Articles, Interviews and Awards
Electricity
KW and KWH
Explaination
ENERGY CONSERVATION
MEASURES
TYPICAL PAYBACK PERIODS *
|
COMMERCIAL ENERGY CONSERVATION MEASURES (ECMS) |
SIMPLE PAYBACK PERIOD (YEARS) | EQUIPMENT LIFE EXPECTANCY | |
| Energy Management System - new |
1 to 4 |
20 | |
| High Efficiency Motors & VFDs | 1 to 4 | 20 | |
| Steam Trap - replacement / repairs | 1 to 5 | ||
| Lighting Lamp & Ballasts - retrofit and controls | 2 to 5 | 20 | |
| Energy Management System - replacement | 2 to 6 | 15 | |
| Manufacturing Process - heat recovery | 2 to 5 | 15 | |
| Chiller - replacement | 5 to 12 | 25 | |
| Boiler - replacement | 8 to 30 | 35 | |
| Rooftop Unit HVAC - replacement | 9 to 15 | 20 | |
| Building Insulation - addition | 10 to 15 | - | |
| Roof Insulation - addition | 20 to 30 | - | |
| Windows - replacement | 15 to 50 | 40 |
* BUNDLING ECMs: Self-funded
Energy Management projects can utilize ECMs
with fast payback periods to pay for ECMs with longer
payback periods, if
this serves the customer's needs.
| RESIDENTIAL | SIMPLE PAYBACK PERIOD (YEARS) | ||
| ENERGY CONSERVATION MEASURES | SHORTEST | LONGEST | AVERAGE |
| Programmable thermostat | 1 | 2 | 1 |
| Air Leaks - small (sealed) | 1 | 2 | 2 |
| Air Leaks - large (sealed) | 1 | 2 | 2 |
| Duct work (sealed) | 1 | 2 | 2 |
| Insulation - water heater | 1 | 3 | 2 |
| Showerhead - water saving | 1 | 3 | 2 |
| Heating system - tune up | 1 | 3 | 2 |
| Insulation - floors | 2 | 5 | 4 |
| Insulation - ceiling | 3 | 7 | 5 |
| Landscape - shading | 7 | 10 | 9 |
| Insulation - walls | 6 | 12 | 9 |
| Heating system - replacement | 5 | 20 | 13 |
| Window - replacement | 12 | 30 | 21 |
Characteristics of
common
lighting sources
(LINK)
...........................................................................................
ENERGY EFFICIENCY
is the country's best source
for additional energy supply