Data from Ohio Multi-Measure Residential EE Programs Merrian Borgeson Lawrence Berkeley National Laboratory August 2, 2012

Agenda The “offer” from each program EE measures installed # of audits & # upgrades Discussion 2

7 Programs Surveyed Vectren Dominion East Ohio First Energy Duke Energy AEP Ohio Columbia Gas of Ohio Greater Cincinnati Energy Alliance 3

Installed Measures Columbia Gas of Ohio Dominion East Ohio Greater Cincinnati Energy Alliance VectrenFirstEnergyDukeAEP Ohio During initial home visit Showerheads and a programmable thermostat. Some caulking, foam insulation, door sweeps, weather stripping, furnace filter, low flow shower head, and kitchen/bath aerators none6 CFLs, 1-2 showerheads, faucet aerators, programmable thermostat, water heater blanket (if electric) and water heater pipe wrap CFLs, faucet aerators*, pipe wrap*, and low flow showerheads* *if the customer has an electric hot water heater CFLs, low flow shower head, low flow faucet aerators, outlet/ switch gaskets, weather stripping and energy saving tips booklet CFLs, programmable thermostat, LED night light, and (if electric), two energy efficient shower heads, two faucet aerators, and six feet of pipe insulation Cost to customer “Assisted” pays $20, “Standard” pays $50. $50, refunded if they do additional work $100$50, refunded if they do additional work $100FreeFree online audit $25 in-person walk- through audit $50 in-person diagnostic audit for all electric homes Most common additional work Attic and wall insulation, air sealing Furnace replacement, air sealing, and insulation Air sealing, insulation, HVAC (a lot of geothermal) Air sealing required in all packages; attic insulation Wall/roof insulation and ENERGY STAR windows n/aECM motors on HVAC equip., attic insulation, high efficiency air conditioning, programmable thermostats, high efficiency heat pumps Average cost to customer $250 for Assisted insulation & air sealing + furnace replacement; $1000 on average for Standard $5000$8000$1,000Varies n/aVaries

Homes Touched 5 Columbia Gas of Ohio Dominion East Ohio Greater Cincinnati Energy Alliance VectrenFirstEnergyDukeAEP OhioTOTALS # homes evaluated 2012 (to date) # homes evaluated # homes evaluated Total evaluated # homes upgraded in 2011 (% converted) 609 (23%)1364 (72%)*483 (55%) 5 (3.5% --> just started 269 (25%) n/a1878 (49%) 4608 # homes upgraded in 2010 (% converted) 3928 (60%)758 (25%)436 (51%) 2 (<1%) n/a1889 (27%) 7013 # homes upgraded in 2009 (% converted) 3293 (66%)1 (<1%)76 (19%) n/a Total upgraded * Likely some upgrades carried over from 2011 audits - program reports a 40% conversion rate in 2012

Discussion What do these numbers say about the impact of and potential for residential EE in Ohio? What seems to be working well? What is holding existing programs back? What are the opportunities for coordination between programs? 6