MVP House in Montana

Energy Savings and Costs

March 2nd, 2009Regional Technical Forum

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Previously Approved Specifications

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Previously Approved Specifications(continued)

Reminder: Specs were approved at the January 6, 2009 RTF meeting

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Energy Savings Method and Assumptions

• Method: SEEM Runs• SEEM Input Assumptions:

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• Dishwasher (31 kWh/year)– Baseline = 2010 Fed Min Std (355 kWh/yr; 6.5 gal/cycle)*– Upgrade = 2009 Energy STAR Std (324 kWh/yr; 5.8 gal/cycle)**– Included Water/Wastewater Plant Energy Savings

• DHW

– Gross Savings modified by: • Space Heat Interaction - based on foundation-type-specific heating system

efficiency• Space Cool Interaction based - on average estimated cooling efficiency

Energy Savings Assumptions (cont)

*6th Plan assumes baseline is 348 kWh/yr, with a reverse engineered water use of 5.3 gal/cycle.** Standard goes into effect August 11th, 2009. 5

Cost Assumptions

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Measure Life Inputs

• Shell and HVAC measure savings are combined, so used a “melded” value of 45 years.– Single family new construction shell measures are typically 70 years– HVAC measures are typically 20 years

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Results

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Results

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Results

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Results

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El Fin• Questions?• Recommended Changes?

• RTF approval of energy savings and costs for MVP House in Montana?

• Next steps – BPA to review and approve savings and costs and decide

willingness to pay– Add MVP House in MT measures to the PTR– (April): Review baseline for OR, WA, ID; then develop

savings and costs.

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