High Performance Manufactured Homes

1. High Performance Manufactured Homes Project Sponsor: Bonneville Power Administration Presentation by: Ben Larson, Ecotope and Tom Hewes, Northwest Energy Works Active UES Proposal Presentation to the Regional Technical Forum April 17, 2012

2. Measure Summary • Measure name: High Performance Manufactured Homes (HPMH) • Measure sponsor: Bonneville Power Administration • Measure description: • Construction of and installation of lighting and appliances in new, manufactured homes in accordance with the High Performance Manufactured Home Specification Measure type: UES • Requesting Status: Approved • Change in measure status: Yes (proposed  active) • Change in measure savings: No • Change in measure cost effectiveness: No • Other or follow-on work for RTF: No

3. Background: NEEM Program(Northwest Energy Efficient Manufactured Home) • Built on a 25 year history of partnership with regional utilities • Support the promotion of energy efficient manufactured homes • NEEM is a joint energy efficiency program between the regions utilities and the regional manufactured home industry • The region’s 10 HUD (Manufactured home) and Modular (factory-built to local code) prefab builders build to NEEM specs • NEEM is supported by 74+ utilities in the PNW and California • NEEM has a set of factory quality management procedures and inspections • Northwest Energy Works (NEW), NEEM central administrator

4. Problem Statements: Motivating a new Program • NW has been focused on manufactured housing market for over two-decades • Over 155,000 or 68% of all new manufactured homes built since 1989 have constructed to high efficiency standards • Despite a $1000 per home corporate tax credit for Energy Star, little market transformation has occurred outside PNW • Market transformation progress in the PNW is sliding due to market pressure from outside the region

5. The HPMH Project HPMH development funded by Bonneville Power Administration Goals of the project are to get deep energy savings in this housing sector Program to be integrated into the existing NEEM infrastructure Proposed Approach Develop a specification to address all aspects of home energy use Provide a forum for regional equipment initiatives Develop a new market for manufactured homes Provide large, cost-effective, electric savings

6. Baseline in the Absence of NEEM • NEEM participation dropped significantly at the end of MAP, and Energy Star participation elsewhere in the country has rather minimal market share in the absence of incentives. • Therefore, the baseline is likely to contain no EnergyStar houses and only contain current market (non-NEEM) standard practice

7. Uo Baseline Specifications • Uo is the coefficient of heat transmission for the entire structure • (Btu/hr-ft2-°F) • Conductivity per square foot of building envelope • Not including infiltration and ventilation • “HUD+” is the current NW baseline based on current market research by WSU and NEW

8. Manufactured Homes Specifications Overview

9. UES Analysis SummaryRefer to Measure Workbook

10. Analysis Approach (1) • Lighting calculated with LPD method • Appliance savings from existing RTF measures • Calibrated SEEM runs for estimating • heating, cooling, ventilation, and DHW • DHW energy use • Parallel analysis to HPWH presented in 2011

11. Analysis Approach (2) • Heating, cooling, ventilation, and DHW energy use calculated with SEEM • DHP Modelingmethodology from NEEA Ductless Heat Pump Impact & Process Evaluation: Field Metering Report • Field findings: DHP heats differing house fraction based on climate • HZ1: 74%, HZ2: 63%, HZ3: 45% • Calibrated SEEM to pre/post DHP installation periods at 91 houses • Unique simulations created for each house based on detailed audits • Note: energy uses here not reflective of DHP program savings – they are only applicable here as a calibration exercise • HPWH Modelingbased on SEEM simulated annual crawl space temperature profile and HPWH COP map • HPWH installed in sound-attenuated, buffered closet which draws air from crawl space and exhausts outdoors

12. Measure Cost, Life, and Sunset Criteria • Total Package Cost 2006 $s: $9,205 • See workbook “CostSummary” & “CostData” tabs • Measure Life: ~36-39 years • Shell: 45 years • DHP: 20 years • Ventilation Fan: 20 years • DHW: 15 years • Lights: 7.6 years • Appliances: 16 years • Sunset Criteria: • Measure shall sunset at the end of 2013, at which time the lighting savings UES component of the measure shall be reevaluated against the changing federal lighting standards.

14. Results

16. Energy Use, Savings, and B/C Ratio

18. Energy Use by Load • Significant reductions in space heating, water heating, and lighting over both “HUD+” baseline and NEEM. • Big savings from • wall sheathing, • triple-glazed windows, • DHPs, • HPWH, and • lighting improvements

20. Motion for Approval “I _________ move that the RTF approve the UES for High Performance Manufactured Homes with provisional status which will sunset at the end of 2013.”

21. Contacts • Northwest Energy Works Tom Hewes tom@northwestenergyworks.com 888.370.3277 x101 Brady Peaks brady@northwestenergyworks.com 888.370.3277 x102 • Bonneville Power Administration Mark Johnson mejohnson@bpa.gov 503.230.7669 • Ecotope Ben Larson ben@ecotope.com 206.322.3753 x207