INOGATE project workshop, JSC “LATVENERGO” Energy Efficiency Centre, Jūrmala, 25.09.2013
Energy efficiency and renewable energy sources status regarding Riga city Sustainable Energy Action Plan
Juris Golunovs, Head of Energy Efficiency Information Centre of Riga Energy
Agency
City of Riga • City of Riga:
– area 307km2; – population 650 640; – population density 2 119 residents/km².
Riga city Sustainable Energy Action Plan 2010-2020 (SEAP)
• Riga – as the first capital city - signed The Covenant of Mayors in September, 2008 and assumed an obligation
20-20-20 at 2020
• SEAP was approved by the Riga City Council in 2010
• The first progress report of the SEAP was worked up in 2011. There was pointed out that CO₂ emissions decreased by 49% compare to the 1990. The second progress report of the SEAP - which was worked up in 2012 – outlined CO₂ emissions reduction by >50% compare to the 1990.
Riga SEAP structure
Main chapters:
•Emissions inventory, base year choise, emissions forecast until 2020,
•Energy consumption reduction and EE improvement measures,
•RES use
Chapters of supporting measures:
•Management structures of Riga SEAP implementation,
•Society involvement in the SEAP implementation,
•Possible financial tools and necessary funding for SEAP implementation,
•EU, state and local governement supporting measures,
•Necessary regulations and laws for SEAP implementation
Potential sources of funding of energy efficient renovation of buildings (SEAP)
Complex renovation of multi-apartment buildings
Structural Funds, loan resources, revolving fund, national and municipality aid measures, ESCO, MESCO
Complex renovation of municipal public buildings in Riga
Funding from the flexible mechanisms of the Kyoto Protocol, budget of the municipality
Tools: SEAP & CO2 Baseline Inventory
The baseline C02 emission Inventory for Riga • The baseline emission have been calculated for
year 1990; 1995; 2005; 2008 (CO2 emissions); • Projection of emissions for year 2010; 2015 and
2020 have been evaluated; • Standard emission factors in line with the IPCC
principles have been chosen; • Country specific CO2 EF for primary energy
have been implemented
Calculated CO2 emissions in Riga 1990 -2008
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500,0
1000,0
1500,0
2000,0
2500,0
3000,0
3500,0
4000,0
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1990 1995 2000 2005 2008
thous t
TransportFinal fuel consumptionElectricity consumptionDH consumption
Evaluated potential of demand side emission reduction measures, year 2020
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50
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250
Min Opt Max
thous t CO2 Electric cars in transport
Biofuel in transport
solar heat collectors
heat pumps in decentralisedheat supplyRenovation of municipalbuildingsRenovation of multi dwellingresidential buildingsTotal "Rigas Siltums"
Projected CO2 emissions in Riga for different scenarios
1500
2000
2500
3000
3500
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4500
1990 1995 2000 2005 2008 2010 2015 2020
thous t CO2
referencescenario
Scenario Min
Scenario Opt
Scenario Max
Energy consumption reduction and EE improvement measures (SEAP)
◙ Energy production and supply sector: - Heat supply - Elektricity supply - Fuel consumption, incl. decentalized heat supply. ◙ Energy consuming (demand side) sector: - City housing sector - Public buildings secktor of the city - Streets and parks lightening - The public transport of the city. ◙ Urban development planning measures for energy consumption reduction.
Heat supply in Riga city
Main type of heat supply – district heating (DH) - covers 76% of total heat demand
Main fuel - natural gas
70% of heat for Riga DH system is supplied by CHP plants TEC-1 and Rīgas TEC-2
30% of heat energy is produced in JSC “Rīgas siltums”:
- 5 heat plants
- 38 gas-fired boiler houses (BH)
90% of consumed heat energy is produced in high efficient combined heat & power (CHP) mode
Heat distribution losses is reduced below 13%
Energy efficiency improvement measures in the DH system
◙ EE improvement in the CHP “Imanta” by installation of absorbtion type heat pump (2 MW)
◙ Flue gas condensing equipment installation in heat plants for flue gas heat utilization
Key rehabilitation measures of DH system: - decommissioning of central heat substations(185) - installation of prefabricated building heat substations (>8.000) - heat distribution network rehabilitation by use of prefabricated isolated pipes - heat meters remote reading introduction for heat billing & energy management needs (8.000 pcs)
Best practise examples
Main demand side measures for EE improvement & CO2 emission reduction in Riga
Measure
Energy saving or substitution, year 2020,
Max scenario, GWh Renovation of multi-apartment residential buildings
780
Renovation of municipal buildings 81
Solar collectors in decentralized heat supply
25
Heat pumps in decentralized heat supply
48
Biofuel for transport 330
Refurbishement of Riga city public buildings - annual energy savings of around 12,5 thous. MWh
.
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2
4
6
8
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16
2010.g. 2011.g.
Mio
EUR
KPFI RD NOR
100 - number of Riga city public buildings which were refurbished until 2013
Investments in energy efficient refurbishement of public buildings – schools and kindergartens
Best practise example
Aims of energy efficient renovation in the multi-apartment building stock of Riga (Riga SEAP)
Specific annual energy consumption [kWh/m2] of multi-apartment building stock in Riga city
neighbourhoods before refurbishment
.
2001: The first energy efficient renovation in Riga
2004 – 2008: energy efficient renovation of few multi-apartment buildings
2010: Continious growth of number of energy efficiently renovated apartment buildings in Riga
2011. pirmo reizi Latvijā ieviests tehnisks jauninājums viencauruļu apkures sistēmas
veiktspējas paaugstināšanai
2012: Total number of renovated multi-apartment buildings reached
52 (13 only in 2012)
Bolderāja Mangaļsala
Mežciems, Berģi
7ēkas DzĪK “Bāka-2”
Renovation 2012
464. sērijas ēku īpatnējais siltumenerģijas patēriņš 2012.g 12 mēnešos
Īpatnējo siltumenerģijas izmaksu salīdzinājums divās konkrētās gandrīz
vienāda lieluma 464.sērijas Rīgas ēkās - renovētā un nerenovētā - 2012.gadā.
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kWh/
m2
Renovēta Nerenovēta
Riga Energy Agency performs monitoring of renovation results –specific energy consumption for space heating per square meter of heated floor area
kWh/m2
Shallow renovation or deep renovation ?
Selecting by financially efficient
U-values [W/m2 x K] of building
constructions?
What else?
Riga U-values for better buildings
Ecofys GmbH
RES use in Riga:
• hydroenergy – Riga HES (Daugava cascade) connectioned to the power supply system of Riga
• biogas
• solid biomass
• subsurface ground heat
• solar energy
• electric cars
B I O G A S
Biogas Cogeneration (CHP) plants: ◙ Sewage treatment plant “Daugavgrīva” (LtD “Rigens”) – 2,1 MWel.; 2,6 MWth; ◙ LtD “Getliņi EKO” solid communal waste treatment plant – 5,3 MWel.; 6,8 MWth. Heat to be used in the greenhouses farm.
Solid biomass – wood chips
JSC “Rīgas siltums” - main operator of centralized district heat supply in Riga
The target – increase the share of solid biomass up to the 20% in the heat supplier fuel balance before the year 2015
SUBSURFACE GROUND HEAT
Riga municipality installed space heating based on the ground heat pumps in the two kindergardens, thereby closed the two coal-fired boiler houses:
Kindergarden “Kastanītis” – 10 thermal probes in vertical boreholes with depth – 120m;
Two stage heat pump 57,5 kW
SOLAR ENERGY
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Jan
Feb Mar AprMaij
sJū
n Jūl
Aug Sep Okt Dec
BerlīneHelsinkiStokholmaKopenhāgenaRīga
Global monthly solar radiation on horizontal surface in nordic cities of Europe (kWh/m²):
Most important solar plant in Riga was installed in the hazardous waste treatment company “Zaļā Latvija” LtD - with the annual designed capacity 1500 kWh
ELECTRIC CARS IN RIGA
First in Latvia registered electric cars (9) are in Riga, incl.:
- Riga municipality – 6 pcs;
- JSC “Latvenergo” – 2 pcs
- electric cars sales dealer – 1 pcs
There was registered in Riga also the car with both electrical and gasoline engines, which is worlds famous OSCAR - first electric car – participant of Dacara international rally competitions
ELEKTRIC CARS IN RIGA (2) (EV charging stations map)
EU “green city” index of Riga (Siemens evaluation)
Upgrading SEAP: roadmap to the status of smart city
System provides automatic remote reading of heat consumption data from 8.000 heat meters
• No necessity of monthly visits of consumer substations in order to make manual records of heat meters data
• No necessity of manual data input into system interface • Data automatic input transmittance allows automatic preparation of
consumers invoices • Remote evaluation possibility of heat consumption
The project is realized by Ltd. “Citrus Solutions” together with Miltel Communications, which provides management software, the installation and construction of all equipments, both base stations and end-connection devices, as well as overall project management and integration.
Example of data remote reading for commercial invoices preparation
Example of heat consumption data remote reading – project local benefits
• Heat is an expensive service that requires exact measurements and calculations.
• Automatic meter reading system makes records for all heat meters data in a given time by writing in the current system, excluding human factors on current data quality and minimizing potential errors.
• Reading data at a specific time enables accurate heat data analysis and evaluation of each user's heat consumption dynamics.
• This system can be linked to other IT systems for technical, analytical or customer services needs (for example - Energy Management System, etc.)
SMART CITIES partnership in cities and reagions covers three sectors
International Conference “Hydrogen technology opportunities for sustainable development of cities”
Riga, 20.03.2013
Hydrogen in the city: smart technology for smart city
Thank you for your kind attention!
http://www.rea.riga.lv
