to guide patrol and repair vehicles
to the correct destination.
We have also adopted a
s y s t e m t h a t s u p p o r t s
disaster restorat ion by
using cellular phones to
send data on equipment
damage and progress of
patro ls to a system for
automatic registration.
We are conducting efficient repair supportwork using electric power pole searchingand portable data transmission systems.
We forge relationships with the Self-DefenseForces and other power companies in orderto be able to respond quickly to disasters.
We conduct general disasterprevention drills in anticipation oflarge-scale power outages.
* When our company gets cooperation from the Self-Defense Forces, the governor must make a request for the Self-Defense Forces’ disaster dispatch.
Information on power outages inthe Chugoku Electric service area isavailable on our website.
Our "Energy Diagnosis Service" is targeted at our corporate
customers. System energy consumption is measured and investi-
gated using our original energy diagnosis tools, and we will
propose methods to improve operation of the equipment.
Chugoku Electric actively proposes a variety of measures for
effective use of energy in all areas of our customers’ business
from air conditioning to hot water supply. We also propose highly
efficient systems for heat demands in the manufacturing
processes of our industrial customers.
We provide recommendations toour corporate customerson effective ways to use energy.
Energy Diagnosis Service
In accordance with statutory replacement schedules, Chugoku
Electric began installing smart meters in October 2015, and will
install them in every customer location with low-voltage
contracts (approximately 5 million units) within our company’s
service area, over about 9 years to the end of fiscal 2024. Also,
along with the full liberalization of retail electric power sales
and the start of various services, we will install smart meters for
customers who signed contracts which require the use of
smart meters.
We began using the smart meter functions in April 2016, and
started offering information transmission services, such as
launching our “Gutto Zutto. Club” membership website where
customers can view their energy consumption. We have also
introduced home energy management systems (HEMS) for
power meters.
Along with providing customers more effective measures for
energy and power conservation, the services have enabled
customers to select the rate plan most suited to their lifestyle.
We are introducing smart meters which is useful in conserving energy and electric power.
Services to Visualize Energy Consumption
3433
Each year the company receives some 20,000 comments including
opinions, requests and criticism. This customer feedback is
entered in our Customer Feedback System so that it can be
rapidly transmitted to the relevant departments and shared by all
employees*. By utilizing this system, many of our employees will
be aware of the customers’ feedback and recognize the customers’
expectations of our company and increase their sensitivity toward
our customers’ interests.
We strive to make use of the comments we receive from customers
to help with improvement of our operations and thus to further
raise the levels of our customer services.
* Customer feedback is shared in ways that keep personal information anonymous.
Through our “Customer Feedback System,”we reflect our customers’ opinions andrequests in the field.
* HEMS stands for "Home Energy Management System": By connecting it to home electric appliances or equipment, a customer can visually monitor the usage of electricity on a screen and can automatically control those electric appliances.
HEMS
【Customer】
Photovoltaic-powerGenerators
AirConditioners
AVDevices
Notification ofDaily EnergyConsumptionby Time Ranges
Graph displaysare scheduledto start inApril 2017.
Chugoku Electric’s Membership Website
Gutto Zutto. Club
ChugokuElectric
CommunicationSystem Device
SmartMeter
AutomatedReading
When power outages* occur, information is posted almost in real
time on our website regarding the “time of power outage,” “area
affected by power outage,” “number of affected homes,” and other details.
In addition, as soon as we confirm information on the current local
conditions surrounding the outage, we will update details about the
“status of response for restoration” and “restoration prospects.”
Furthermore, when wide-spread
and long-term power outages
due to typhoons and other natural
disasters occur, we report a
summary of the current local
conditions of each area.*Excluded are power outages in single-home units caused by problems in interior wiring or lead-in wire.
Chugoku Electric has formed a network so an alternate transmission
route can be established immediately if a disaster renders the
normal route for the transmission lines that connect the power
station and the substation, and the distribution lines that connect
the substation to our customers’ homes unusable. We also have a
system that, if the power fails in the distribution line, judges the
faulty section and automatically sends the power to other sections.
If the equipment is damaged in a natural disaster, Chugoku
Electric works quickly to assign staff according to the scale of
damage. The state of damage is quickly analyzed and staff are
selectively assigned to areas with heavy damage.
A system to predict possible damage from typhoons and snowfall
is adopted. If it is predicted
that there will be damage over
a wide range, staff standby at
the repair base so that they
can start patrols and restoration
work as soon as possible.
We maintain recovery systems throughtransmission and distribution networksand damage forecasting.
CellularPhone
Information onDamaged Equipment
Information onDamaged Equipment
Registration ofDamaged Equipment
Analysis ofDamage Scale
General Disaster Restoration System
Support System
Repair Base
Service OfficeRepair Base
Staff Dispatchment Patrol
Early Analysis of Damage State
Verification of Loading Vehicles onto the MaritimeSelf-Defense Force’s Transport Ship
Restoration Work Drill
Customer ServicesCompassion
Power Customer ServicesCompassionPower
In addition to using effectively coal ash produced from our coal-fired
thermal power stations as raw material for cement and land forming,
we make practical use of new and effective usage methods and
construction methods.
At the Misumi Power Station, we manufacture a Hi-Beads material
that uses coal ash produced by coal-fired thermal power stations
as its main ingredient. We are also engaged in developing riverbed
improvement technology that utilizes this material.
Hi-Beads have some special properties, including being able to
absorb hydrogen sulfide, the cause of bad odors, and nutrient
salts (nitrogen and phosphorous), which are the causes of red
tide and control their liquation into the water. Its outstanding
capabilities for remediating the environment have attracted attention.
In addition to being used in construction to improve weak ground,
it is also utilized as an environmental remediation material in
public-works projects, such as Otagawa River in Hiroshima
Prefecture and Fukuyama Inner Harbor and Nakaumi Lake which
spreads across Tottori and Shimane Prefectures.
The construction of facilities at the Misumi Power Station is in line
with the policies of the “3R (Reduce, Reuse, Recycle) Promotion
Subsidy Pro jects and was adopted as a 3R Promot ion
Subsidy Project for 2015.
Our Group has established a goal of increasing the recycling rate
of the waste it produces to 99% or higher in fiscal 2021.
The volume of waste we produced in fiscal 2016 was approximately
969,000 tons. Of that amount, 956,000 tons was recycled, for a
recycling rate of 98.6%. 91% of the produced waste is coal ash
and desulfurized gypsum.
Waterside Environment Restoration Project at Kyobashi River (section enclosed in red)
"Hi-Beads" Granulated Coal Ash
We are involved in efforts for zero emissionsin which we recycle the waste we generatethrough our business activities.
We have developed "CO2-SUICOM" environmentally considerate
concrete in conjunction with Kajima Corporation and Denka
Company Limited. This concrete can substantially achieve zero or
negative CO2 emissions during its manufacture, by absorbing the
CO2 produced by a thermal power station.
This CO2-SUICOM uses a special additive that has the chemical
property to cause concrete to harden upon absorbing the CO2.
This substantially reduces the CO2 emissions.
CO2-SUICOM also helps with effective utilization of industrial
waste and reduction of CO2 by using CO2 discharged from thermal
power stations to harden concrete, as well as coal ash, an industrial
waste, in place of cement.
This technology won "Minister of the Environment’s fiscal 2015
Commendation for Global Warming Prevention Activity". And
since fiscal 2015, we have been selected for the Ministry of
Economy, Technology and Industry’s public funding project
"Verification and promotion project for carbon dioxide capture and
storage (Verificat ion
S u p p o r t P ro j e c t o f
Technology for Effective
Use of Carbon Dioxide
Fixation)."
We are aiming toward large-scale reductionin CO2 through the development ofenvironmentally-friendly concrete.
Effectively using coal ash andtechnological development tohelp restore waterside environments.
・ Expanded effective utilization of coal ash for civil engineering material
・ Expanded effective utilization of construction wastes, waste plastic・ Rigorous sorting and recycling of garbage from offices
Specific Measures
Volume of Industrial Waste* Produced by EnerGia Group Companiesand Volume Recycled (fiscal 2016) （unit: ten thousands of tons）
Values are rounded off and may not add up precisely to the totals.*The waste we and our group companies generate. That waste contains components of value.
Item
IndustrialWaste
Coal Ash
Gypsum
ConstructionWaste, etc.
General Waste
Total
63.6
24.6
8.5
0.3
96.9
63.5
24.6
7.3
0.2
95.6
0.1
0.0
1.1
0.1
1.3
99.8
100.0
86.4
73.4
98.6
VolumeProduced
VolumeRecycled
VolumeDisposed of
RecyclingRate (%)
3635
Thinking about
the future of the earth.
Thinking about
the abundance
of nature close at hand.
With beautiful mountains and oceans spreading out in many directions,
the Chugoku Region features a wealth of nature.
To maintain this abundant environment, we at Chugoku Electric will continue
our steady and diligent efforts to have each and every employee become involved
in measures to prevent air pollution and reduce CO2 emissions and to maximize
whatever small effort they are able to make.
We believe that the accumulation of these efforts will lead to preserving
the environment for the entire planet.
Approach to theEnvironment
Foundation Block (indicated in red lines) for PhotovoltaicPanels Installed at Ube Photovoltaic-power Station
Approach to the EnvironmentCompassionPower
Devoting our entire energy
for regional development.
Regional development leads
to our development.
Chugoku Electric’s Corporate Philosophy indicates the company’s vision. It is composed of the company’s key concept, management philosophy and code of conduct.
Corporate Philosophy (Established in January 2016)
EnerGia stands for a"new, bright, warm and dynamic society",and signifies Chugoku Electric’s attitudetowards achieving such a society.
Key Conc e p t
We take delight in earning the trust of our customers.We create an abundant future through energy.We will grow together with the community.
M a n a g e m e nt Ph i lo s o p hy
3837
We wish to be a corporation that fulfills the expectations of
its customers and continues to grow together with them.
Striving to become “a group which is chosen by communities
and grows beyond communities,” we focus all our energies
on contributing to the sustainable development of
local communities.
With You and with the Earth
TTrust. Creation. Growth.
Collective Power
Collective Power
Development of consulting services in 27 countries.
Aiming to “Grow Together with Local Communities” through a variety of activities contributing to local communities.
We are developing our international business by drawing from our technological expertisewhich we have acquired in Japan and abroad.
The natural gas supply business is the core of our
comprehensive energy supply operations. From our two
bases at Mizushima and Yanai acting as hubs, the group
company Energia Solut ion & Service Company,
Incorporated (ESS) delivers liquefied natural gas (LNG) to
gas companies and industrial customers mainly in the
Chugoku Region.
We are expanding our business, as well as swiftly
responding to customers' needs for natural gas.
Comprehensive Energy Supply Operations
Energia Communications, Inc., our IT businesses using optical fibers and ICT
(information and communications technology) to create and provide attractive
services that match customers’ needs and expectations. "MEGA EGG" is our
internet service which allows a smooth "internet life" for
individual customers, and "EneWings" is our total ICT
solution for corporate customers.
The EnerGia Group also aims to enrich our customers’
l ives by supporting business and daily l i fe. Our
care-giving services provides at-home care and nursing
home services, while our real estate project utilizes real
estate owned by the Group to develop residential areas,
sell housing, and operate metropolitan natural hot springs
facilities. In addition, we offer printing and advertising
services and act as agents for welfare programs, as well
as provide benchmarking services for residences.
Information and Telecommunications Operationsand Business and Life Support Operations
Responding as a consolidated Group to a broad range of needs for business development.
Mizushima LNG Base Yanai Power Station
In order to meet our customers’ increasingly diverse needs, we are engaged in providing services that utilize the strengths of the Group. Such services
have our electric power business as their core and comprise our information and telecommunications operations, our business and life support operations.
We are working as a united group to provide services that help to improve convenience and comfort for customers.We took part in a coal-fired thermal power generation project in Malaysia, one of our growth businesses overseas.
In March 2016, we participated in a coal-fired thermal power generation project in Malaysia as part of our business expansion abroad.
Through our knowledge and experience accumulated from constructing, managing and operating of coal-fired power stations, we will contribute to
achieving a stable supply of electricity and low-carbon society in Malaysia.
Given that half of the global electric power demand is
predicted to lie in Asia in the future, we established our
first representative office in Singapore in July 2016 as an
overseas base.
The function of the representative office is to conduct research
in electric power generation markets, mainly in Asia.
Establishment of ourSingapore Representative Office.
Opening Ceremony of Singapore Representative OfficeElectric Power Master Plan Consulting
Construction of Coal-fired Thermal Power Station
Facility Overview
FacilityCapacity
Ultra-supercritical PressureCoal-fired Thermal Power2,000 MW (1,000 MW x 2)
Conducting social welfare activities usingthe special characteristics of the electricity business.
Inspecting Electric Equipmentin a Social Welfare Facil ity
We promote and support local art,
cul ture and spor ts by holding
concerts, culture lectures, sports
tournaments and so forth.
We support the promotion of culture and sports.
Concert Organized by Chugoku Electric
We engage in educational support activities to raise interest in and
concern for environmental and energy problems among children, who will
form the next generation.
These act iv i t ies are
dubbed the Wakuwaku
E-School and comprise
education for energy
and the environment
held at various venues,
as well as classes given
at schools and study
tours of our facilities.
Educational support activities to stimulate children’s curiosity.
Wakuwaku E-School Environmental Learning Class in aWater Conservation Forest Belonging to Chugoku Electric
The executives of the EnerGia Group, in the awareness that it is their own
role to realize this Charter, will not only set examples in their own conduct
but also will rigorously enforce the Charter so that all employees behave in
accordance with it.
Declaration of Compliance ManagementPromotion
In March 2006, the EnerGia Group enacted the "EnerGia Group CSR Charter
of Conduct" setting forth the direction of the CSR activities and the eight
principles as the foundation for company activities and conduct of all
executives and employees in the Group. Through this Charter, we are
promoting CSR activities that give priority to compliance.In order to respond flexibly and effectively to changes in the business
environment, we establish and share our ideals for human resources
needed in this age of change.
Furthermore, as our employees refine their own personal qualities, we
create systems for our employees with a diverse range of individuality and
expertise to be able to consolidate their individual strengths to continuously
create new value.
We will not allow the lessons of the past improper incidents to fade from memory. Firm in our resolve never again to repeat them, we are united as a
group in promoting management that accords top priority to compliance, with our executives leading by example.
We believe that the EnerGia Group’s fundamental mission is to fulfill its
duties as a member of the community and progressively contribute to the
sustainable development of society, through the Group operations whose
mainstay is the electricity business. We further believe that the foundation
for that lies in being trusted - by our customers primarily, as well as by our
stockholders and investors, our local communities, our business partners,
our employees, and many others.
On the basis of such awareness, all of the executives and employees in
the Group will promote CSR efforts in accordance with the conduct principles
below, aiming to be a corporate group that the community trusts and
chooses.
EnerGGia Group CSR Charter of Conduct
The Chugoku Electric Power Co., Inc. will unite the efforts of the whole company to engage in promotion of compliance management, with our executives setting the example.
●We recognize that "compliance" means "valuing and abiding
by social norms including ethics and morality", and that
engagement therewith is indispensable in order for an
enterprise to continue its existence in the community.
●Based on such recognition, we will work with our whole
strength to promote management that takes as its foundation
"to place priority on compliance in managing every business
activity", so as to meet the community’s demands for
thorough power facility safety, stable supply of electricity,
and low electricity rates.
●In order to realize "placing top priority on compliance", we
will abide by the code of conduct in the Chugoku Electric
Corporate Code of Ethics, practicing daily the following
"three actions" therein as requiring particular observance.
Chugoku Electric supports the independence of persons with disabilities.
We collaborate with schools and a public job-placement office to continuously
hire persons with disabilities. Our persons with disabilities employment
rate as of June 1, 2016 is 2.14%. (Legal employment rate is 2.0%)
Employing the Persons with Disabilities
Chugoku Electric has various system to support our employees’ work and
family. Employees can take advantage of our temporary leave program,
short-time employment program and night shift exemption program to take
care of children and the elderly. Parents can also take an absence to look
after sick children. We are determined to create a better working environment
for our employees, such as by lending out mobile personal computers to
help parents on maternity or paternity leave develop their skills.
Activities to Support Work and Family
We are determined to create an environment where our female employees
can positively participate in jobs based on aptitude and training plans.
Capable and able women employees are actively assigned to administrative
positions. As of the end of March 2016, there were 152 women in administrative
positions. (excluding doctors)
Promoting the Active Participation of Female Employees
Cultivating Human Resources
Our entire group gives top priority to compliance in their management approach.
SafetyAssurance
Placing top priority on assuring safety, we will work to heighten safety consciousness and will soundly carry out the necessary measures.
Respect forHuman Rights
With a spirit of respect for basic human rights underlying our business activities, we will strive toward the realization of a society in which no discrimination whatsoever is practiced and human rights are truly respected.
Promotion ofCompliance
We will abide by relevant domestic and overseas laws, regulations and rules, and by the spirit thereof, and will promote fair business activities that are backed by ethics.
Rigorous"Customer-First"
Making it our basic purpose to meet our customers’ wide-ranging needs, we will promote business activities that always put customers first, in ways such as providing good-quality products and services that meet their satisfaction.
Active Tackling ofEnvironmental
Problems
We will promote environmental management that actively engages in environmental preservation activities, so as to contribute to the realization of a society that is capable of sustainable development.
Contributions toLocal Community
Development
As a corporate group with roots in our region, we will contribute to the development of local communities through many kinds of business activities.
Enhancement ofCommunicationwith Community
Through communication with broad sections of the community, we will strive to respond conscientiously to the community’s comments and wishes and reflect them in our operations. We will also actively publish information so as to raise the transparency of our business activities.
Formation ofVibrant Corporate
Culture
We will improve internal communication, and moreover will work to cultivate self-directing and self-reliant human resources, and to have skills handed on from seniors to juniors, so as to form a freely communicating, vibrant corporate culture.
3. Actively correcting things
○Where matters have been handled inappropriately, we will actively correct them without delay.
○We will endeavor to revise any rules that do not match actual circumstances.
2. Speaking honestly
○We wi l l no t keep doubts and problems to ourselves, but will talk them over with others in our workplaces and among organizational units.
○We will explain matters voluntarily and appropriately to customers and the community.
1. Consulting our consciences
○We will examine our own actions in the light of our social consciences.
○We will consult the rules without fail whenever we have any doubts about our work.
● By “thinking by ourselves,” we mean focusing our wisdom and creating new value from the perspective of our customers.● By “acting by ourselves,” we mean challenging and taking action with resolute determination with regard to new and unprecedented issues and tasks.
In these changing times, we believe inthe concept of “Thinking and actingby ourselves,” we ...
Ideal Human Resources that are in Demand
EnerGia Group promotes CSR activities.We are involved in cultivating human resourcesand building systems that can respond flexiblyand effectively to change and create new value.
4241
Chugoku Electric has established a fair personal management policy and
aims to vitalize our human resources. Our policy allows our employees to
work with a sense of ambition and achievement, and utilize their capacities
to aim for higher results.
Creating Vibrant Corporate Culture
Every April, we hire new graduates (including those who have graduated
within the past three years). We also have a mid-career recruiting policy to
hire persons with advanced professional capacities, as well as foreign
workers.
Employing Diverse Human Resources
Human Resources and Organization, CSRCollective
Power ComplianceCollective Power
■ Declaration of Compliance Management PromotionAfter introspecting on the series of improper incidents involving our generation facilities that came to light from the fall of 2006 onward, we determined to make "placing top priority on compliance in every business activity" the foundation of our management, and in June 2007 announced our resolve and stance in that regard through a Declaration of Compliance Management Promotion.
■ Chugoku Electric Corporate Code of Ethics
Toward building the relationships of trust with the community that will form the foundation for the company’s business activities, we have formulated the Chugoku Electric Corporate Code of Ethics setting forth what actions are appropriate for Chugoku Electric as a corporation, and the employees who work in it, to take. Rigorous adherence to this code is being enforced.
■ Corporate Ethics CommitteeAs an advisory body for the Board of Directors, the Corporate Ethics Committee conducts discussions on matters relating to compliance and offers such proposals and opinions as may be needed. Three experts from outside the company are included in the membership, so that the committee receives information on social demands from a broad range of customers and the regional society.
■ Corporate Ethics Inquiry Centers
"Corporate Ethics Inquiry Centers" have been established in the Compliance Promotion Division (within company) and law office (outside company) as part of our whistleblower system. With this system, anyone involved in the operations of Chugoku Electric or its Group companies can inform on, or have consultations regarding, breaches of law and other cases concerning corporate ethics.
■ Main Compliance Promotion Measures
○In order to have the "top priority for compliance" consciousness thoroughly inculcated in all of us from top management to individual employees, we are carrying out compliance training and furthermore have designated November of every year as Compliance Emphasis Month, during which we implement various measures on an intensive basis. In these ways, we are working to bring about an efficacious heightening of compliance consciousness.
○We conduct "workplace situation and employee consciousness surveys" targeting all employees. The results of these surveys are used as input for assessment and improvement of compliance promotion measures, fed back into workplaces, and utilized in discussions and so forth aimed at creation of better workplaces.
Thermal Power Stations
NuclearPower Station
ThermalPower Stations
Shimane Nuclear Power Station Misumi Power Station Osaki Power StationTamashima Power StationMizushima Power Station
PowerStationName
AddressApproved
Output （kW）UnitNo.
Boiler (max. evaporation
volume t/h)
Turbine(kW)
Generator(kVA)
OperationStart Date
FuelUsed
Shimonoseki
June 1998
November 1961
August 1963
February 1973
March 1971
April 1972
June 1974
November 2000
April 1972
September 1981
December 1992
January 1996
September 1979
January 1987
March 1967
September 1977
April 1986
* 1 GT: Gas turbine * 2 ST: Steam turbine * 3 Operations halted * 4 November 1990: Initial shaft operation started * 5 March 1994: Initial shaft operation started
Shimonoseki Power StationShin-Onoda Power StationKudamatsu Power StationYanai Power StationIwakuni Power Station
As of March 31, 2016Major Supply Facilities
2,909.155
7,765
35.6
7,800.6
820
6
11,535.755
99
9
3
12
1
2
114
Photovoltaic
Total
Nuclear
Hydroelectric
SteamPower
InternalCombusion
PowerThermal
PowerStations Subtotal
Type Number ofLocations
Capacity (MW)(Max. Output)
* 1 Distribution towers (22 kV) include a 22 kV transformer room and 22 kV pole transformers.* 2 Distribution lines include low-voltage lines, but transmission facilities for distribution substations are excluded.
Nuclear Power StationThermal Power Stations ( internal combustion)
4443
Kuroki Power Station
Units 1 to 5 7.38 MW[ internal combustion]
Misumi Power StationUnit 1 1,000 MW(preparing to start construction of Unit 2 1,000 MW)
Matanogawa Power StationUnits 1 to 4 1,200 MW
Shin-Nariwagawa Power StationUnits 1 to 4 303 MW
Unit 1 175 MWUnit 2 400 MW
Mishima Power Station
Units 1 to 4 2.9 MW(preparing to start construction of Unit 4 +0.5 MW)
[ internal combustion]
Saigo Power Station
Units 1 to 6 25.32 MW[ internal combustion]
Shimane Nuclear Power StationUnit 2 820 MW(Unit 3 1,373 MW under construction)
Nishi-Shimane
Hino Chizu
Nabara Power StationUnits 1 and 2 620 MW
Shin-OkayamaHigashi-Okayama
ShimonosekiPower Station
Unit 1 500 MWUnit 2 500 MW
Shin-OnodaPower Station
Unit 1 285 MWUnit 2 156 MWUnit 3 340 MW
MizushimaPower Station
Unit 3 700 MW
KudamatsuPower Station
(preparing to start construction ofUnits 1 and 2 1,373 MW × 2)
Kaminoseki Nuclear Power Station
Units 1 and 2 series1,400 MW
YanaiPower Station
Unit 2 350 MWUnit 3 500 MW
IwakuniPower Station Unit 1 350 MW
Unit 2 350 MW Unit 3 500 MW
TamashimaPower Station
3 MW
FukuyamaPhotovoltaicPower Station
3 MW
Ube PhotovoltaicPower Station
Shin-Yamaguchi
Higashi-Yamaguchi
Shin-Nishi-Hiroshima
Shin-Hiroshima
Unit 1 series [1-1]259 MW(operation halted)
OsakiPower Station
Takehara Power Station ofElectric Power Development Co., Ltd.
Fukuyama Joint Power Station ofSetouchi Joint Thermal Power Co., Ltd.
Kurashiki JointPower Station ofSetouchi Joint ThermalPower Co., Ltd.
Thermal Power Station
Switching Station (220 kV and over)
Pumped Storage-type Hydroelectric Power Station
Alternative Energy Power Station
Substation/Switching Station (220 MW and over)
Other Company’s Thermal Power Station
220 kV Transmission Line
Other Company’s Transmission Line
500 kV Transmission Line
*2Distribution
Lines
*3
*4
*5
*1
*2
Nuclear Power Station
Hydroelectric Power Stations
■River names indicate major rivers where water is taken.
■Explanation of symbol name for type Conduit-type
Dam and Conduit-type
Dam-type
Pumped Storage-type
Mixed Pumped Storage-type
(Type with both Dam-type and Pumped Storage-type)
C:
DC:
D:
P:
M:
Hiroshima
Yamaguchi(9)
Otagawa
Nishikigawa
Oigawa
Abugawa
Otagawa
Kabe
Yasaka
Nishikigawa-Daini
Hazakami
Koudou
Nishikigawa-Daiichi
Oigawa-Daini
Fukue
Choumonkyo
Sasanamigawa
Ota,Yoshiyama
GounoGounokawa
OzeOzegawa
Nishiki,Kinpou
Nishiki
Nishiki
Nishiki
Oi
Oi,Fukui
Abu,Ikumo
Sasanami
Prefecture(No. of Power
Station)
RiverSystem River
PowerStation
OperationStart Date
Power GeneratorNo. of UnitsPower
GeneratorNo. of Units
April1959
September 1953
July1988
August1918
October1924
April1952
April1941
November 1927
August1989
August1975
November 1961
NabaraNabara
NukuiTakiyamaMarch2001
July1976
Fukuyama Photovoltaic Power Station
Prefecture(No. of Power
Station)
RiverSystem
RiverPowerStation
Power GeneratorNo. of UnitsPower
GeneratorNo. of Units
Shimane(20)
Tottori(19)
Tenjingawa
Hinogawa
AsahigawaHinogawa
Hinogawa
Ashizu
Shin-Oro
Ouchi
Azougawa
Mochigase
Kurumino
Hattou
Takeichi
Arafune
Shimohata
Shimonishitani
Maki
Kurosaka
Matanogawa
Matanogawa-Damu
Kawahira
Shin-Kawahira
Asahi
Kitahara
Kawate
Yumura
Hinobori
Mitoyagawa
Kubota
Kitamata
Kitamata,Sendai
Azou, Nakatsumiand others
SendaiSendaigawa
Kurumino,Hosomi
Hattou
Hattou
Waji
Tashiro
Tenjin,Tashiro
Tenjin
Inga, Nakaharaand others
Kitamata, Ayakidaniand others
Doyou,Matano
Matano
Hino
Hino
Hino
Fukano
Hii
HiigawaHii,
Fukano
Mitoya
Kando
OttachiKando
Hii,Ai
Kawahira-DainiHino
Gounokawa
Hiigawa Ushio
Izuhagawa
Kando
Izuwa
Hiroshima(33)
Ashidagawa
Nutagawa
Kurosegawa
Yahatagawa
Ozegawa
Takahashigawa
Gounokawa
Otagawa
Fuchu
Mukunashigawa
Hiro
Kouchi
Kurisugawa
Kuba
Kawanishi
Ochiai
Kannose
Kimita
Takaya
Moribara
Uchinashi
Doi
Shibakigawa-Daiichi
Ashida
Mukunashi
Kurosegawa
Yahatagawa
Yahatagawa
Ozegawa,Nakamichiand othersOzegawa,
Kujima
Nariwa
Rokunohara,Yuki and others
Shin-TaishakugawaTaishaku
TaishakugawaFukumasu
Kannose,Takechidaniand others
Kannose
Kannose
Kannose,Hagi
Ota
Ota
Shibaki
Gouno,Ikuta Shin-Kumami
Prefecture(No. of Power
Station)
RiverSystem
RiverPowerStation
Power GeneratorNo. of UnitsPower
GeneratorNo. of Units
Uokiri
Shibakigawa-Daini
Shibaki, Itagedaniand others
FunoFuno
Kake
Yoshigase
Yasuno
Manohira
Takiyama,Uchigakure
Takiyama,Hitono
Ota,Takayama and
others
TakimotoTakiyama
Ota, Jiryouand others
TakiyamagawaTakiyama,Osa and others
ShimoyamaTakiyama,
Osa and others
GeihokuOsa
Ube Photovoltaic Power Station
Shimane
Okayama(18)
Gounokawa
Sufugawa
Takatsugawa
Kasugagawa
Yuigawa
Yoshiigawa
Kasubuchi-Daini
Kasubuchi-Daiichi
Akatsuka
Sufugawa-Daiichi
Sufugawa-Daini
Nichihara
Hikimi
Sumikawa
Toyokawa
Minamidani
Yui
Heisakubara
Kamisaibara
Okutsu-Suisou
Okutsu
Iri
Yubara-Entei
Yubara-Daiichi
Katsuyama-Daiichi
Katsuyama-Daini
Sakusei
Hayamizu,Kube
Hayamizu
Gouno
Sufu,Kidodani
Sufu
Takatsu
Hikimi
Hikimi
Hikimi,Ishidani
Kasuga
Yui
Onbara, Endouand others
Hade
Yoshii
Yoshii,Nakatsukouand others
Yoshii
Asahi
Asahi
Asahi
Asahigawa
Shinjou
Asahi,Shinjou
Prefecture(No. of Power
Station)
RiverSystem River Power
Station
TomiMeki
Yubara-DainiAsahi
Okutsu-Daini
Yoshii, Hadeand others
Takahashigawa
Osakabe
Osakabe-Chouseiike
Shin-Nariwagawa
Tahara
Kurodori
Osakabe
Osakabe
Nariwa,Shimogou
Nariwa
Nariwa
Main HydroelectricPower Stations
Ashizu Power Station (Mitaki Dam) Kurosaka Power Station (Omiya Dam) Yubara-Daiichi Power Station(Yubara-Entei)Shin-Taishakugawa Power StationUshio Power Station (Kijima Dam) Nishikigawa-Daiichi Power StationShibakigawa-Daiichi Power StationTakimoto Power Station (Takimoto Dam)Otagawa Power StationFuchu Power Station
