Northwest Power and Conservation Council Small Office Savings Analysis Package w/ Lighting Measures Only RTF March 25, 2008

Northwest Power and Conservation Council slide 2 Analysis Approach Based on previous analysis for full package Based on previous analysis for full package Removed non-lighting measure savings & cost Removed non-lighting measure savings & cost –Rooftop HVAC Cx –Glass, Fan Power, CEE Tier 2 HVAC Equipment Retain only two lighting measures Retain only two lighting measures –Lighting Power Density at 0.75 w/sf –Occupancy control for open areas Reduced cooling capacity cost savings Reduced cooling capacity cost savings –Capacity credit reduced to 4 tons instead of 7 tons

Northwest Power and Conservation Council slide 3 Reference Case - Electric Site Savings With All Measures Save about 2 kWh/sf

Northwest Power and Conservation Council slide 4 Electric Savings LIGHTING-ONLY Package : Cut Savings by about Half

Northwest Power and Conservation Council slide 5 Measure Cost Estimates But Also Remove About Half the Cost

Northwest Power and Conservation Council slide 6 Package TRC Cost-Effectiveness Reference Case - All Measures

Northwest Power and Conservation Council slide 7 Package TRC Cost-Effectiveness LIGHTING-ONLY Measures

Northwest Power and Conservation Council slide 8 Recommended Savings Estimates For LIGHTING ONLY Package (in kWh/sf)

Northwest Power and Conservation Council slide 9 Spare Slides

Northwest Power and Conservation Council slide 10 Window Baseline Assumptions

Northwest Power and Conservation Council slide 11 Weighted Savings & B/C TRC B/C Ratio 1.2 TRC B/C Ratio 1.2 Savings: 2.0 kWh/sf site and 2.1 kWh/sf at bus bar Savings: 2.0 kWh/sf site and 2.1 kWh/sf at bus bar Weighting Factors: Weighting Factors: –Commercial Valuation from FW Dodge –HVAC System type & heat fuel for < 100ksf from CBSA & NEEA –Code jurisdiction for window baseline & savings

Northwest Power and Conservation Council The End