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Welcome / Bienvenue RETScreen Training Institute RETScreen 101 – Introduction to Clean Energy Project Analysis
Transcript

Welcome / Bienvenue

RETScreen Training InstituteRETScreen 101 – Introduction to Clean Energy Project Analysis

Hundreds Gather To Fight Global Warming!

RETScreen’s Mission:Empower Cleaner Energy Decisions Worldwide

Saturday, Aug. 29 Agenda Location Trainers

8:30-9:00 am Coffee and checking in Hallway outside FDA 1

9:00-10:30 am Introduction toRETScreen 4 Software

Demo – Wind Energy Project

FDA 1 Greg Leng, NRCan

10:30-11:00 am Break (snack provided) Hallway outside FDA 1

11:00-12:30 pm Assignment:

Power – Photovoltaic– Feed-in Tariff – Policy / Canada

FDA 1 Greg Leng, Kevin Bourque, NRCan

12:30-1:30pm Lunch (provided) Hallway outside FDA 1

1:30-3:00 pm Overview ofEnergy Efficiency Project Analysis

Demo – Commercial Building

FDA 1 Kevin Bourque, NRCan

3:00 - 3:30 pm Break (snack provided) Hallway outside FDA 1

3:30-5:00 pm Assignment:

Lights – Compact Fluorescent Light & Electrical Equipment – Computer

FDA 1 Kevin Bourque, Greg Leng, NRCan

RETScreen Status

World’s leading clean energy decision-making software

Energy efficiency; heating & cooling; power generation; and cogeneration• Fossil fuels• Renewable energy

36 languages covering 2/3rds Earth’s population

445,000+ users in 222 countries & territories

30,000+ new users each year

600+ universities & colleges use for training & research

$8 billion in direct user savings since 1998

Core development team of 11 from Varennes research centre

+ 2 to 6 Co-op students/semester+ Other Varennes staff

350+ experts from industry, government & academia

NASA Langley Research Center

York University & global network of trainers

Software Development, Dissemination & Training

RETScreen Software Suite

Downloading and running RETScreen Software Suite will install two separate programs:

RETScreen 4 is an Excel-based clean energy project analysis software tool that helps decision makers quickly and inexpensively determine the technical and financial viability of potential renewable energy, energy efficiency and cogeneration projects.

RETScreen Plus is a Windows-based energy management software tool that allows project owners to easily verify the ongoing energy performance of their facilities.

Also available on RETScreen website:

REFRIG3 is an Excel-based RETScreen Energy Efficient Arena & Supermarket Project Model (Version 3 format)

Project Analysis

Energy resource at project site(e.g. solar radiation)

Equipment performance(e.g. solar absorptivity)

Initial project costs(e.g. solar collectors)

“Base case” credits(e.g. conventional cladding)

Annual & periodic costs(e.g. vandalism)

(Solar Air Heating Example)

Photo: NRCan

Financial Analysis

Base case system energy cost

(e.g. retail price of heating oil)

Financing

(e.g. debt ratio & length, interest rate)

Taxes on equipment & income (or savings)

Environmental characteristics of energy displaced

(e.g. oil, natural gas, grid electricity)

Environmental credits and/or subsidies

(e.g. GHG credits, deployment incentives)

Decision-maker’s definition of cost-effective

(e.g. payback period, ROI, NPV, energy production costs)

Analysis Type (Start Sheet)

User-definedUser-defined Energy

Green powerOther

Base case Proposed caseTechnology Grid electricity Wind turbinePower capacity kW 2,000Capacity factor % 30%Electricity exported to grid MWh 5,256Incremental initial costs $/kW 2,000O&M (savings) costs $/kWh 0.010Electricity export rate $/kWh 0.150

Emission Analysis

Base case electricity system (Baseline)

GHG emissionfactor

(excl. T&D)T&D

lossesGHG emission

factorCountry - region Fuel type tCO2/MWh % tCO2/MWhCanada All types 0.211 5.0% 0.222

Electricity exported to grid MWh 5,256 T&D losses 8.0%

GHG emissionBase case tCO2 1,167Proposed case tCO2 93Gross annual GHG emission reduction tCO2 1,074GHG credits transaction fee % 0.0%Net annual GHG emission reduction tCO2 1,074 is equivalent to 218

GHG reduction incomeGHG reduction credit rate $/tCO2 0.00

Financial Analysis

Financial parametersInflation rate % 2.0%Project life yr 20Debt ratio % 70%Debt interest rate % 7.00%Debt term yr 10

Initial costsIncremental initial costs $ 4,000,000 100.0%Other $ 0.0%Total initial costs $ 4,000,000 100.0%

Incentives and grants $ 0.0%

Annual costs and debt paymentsO&M (savings) costs $Fuel cost - proposed case $ 0Debt payments - 10 yrs $ 398,657Other $Total annual costs $ 451,217

Annual savings and incomeFuel cost - base case $ 0Electricity export income $ 788,400Other $Total annual savings and income $ 788,400

Financial viabilityPre-tax IRR - equity % 34.6%Pre-tax IRR - assets % 12.3%Simple payback yr 5.4Equity payback yr 3.2

RETScreen Energy Model - User-defined

Cum

ulat

ive

cash

flow

s ($

)

Year

Cumulative cash flows graph

Cars & light trucks not used

-2,000,000

0

2,000,000

4,000,000

6,000,000

8,000,000

10,000,000

12,000,000

14,000,000

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Fuels & schedules Show data

Fuel Fuel type 1 Fuel type 2 Fuel type 3 Fuel type 4 Fuel type 5 Fuel type 6Fuel type Electricity Natural gas - m³Fuel consumption - unit MWh m³ #N/A #N/A #N/A #N/AFuel rate - unit $/kWh $/m³ #N/A #N/A #N/A #N/AFuel rate 0.100 0.400

Schedule Unit Schedule 1 Schedule 2 Schedule 3 Schedule 4 Schedule 5 Schedule 6Description 24/7

Occupied Occupied Occupied Occupied OccupiedTemperature - space heating °C 23.0 21.0Temperature - space cooling °C 23.0 24.0

Unoccupied Unoccupied Unoccupied Unoccupied UnoccupiedTemperature - unoccupied +/-°C 3.0

Occupied Occupied Occupied Occupied OccupiedOccupancy rate - daily h/d h/d h/d h/d h/d h/d

Monday 24 18.0Tuesday 24 18.0Wednesday 24 18.0Thursday 24 18.0Friday 24 18.0Saturday 24 18.0Sunday 24 18.0

Occupancy rate - annual h/yr 8,760 6,570 0 0 0 0% 100% 75% 0% 0% 0% 0%

Heating/cooling changeover temperature °C 16.0Length of heating season d 242Length of cooling season d 123

Facility characteristics Show data

Show: Heating Cooling ElectricityIncremental initial costs

Fuel cost savings

Incremental O&M savings Simple payback

Include measure?

Fuel saved GJ GJ GJ $ $ $ yrHeating systemBoiler 0 - - 0 0 0 -Cooling systemAir-conditioning - 0 - 0 0 0 -Building envelopeAppartment building 2,686 0 - 60,000 28,659 0 2.1VentilationLightsElectrical equipmentHot waterOtherTotal 2,686 0 0 60,000 28,659 0 2.09

Summary Show data

Fuel type

Fuel consumption -

unit Fuel rateFuel

consumption Fuel costFuel

consumption Fuel cost Fuel savedFuel cost savings

Natural gas m³ 0.400$ 160,194.2 64,078$ 88,546.3 35,419$ 71,647.8 28,659$ Total 64,078$ 35,419$ 28,659$

Project verificationFuel

consumptionFuel type Base caseNatural gas m³ 160,194.2

Heating Cooling Electricity TotalEnergy GJ GJ GJ GJEnergy - base case 4,204 0 0 4,204Energy - proposed case 2,324 0 0 2,324Energy saved 1,880 0 0 1,880Energy saved - % 44.7% 44.7%

BenchmarkEnergy unit kWhReference unit m² 7,500User-defined m² 2,000

Benchmark Heating Cooling Electricity TotalEnergy kWh/m² kWh/m² kWh/m² kWh/m²Energy - base case 155.7 0.0 0.0 155.7Energy - proposed case 86.1 0.0 0.0 86.1Energy saved 69.6 0.0 0.0 69.6

RETScreen Energy Model - Energy efficiency measures project

Base case Proposed case Fuel cost savingsFuel

Fuel consumption -

historical

Fuel consumption -

unit

Fuel consumption -

variance

SettingsMethod 1 Notes/Range Second currencyMethod 2 Second currency Notes/Range None

Cost allocation

Initial costs (credits) Unit Quantity Unit cost Amount Relative costsFeasibility study

Feasibility study cost -$ Sub-total: -$ 0.0%

DevelopmentDevelopment cost -$ Sub-total: -$ 0.0%

EngineeringEngineering cost -$ Sub-total: -$ 0.0%

Energy efficiency measuresIncremental initial costs 60,000$ 100.0%

Balance of system & miscellaneousSpare parts % -$ Transportation project -$ Training & commissioning p-d -$ User-defined cost -$ Contingencies % 60,000$ -$ Interest during construction 60,000$ -$ Sub-total: Enter number of months -$ 0.0%

Total initial costs 60,000$ 100.0%

Annual costs (credits) Unit Quantity Unit cost AmountO&M

O&M (savings) costs project -$ Parts & labour project -$ User-defined cost -$ Contingencies % -$ -$ Sub-total: -$

Fuel cost - proposed caseNatural gas m³ 88,546 0.400$ 35,419$ Sub-total: 35,419$

Annual savings Unit Quantity Unit cost AmountFuel cost - base case

Natural gas m³ 160,194 0.400$ 64,078$ Sub-total: 64,078$

Periodic costs (credits) Unit Year Unit cost AmountUser-defined cost -$

-$ End of project life cost -$

RETScreen Cost Analysis - Energy efficiency measures project

Emission Analysis

Method 1 Global warming potential of GHGMethod 2 21 tonnes CO2 = 1 tonne CH4 (IPCC 1996)Method 3 310 tonnes CO2 = 1 tonne N2O (IPCC 1996)

Base case system GHG summary (Baseline)

Fuel mixCO2 emission

factorCH4 emission

factorN2O emission

factorFuel

consumptionGHG emission

factor GHG emissionFuel type % kg/GJ kg/GJ kg/GJ MWh tCO2/MWh tCO2Natural gas 100.0% 1,668 0.179 299Total 100.0% 1,668 0.179 299

Proposed case system GHG summary (Energy efficiency measures project)

Fuel mixCO2 emission

factorCH4 emission

factorN2O emission

factorFuel

consumptionGHG emission

factor GHG emissionFuel type % kg/GJ kg/GJ kg/GJ MWh tCO2/MWh tCO2Natural gas 100.0% 922 0.179 165Total 100.0% 922 0.179 165

Total 165

GHG emission reduction summary

Years of occurrence

Base caseGHG emission

Proposed caseGHG emission

Gross annualGHG emission

reductionGHG credits

transaction fee

Net annualGHG emission

reductionyr tCO2 tCO2 tCO2 % tCO2

1 to -1 299 165 134 134

Net annual GHG emission reduction 134 tCO2 is equivalent to 27.2

RETScreen Emission Reduction Analysis - Energy efficiency measures project

Cars & light trucks not used

T&D losses

Energy efficiency measures project

Financial parameters Project costs and savings/income summary Yearly cash flowsGeneral Year Pre-tax After-tax Cumulative

Fuel cost escalation rate % 2.0% 0.0% $ 0 # $ $ $Inflation rate % 2.0% 0.0% $ 0 0 -60,000 -60,000 -60,000Discount rate % 12.0% 0.0% $ 0 1 29,232 29,232 -30,768Project life yr 40 0.0% $ 0 2 29,817 29,817 -951

0.0% $ 0 3 30,413 30,413 29,463Finance 0.0% $ 0 4 31,022 31,022 60,484

Incentives and grants $ 0.0% $ 0 5 31,642 31,642 92,126Debt ratio % 100.0% $ 60,000 6 32,275 32,275 124,401Debt $ 0 0.0% $ 0 7 32,920 32,920 157,321Equity $ 60,000 100.0% $ 60,000 8 33,579 33,579 190,900Debt interest rate % 9 34,250 34,250 225,150Debt term yr $ 0 10 34,935 34,935 260,086Debt payments $/yr 0 11 35,634 35,634 295,720

12 36,347 36,347 332,066$ 0 13 37,074 37,074 369,140

Income tax analysis $ 35,419 14 37,815 37,815 406,955Effective income tax rate % $ 0 15 38,571 38,571 445,527Loss carryforward? $ 35,419 16 39,343 39,343 484,869Depreciation method 17 40,130 40,130 524,999Half-year rule - year 1 yes/no Yes 18 40,932 40,932 565,931Depreciation tax basis % $ 0 19 41,751 41,751 607,682Depreciation rate % $ 0 20 42,586 42,586 650,268Depreciation period yr 15 $ 0 21 43,438 43,438 693,706Tax holiday available? yes/no No 22 44,306 44,306 738,012Tax holiday duration yr 23 45,193 45,193 783,205

$ 64,078 24 46,096 46,096 829,301Annual income $ 0 25 47,018 47,018 876,320Electricity export income $ 0 26 47,959 47,959 924,279

Electricity exported to grid MWh 0 $ 0 27 48,918 48,918 973,196Electricity export rate $/MWh 0.00 $ 0 28 49,896 49,896 1,023,093Electricity export income $ 0 $ 0 29 50,894 50,894 1,073,987Electricity export escalation rate % $ 64,078 30 51,912 51,912 1,125,899

31 52,950 52,950 1,178,849GHG reduction income 32 54,009 54,009 1,232,858

tCO2/yr 0 33 55,089 55,089 1,287,948Net GHG reduction tCO2/yr 134 Financial viability 34 56,191 56,191 1,344,139Net GHG reduction - 40 yrs tCO2 5,342 % 50.7% 35 57,315 57,315 1,401,454GHG reduction credit rate $/tCO2 % 50.7% 36 58,461 58,461 1,459,916GHG reduction income $ 0 37 59,631 59,631 1,519,546GHG reduction credit duration yr % 50.7% 38 60,823 60,823 1,580,370Net GHG reduction - 0 yrs tCO2 0 % 50.7% 39 62,040 62,040 1,642,409GHG reduction credit escalation rate % 40 63,281 63,281 1,705,690

yr 2.1 41 0 0 1,705,690Customer premium income (rebate) yr 2.0 42 0 0 1,705,690

Electricity premium (rebate) % 43 0 0 1,705,690Electricity premium income (rebate) $ 0 $ 225,387 44 0 0 1,705,690Heating premium (rebate) % $/yr 27,340 45 0 0 1,705,690Heating premium income (rebate) $ 0 46 0 0 1,705,690Cooling premium (rebate) % 4.76 47 0 0 1,705,690Cooling premium income (rebate) $ 0 No debt 48 0 0 1,705,690Customer premium income (rebate) $ 0 $/MWh -791.21 49 0 0 1,705,690

$/tCO2 (205) 50 0 0 1,705,690Other income (cost)

Energy MWh Cumulative cash flows graphRate $/MWhOther income (cost) $ 0Duration yrEscalation rate %

Clean Energy (CE) production incomeCE production MWh 922CE production credit rate $/kWhCE production income $ 0CE production credit duration yrCE production credit escalation rate %

Fuel type

Energy delivered

(MWh) Clean energy1 Natural gas 922 Yes2 No3 No4 No5 No6 No7 No8 No9 No# No# No# No# No# No# No# No# No# No Year

After-tax IRR - equityAfter-tax IRR - assets

Total initial costs

Customer premium income (rebate)Other income (cost) - yrsCE production income - yrsTotal annual savings and income

Annual savings and incomeFuel cost - base caseElectricity export incomeGHG reduction income - 0 yrs

Debt payments - 0 yrs

End of project life - cost

Total annual costs

Periodic costs (credits)

O&MFuel cost - proposed case

RETScreen Financial Analysis - Energy efficiency measures project

No

Annual costs and debt payments

Cooling system

Energy efficiency measuresUser-defined

Balance of system & misc.

Incentives and grants

Declining balance

Cum

ulat

ive

cash

flow

s ($

)

Initial costsFeasibility studyDevelopmentEngineeringPower systemHeating system

Pre-tax IRR - equityPre-tax IRR - assets

Simple paybackEquity payback

Debt service coverageEnergy production costGHG reduction cost

Net Present Value (NPV)Annual life cycle savings

Benefit-Cost (B-C) ratio

-200,000

0

200,000

400,000

600,000

800,000

1,000,000

1,200,000

1,400,000

1,600,000

1,800,000

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40

Method 1 Method 2

Level 1: Basic information:

99,000 kW (99 MW)

Cost @ $1,900/kW

Capacity factor @ 26%

0% escalation rate (inflation)

O&M Costs $7M/yr

Scenario 1: Open Market

Electricity rate @ $0.05/kWh

Scenario 2: Green Policy Push

$0.12/kWh feed-in tariff (FiT)

or $0.05/kWh + $15/tonne GHG emissions trade

Level 2 (Energy model sheet) analysis Calculate capacity factor:

• Long Point climate data• Ontario Wind Resource Atlas• Vestas V82-1.65 MW – 78M

Photo credit: http://www.flickr.com/photos/cseeman/2725958511/sizes/z/in/set-72157606506379582/

Software Demo: Wind Energy Project

Questions?

www.RETScreen.net

Assignment:Power – Photovoltaic – Feed-in Tariff – Policy / Canada

Photo Credit: Carmanah Solar

Case Study AssignmentThe government of the province of Ontario, Canada aims to significantly increase private-sector investment in clean energy in the province. You are involved in the policy analysis process and are tasked with investigating three possible options for the electricity export rate paid to developers of photovoltaic (PV) power projects. For the purposes of this assignment, assume that the “hurdle rate,” or minimum acceptable pre-tax Internal Rate of Return (IRR) on equity, should be at least 12% in order to provide sufficient incentive to private developers to engage in the process.

For each policy option, determine the IRR and compare it with the hurdle rate. Consider the level of motivation to develop projects that you might expect from private developers under each option (based strictly on the rate of return), and whether or not the chosen tariff rate will generate excessive profit (i.e., have an IRR significantly in excess of that required to stimulate private developer interest). Finally, make a recommendation as to which policy option is the most promising for further investigation and development.

Site InformationA site located slightly north of Toronto is chosen to be representative for the program. A 50 kW rooftop PV installation with a 14% capacity factor is assumed to be a typical system for the purpose of this analysis.

Financial InformationYou may assume the following financial information: installed cost of $7,000/kW; project life of 20 years; 70% debt financing at 7% interest over 15 years. As a first approximation, assume the operations and maintenance costs to be zero.

Policy Option 1: No incentive beyond typical market rates paid to electricity producers. Assume an electricity export rate of $0.050/kWh.Policy Option 2: Electricity export rate of $0.420/kWh. Policy Option 3: Electricity export rate of $0.713/kWh.

Bonus Question: Calculate the capacity factor

Scenario Results Option 1 Option 2 Option 3

Pre-tax IRR on equity (%)

Pre-tax IRR on assets (%)

Simple payback (yr)

Equity payback (yr)

Assignment: DiscussionPower – Photovoltaic – Feed-in Tariff – Policy / Canada

Overview ofEnergy Efficiency Project Analysis

with RETScreen

Facility Types

Commercial & Institutional Buildings

Houses & Apartment Buildings

Both New & Existing Facilities

Industrial Plants & Processes

Photo: NRCan Photo: NRCan

Energy Efficiency AnalysisFu

elSteps

Minimizeusage

Maximizeefficiency

Optimize supply

End-

use

RETScreen Energy Efficiency Model

Base case vs. proposed case

Steps:

1. Fuel & schedules

2. Facility characteristics(energy + costs)

3. Summary (energy)

4. Emission analysis

5. Financial analysis

Fuels & schedules Show data

Fuel Fuel type 1 Fuel type 2 Fuel type 3 Fuel type 4 Fuel type 5 Fuel type 6Fuel type Electricity Natural gas - m³Fuel consumption - unit MWh m³ #N/A #N/A #N/A #N/AFuel rate - unit $/kWh $/m³ #N/A #N/A #N/A #N/AFuel rate 0.100 0.400

Schedule Unit Schedule 1 Schedule 2 Schedule 3 Schedule 4 Schedule 5 Schedule 6Description 24/7

Occupied Occupied Occupied Occupied OccupiedTemperature - space heating °C 23.0 21.0Temperature - space cooling °C 23.0 24.0

Unoccupied Unoccupied Unoccupied Unoccupied UnoccupiedTemperature - unoccupied +/-°C 3.0

Occupied Occupied Occupied Occupied OccupiedOccupancy rate - daily h/d h/d h/d h/d h/d h/d

Monday 24 18.0Tuesday 24 18.0Wednesday 24 18.0Thursday 24 18.0Friday 24 18.0Saturday 24 18.0Sunday 24 18.0

Occupancy rate - annual h/yr 8,760 6,570 0 0 0 0% 100% 75% 0% 0% 0% 0%

Heating/cooling changeover temperature °C 16.0Length of heating season d 242Length of cooling season d 123

Facility characteristics Show data

Show: Heating Cooling ElectricityIncremental initial costs

Fuel cost savings

Incremental O&M savings Simple payback

Include measure?

Fuel saved GJ GJ GJ $ $ $ yrHeating systemBoiler 0 - - 0 0 0 -Cooling systemAir-conditioning - 0 - 0 0 0 -Building envelopeAppartment building 2,686 0 - 60,000 28,659 0 2.1VentilationLightsElectrical equipmentHot waterOtherTotal 2,686 0 0 60,000 28,659 0 2.09

Summary Show data

Fuel type

Fuel consumption -

unit Fuel rateFuel

consumption Fuel costFuel

consumption Fuel cost Fuel savedFuel cost savings

Natural gas m³ 0.400$ 160,194.2 64,078$ 88,546.3 35,419$ 71,647.8 28,659$ Total 64,078$ 35,419$ 28,659$

Project verificationFuel

consumptionFuel type Base caseNatural gas m³ 160,194.2

Heating Cooling Electricity TotalEnergy GJ GJ GJ GJEnergy - base case 4,204 0 0 4,204Energy - proposed case 2,324 0 0 2,324Energy saved 1,880 0 0 1,880Energy saved - % 44.7% 44.7%

BenchmarkEnergy unit kWhReference unit m² 7,500User-defined m² 2,000

Benchmark Heating Cooling Electricity TotalEnergy kWh/m² kWh/m² kWh/m² kWh/m²Energy - base case 155.7 0.0 0.0 155.7Energy - proposed case 86.1 0.0 0.0 86.1Energy saved 69.6 0.0 0.0 69.6

RETScreen Energy Model - Energy efficiency measures project

Base case Proposed case Fuel cost savingsFuel

Fuel consumption -

historical

Fuel consumption -

unit

Fuel consumption -

variance

Fuels & Schedules

Fuel types: Natural gas Propane, Kerosene Oil, Coal, etc Biomass User defined Etc.

Schedules: Heating and cooling 24/7 Occupancy dependent Set-back temperature Set-up temperature

Fuel Fuel type 1 Fuel type 2 Fuel type 3Fuel type Electricity Natural gas - m³ BiomassFuel consumption - unit MWh m³ tFuel rate - unit $/kWh $/m³ $/tFuel rate 0.100 0.400 25.000

Facility Characteristics

Heating system

Cooling system

Building envelope

Ventilation

Lights

Electrical equipment

Hot water

Pumps

Fans

Motors

Facility Characteristics

Process electricity

Process heat

Process steam

Steam losses

Heat recovery

Compressed air

Refrigeration

Other

Summary Section

Fuel summary Project verification Benchmark

BenchmarkEnergy unit kWhReference unit m² 7,500

Benchmark Heating Cooling Electricity TotalEnergy kWh/m² kWh/m² kWh/m² kWh/m²Energy - base case 112 51 66 229Energy - proposed case 74 29 18 121Energy saved 38 23 48 108

Hot Water

Apartment building 40 units

Reduce flow by 35%

Reduce supply temp from 60 to 55 oC

Heat recovery, 20% efficiency, cost $15,000

O&M (water) savings $3,000/year

Fuel switch oil to natural gas

New water heater cost $40,000

See project database template: Hot water - Apartment

Software Demo:Hot Water & Commercial Building

Demo of Commercial Building – Full facility:

Energy efficiency measures - Commercial - Model National Energy Code for Buildings

Questions?

Fuels & schedules Show data

Fuel Fuel type 1 Fuel type 2 Fuel type 3 Fuel type 4 Fuel type 5 Fuel type 6Fuel type Electricity Natural gas - m³Fuel consumption - unit MWh m³ #N/A #N/A #N/A #N/AFuel rate - unit $/kWh $/m³ #N/A #N/A #N/A #N/AFuel rate 0.100 0.400

Schedule Unit Schedule 1 Schedule 2 Schedule 3 Schedule 4 Schedule 5 Schedule 6Description 24/7

Occupied Occupied Occupied Occupied OccupiedTemperature - space heating °C 23.0 21.0Temperature - space cooling °C 23.0 24.0

Unoccupied Unoccupied Unoccupied Unoccupied UnoccupiedTemperature - unoccupied +/-°C 3.0

Occupied Occupied Occupied Occupied OccupiedOccupancy rate - daily h/d h/d h/d h/d h/d h/d

Monday 24 18.0Tuesday 24 18.0Wednesday 24 18.0Thursday 24 18.0Friday 24 18.0Saturday 24 18.0Sunday 24 18.0

Occupancy rate - annual h/yr 8,760 6,570 0 0 0 0% 100% 75% 0% 0% 0% 0%

Heating/cooling changeover temperature °C 16.0Length of heating season d 242Length of cooling season d 123

Facility characteristics Show data

Show: Heating Cooling ElectricityIncremental initial costs

Fuel cost savings

Incremental O&M savings Simple payback

Include measure?

Fuel saved GJ GJ GJ $ $ $ yrHeating systemBoiler 0 - - 0 0 0 -Cooling systemAir-conditioning - 0 - 0 0 0 -Building envelopeAppartment building 2,686 0 - 60,000 28,659 0 2.1VentilationLightsElectrical equipmentHot waterOtherTotal 2,686 0 0 60,000 28,659 0 2.09

Summary Show data

Fuel type

Fuel consumption -

unit Fuel rateFuel

consumption Fuel costFuel

consumption Fuel cost Fuel savedFuel cost savings

Natural gas m³ 0.400$ 160,194.2 64,078$ 88,546.3 35,419$ 71,647.8 28,659$ Total 64,078$ 35,419$ 28,659$

Project verificationFuel

consumptionFuel type Base caseNatural gas m³ 160,194.2

Heating Cooling Electricity TotalEnergy GJ GJ GJ GJEnergy - base case 4,204 0 0 4,204Energy - proposed case 2,324 0 0 2,324Energy saved 1,880 0 0 1,880Energy saved - % 44.7% 44.7%

BenchmarkEnergy unit kWhReference unit m² 7,500User-defined m² 2,000

Benchmark Heating Cooling Electricity TotalEnergy kWh/m² kWh/m² kWh/m² kWh/m²Energy - base case 155.7 0.0 0.0 155.7Energy - proposed case 86.1 0.0 0.0 86.1Energy saved 69.6 0.0 0.0 69.6

RETScreen Energy Model - Energy efficiency measures project

Base case Proposed case Fuel cost savingsFuel

Fuel consumption -

historical

Fuel consumption -

unit

Fuel consumption -

variance

Assignment: Lights - Compact Fluorescent Light &Electrical Equipment – Computer

Questions?

www.RETScreen.net


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