ECMS

ENERGY CONSERVATION MEASURES

TYPICAL PAYBACK PERIODS *

ENERGY CONSERVATION MEASURES (ECMS)	PAYBACK PERIOD (YEARS)
Energy Management System - new	1 to 4
High Efficiency Motors & VFDs	1 to 3
Lighting Fixtures & Ballasts - retrofit	1 to 5
Steam Trap - replacement / repairs	1 to 5
Energy Management System - replacement	1 to 6
Manufacturing Process - heat recovery	2 to 5
Boiler - replacement	7 to 12
Chiller - replacement	8 to 12
Rooftop Unit HVAC - replacement	9 to 15
Building Insulation	10 to 15
Roof Insulation	20 to 30
Windows - replacement	20 to 50

* 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 MEASURE	SHORTEST	LONGEST	AVERAGE
Air Leaks - small (sealed)	1	2	2
Air Leaks - large (sealed)	1	2	2
Duct work (sealed)	1	2	2
Programmable thermostat	1	2	2
Insulation - water heater	1	2	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	16

Characteristics of common
lighting sources (LINK)

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