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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)

 

 

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ENERGY EFFICIENCY
is the country's best source
 for additional energy supply