RTF Small / Rural Subcommittee Wednesday, September 18, 9am – 10:30am

Agenda Review of recently approved UES measures Status of Schools Lighting and Barn Lights UES measure development Mobile Home Decommissioning Revisit priority list for 2013 Upcoming work plan items for 2014

Recently Approved UES Measures Review the UES design checklists for the measures approved between June 2013 and August 2013 RTF Meetings – June 18, 2013 Commercial Grocery - Anti-sweat Heater Controls (small saver) – (updated at the September RTF meeting, will be reviewed at December subcom meeting) – July 16, 2013 Commercial Showerheads (small saver) Commercial Cooking – Combination Ovens (small saver) Commercial Cooking – Hot Food Holding Cabinets (small saver) Commercial Cooking – Fryers (small saver) Commercial Cooking – Steamers (small saver) Commercial Cooking – Convection Ovens (small saver) Schools - Network Power Management (small saver) Grocery - Display Case Motion Sensor (small saver) – August 20, 2013 Residential - Advanced Power Strips (planning) Residential - LEDs (proven) Residential - Prescriptive Duct Sealing (planning)

Status of Schools Lighting and Barn Lights UES measure development Selected by subcommittee as top priority for 2013 work plan at June 11, 2013 meeting Sent Task Order to select firms on July 31, 2013 Received bids in early August Decided to separate Schools and Barn lights contracts based on contractor feedback Notified SBW of Schools Lighting contract award on 8/22/13 PECI Barn Lights contract awaiting final approval from this subcommittee – Projected fee of $12,424. Slightly higher than $10k estimate. Received request from BPA to reconsider Schools Lighting UES Measures at end of August 4

Status of Schools Lighting and Barn Lights UES measure development [BPA presentation on BPA Nonresidential Lighting Program updates, as they pertain to schools in Small/Rural utility territories] 5

Mobile Home Decommissioning measure Selected by S/R subcommittee for part of 2013 work plan at the June 11, 2013 meeting RTF staff subsequently received requests to scope the feasibility of this measure and discuss with the S/R subcommittee before pursuing a contractor 6

Mobile Home Decommissioning History Pre 1976 – Mobile Home – structures did not need to comply with building standards 1976 – HUD standard: Federal standards on design, construction, installation, and performance of homes: Mobile home >> Manufactured Home EE standards in the NW and Nationally – 1992 – 1995 Manufactured Homes Acquisition Program (MAP). – 1995 – present: Super Good Cents, NEEM (MAP specifications), Energy Star, Earth Advantage, Eco-rated 7

Mobile Home Decommissioning Regional Program Findings PNL 1995 – Impact Evaluation of Manufactured Housing Acquisition Program – Billing analysis of pre-MAP (baseline) and MAP (efficient case) homes – Straight comparison of bills: 200 – 2,300 kWh/year savings – Regression analysis: 2,900 to 5,270 kWh/year, after controlling for size, secondary fuels, and heat pump presence – Baseline homes: Were smaller Used more supplemental fuel Had more heat pumps Savings will depend on specifically what new home replaces specifically what old home. 8

Mobile Home Decommissioning Regional Program Findings Ecotope for Northwest Energy Efficient Manufactured Homes and Oregon Energy Department, Draft: Summary of NEEM Manufactured Home Field Data and Billing Analysis. – Treatment group only. Baseline = simulation of sampled homes with scaled down energy performance characteristics – 3,584 to 7,615 kWh/year 9

Mobile Home Decommissioning RTF Analysis Savings calculator for MH, ~2002 – 2,000 – 6,000 kWh/year from building shell even assuming new home is larger than existing home – More savings from upgraded HVAC equipment and MH EE specified equipment (e.g. lights, water heater) 10

Mobile Home Decommissioning 2012 RBSA 321 MH sampled across the NW Site audit and billing analysis ~25% of MH are pre-HUD (1976). About half of these are pre Observations – MH have gotten a lot bigger (from 1,000 ft 2 to 1,700 ft 2 ) – Heat loss rates decreased dramatically (from 0.52 UA/ft 2 to 0.17 UA/ft 2 ) – Homes are tighter (16.5 ACH50 to 4.8 ACH50) – Electricity is the primary heating fuel in 2/3 to ¾ of MH, except in Montana (17%) – About 10% of MH receive electric utility bill assistance – Energy consumption of pre-HUD and 1995-present HUD homes is comparable: improved energy efficiency has balanced increase in home size. 11

Mobile Home Decommissioning 2012 RBSA, Additional analysis by RTF staff 12 Heating CZ 1 Heating CZ 2

Mobile Home Decommissioning 2012 RBSA, Additional analysis by RTF staff 13 Heating CZ 3

Mobile Home Decommissioning 2012 RBSA, Additional analysis by RTF staff 14 Heating CZ 1 Heating CZ 2

Mobile Home Decommissioning 2012 RBSA, Additional analysis by RTF staff 15 Heating CZ 3

MH Decommissioning - Costs Average MH Cost in 2012, PNW States – Single Wide – $31K to $48K – Double Wide - $75K to $81K – Source: U.S. Census Bureau Incremental cost of Energy Star + – Source: Washington State University Energy Program and Habitat for Humanity, Cost Implications of Retrofit vs. Replacement of Manufactured Housing Survey of manufacturers Single wide - $5,500 Double wide - $6,400 – Source: RTF Energy Star and Eco-rated MH UES Build-up cost estimates $1,400 to $2,100 Cost to decommission a mobile home: – Single-wide: $4,000, Double-wide: $6,000 – ~30% cheaper if several MHs in same area are done at the same time – Asbestos: Even in older homes, its usually not an issue When it is, it can add $700 to $1000 to the cost. In the worst cases, it doubles the cost. – Source: Interview with WA vendor 16

MH Decommissioning – Remaining Useful Life RUL of existing MH: – Would these homes have been replaced naturally within the measure lifetime? This would affect measure cost considerably (full vs. incremental cost) – Research required to determine the decay rate of older mobile homes U.S. Census Bureau data exists, but is difficult to navigate/access 17

MH Decommissioning – Cost Effectiveness 18

MH Decommissioning – Cost Effectiveness No natural replacement 19 Single Double

MH Decommissioning – Cost Effectiveness With natural replacement (RUL = 10 yrs) 20 Single Double

MH Decommissioning - Making this measure work This measure would require significant funding support from other agencies Access to credit has been a large barrier to new MH purchasing – This measure would need to include considerable attention to financing 21

MH Decommissioning - Discussion Should the S/R subcommittee pursue this measure? – If so, proposed scope: Planning UES measure – Measure assessment with the following components » Savings – use high performance MH values » Cost – confirm scoping data compiled by RTF staff » Non-energy costs and benefits – identify and estimate quantifiable, monetizable costs and benefits » RUL – Use U.S. Census Bureau or other data to estimate the natural decay rate of older mobile homes. – Research plan » Data collection requirements necessary to develop a proven UES or Standard Protocol 22

2013 Work Plan Priorities Pursue Schools lighting UES measures? Pursue Mobile Home Decommissioning measure? [see 2013 priority list] 23

2014 Work Plan Current allocation in DRAFT workplan set at $40,000 – May increase or decrease depending on scope Continue following on priority list of UES measures identified in 2013? Are there additional measures to consider? Should finalize prior to December S/R meeting – RTF Work plan set to be final in November 24

Back-up Slides 25

Mobile Home Decommissioning 2012 RBSA 26

Mobile Home Decommissioning 2012 RBSA 27

Mobile Home Decommissioning 2012 RBSA 28

Mobile Home Decommissioning 2012 RBSA 29

Mobile Home Decommissioning 2012 RBSA 30

RTF Analysis of RBSA Data EUI has gone down, but home size has gone up. Not much change in kWh from pre-HUD to HUD. – For planning purposed, the RTF MH EnergyStar and Eco-rated measure savings may suffice. 31