1. Northwest Power Planning Council Residential Sector Conservation Resource Assessment Summary of Draft Resource Assessment Results March 18, 2003

2. Northwest Power Planning Councilslide 2 Scope of Assessment Three Building Types Three Building Types –Single Family (up to & including 4-plex) –Multifamily (5-plex & above) –Manufactured/Mobile Homes Three Vintages Three Vintages –Pre-1980 –1980 – 1992 –Post-1992 (= 1983 MCS level construction)

3. Northwest Power Planning Councilslide 3 Space Conditioning Measures/Technologies & Practices Thermal Shell Improvements Thermal Shell Improvements Duct Sealing Duct Sealing Heating System Conversions to Air-Source Heat Pumps Heating System Conversions to Air-Source Heat Pumps Heat Pump and Central Air Conditioning System Efficiency Upgrades Heat Pump and Central Air Conditioning System Efficiency Upgrades

4. Northwest Power Planning Councilslide 4 Non-Space Conditioning Measures/Technologies & Practices Water Heating Water Heating –Heat Pump & Solar Water Heaters –Efficient Tanks –Waste Water Heat Recovery Lighting Lighting Major Appliances Major Appliances –Dishwashers –Clothes Washers –Refrigerators –Room Air Conditioners

5. Northwest Power Planning Councilslide 5 Residential Sector Conservation Supply Curve

6. Summary of Residential Sector Conservation Resource Potential by Major End Use

7. Summary of Residential Sector Conservation Resource Potential for Appliances 290 aMW 15 aMW 5 aMW

8. Summary of Residential Sector Conservation Resource Potential for Water Heating 95 aMW 225 aMW 15 aMW

9. Summary of Residential Sector Conservation Resource Potential for Space Conditioning 160 aMW 125 aMW 80 aMW 40 aMW 150 aMW 5 aMW 20 aMW