1. RETScreen® Energy Efficiency Projects

2. Facility Types Commercial & Institutional Buildings
Both New & Existing Facilities
Houses & Apartment Buildings
Industrial Plants & Processes
Photo: NRCan
Photo: NRCan

3. Energy Efficiency Analysis
Fuel
End-use
Optimize supply
Maximize
efficiency
Minimize
usage
Steps

4. RETScreen Energy Efficiency Model
Base case vs. proposed case
Steps:
Fuel & schedules
Facility characteristics (energy + costs)
Summary (energy)
Emission analysis
Financial analysis

5. 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

6. Facility Characteristics
Heating system
Cooling system
Building envelope
Ventilation
Lights
Electrical equipment
Hot water
Pumps
Fans
Motors

7. Facility Characteristics
Process electricity
Process heat
Process steam
Steam losses
Heat recovery
Compressed air
Refrigeration
Other

8. Summary Section
Fuel summary
Project verification
Benchmark

9. Emission & Financial Analysis
Method 1
Method 2

11. Project Example: 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

12. Questions?