Measures that Save The Most Energy. Jackie Berger David Carroll ACI New Jersey Home Performance Conference January 25, 2007. Session Outline. Introduction Key Concepts Projected Savings vs. Measured Savings Average Savings by Type of Measure Energy Education Savings Potential
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ACI New Jersey Home Performance Conference
January 25, 2007
= Measure Installation Rate *
Measure Retention Rate *
(Pre Installation Usage – Post Installation Usage)
= 60 watts * .001 = .06 kWh
= 13 watts * .001 = .013 kWh
=.06 - .013 = .047 kWh
= .047 kWh * 2.5 hours/day
= .1175 kWh/day
= . 1175 kWh/day * 365 days
= 43 kWh/year
= 43 kWh * 8 bulbs
= 344 kWh
= 344 kWh *.8
= 275 kWh saved per home per year
So simple, what could go wrong…
How far are we off with the projections?
Source: M. Blasnik and Associates.
Usage change = α + β * household characteristics + γ1* measure1 + γ2* measure2 + γ3* measure3 + μ
AC – 72 to 75 degrees, heating 72 to 70 degrees