Incremental Cost Assessments&

Duct Sealing Optimization Project

Bobbi Wilhelm

March 25, 2008

Three Studies with Regional Interest

Market Cost Assessment of Residential Appliances, HVAC Systems, and Water Heating Equipment

Cost Assessment of Commercial New Construction and Retrofit Efficiency Measures

Residential Duct Sealing Program Optimization Study

Incremental Cost Assessment

More reliable measure cost data for both high efficiency and standard equipment

Better estimate of Incremental Costs

Assist with cost-effectiveness calculations

Help with measure funding calculations

Residential Cost Assessment Progress

RFP sent in January; Proposal gathered March 5th

Best practices for obtaining measure costs and recommended approach

Interview plans and interview guides

Conduct a market cost assessment of specific residential measures

Conduct an assessment of contractor stock of efficient equipment

Sample

Proposal: Residential Cost Assessment

Best Practices

Research instrument development and implementation for each source of cost data.

Protocols for research activities, including surveys and the identification and use of secondary sources.

Data quality and management including

Proposal: Residential Cost Assessment

Incremental Cost & Stock Assessment

Sample:

196 Contractors

12 Distributors

207 Retail Chains

Cost Assessment Approach

Simple Average by Measure

Weighted Average by Measure

Hedonic Price Model by Measure

Commercial Cost Assessment

Request for Proposals

Development of SOW is underway

Identified a wish list of measures to be assessed

Looking for partnering utilities to review SOW and assist with funding

Finalize Scope by April 15

Duct Optimization Project

Maximize energy savings and minimize costsCompare Thee Sealing procedures

Duct Blaster test; sealing to PTCS protocol

Duct Blaster test; sealing to 50% leak reduction

Delta Q test; seal only high pressure leaks

Obtain lost opportunity, cost, and savings

Seal to current PTCS protocol (Duct Blaster)

Current PSE Program – 50% leak reduction (Duct Blaster)

Seal only high pressure leaks (Delta Q)

Duct Sealing Optimization Project • Scope of Work Complete

Field Work Begins this month

Two Groups of homes; 20 homes each

Group One:

•Tested with Duct Blaster and Delta Q

•Sealed to 50% leak reduction (Duct Blaster)

•Second Test

•Sealed to PTCS

•Final Test

Group Two:

•Tested with Duct Blaster and Delta Q

• High Pressure leaks sealed (Delta Q)

•Second Test

•Sealed to PTCS

•Final Test

Regional Partnerships

Incremental Cost Assessments:

Bobbi Wilhelm, Puget Sound Energy

425-462-3432 bobette.wilhelm@pse.com

Duct Sealing Optimization Study:

Bruce Manclark, Delta T

541-517-5779 brucemanclark@gorge.net