National Grid s Energy Efficiency Programs Pratt Institute January

National Grid’s Energy Efficiency Programs Pratt Institute January 7 th 2009 Bob Allgor CEM Senior Program Manager

National Grid is the second-largest utility in the U. S. w The largest distributor of Natural Gas in the northeast U. S. w Approximately 3. 4 million customers in New York, Massachusetts, New Hampshire and Rhode Island w Delivers electricity to approximately 3. 3 million customers w Massachusetts, New Hampshire, New York and Rhode Island w Manages the electricity network on Long Island under an agreement with the Long Island Power Authority w Serving 1. 1 million LIPA customers 2

National Grid’s Energy Efficiency Experience w Long, uninterrupted history of program delivery in the US – 20+ years w More than 4. 7 million National Grid customer projects completed, saving more than $3. 6 billion in energy costs w Programs saved customers over $250 million on an annual basis w Over $1 billion invested in efficiency w Programs have served as models for programs across the US w Current budget of $134 Million* (electric and gas) in New York, Massachusetts, New Hampshire and Rhode Island * Excludes LIPA’s $46 Million Efficiency Program Budget 3

National Grid Gas Program List Residential Programs Low Income (NY, LI, MA, NH) / Energy. Wise – RI Weatherization High Efficiency Heating / High-Efficiency furnaces and boilers can save 25% to 40% on annual fuel bills as well as reducing air pollution. Performance Energy Star Products Energy Star Homes Online Home Analyzer Building Practices / Demonstration 4 90 AFUE Weatherization Seal penetrations through roof & ceiling Caulk & weatherstrip between walls & roof/ceiling Water Heating Energy Audit / Home Classic Rheem Caulk & seal all vents, exhausts and penetration through building envelope Caulk & weatherstrip doors & windows Use sill insulation or sill sealer Water Heater

Basics of SHW w Closed loop – Use anti freeze or temp controlled drainbacks w Open loop – Pool systems w Drainback – Temp sensors drain water before freezing w Antifreeze protection 5

SHW Components 6

Flat Plate Collectors w Lower cost w May have lower output w Items contained in the “box” w Has been around for many years w Very common systems 7

Evacuated Tube Collectors w Higher purchase cost w Higher output w May need to dump summer heat w Newer to the market w Performs well in overcast and cool temperatures 8

Performance w Many variables include system type, tilt, azimuth, water inlet and output temp, etc. w Averages - Flat plate collector provides 700 BTU’s per sq. ft. & evacuated tubes offer 1, 200 BTU’s per sq. ft. w Family of four equals a two panel system or 60 tubes 9

Performance…again w Total= 80 gallons / day w Water Temp in /55°F - Temp Desired / 113°F w Water Temp Rise Required = 58°F w 80 gallons x 8. 34 lbs. = 667. 2 lbs of water w 667. 2 x 58°F = 38, 697 BTU’s needed / day w Two 4’ x 10’ panels = app. 50 sq. ft copper w 50 sq. ft. x 950 BTU’s = 47, 500 BTU’s (ideal conditions) 10

Performance…again w 100, 000 BTU’s / 47, 500 x 1. 60 =. 75 cents per day saved x 365 days = $273 per year w $8, 000 Cost to buy w $4, 587 NGrid Rebate, Fed & NYS Tax Credits w $3, 087 Net cost w $ 273 Value of annual production w 11 11. 3 Very simple yearly payback

Costs Many variables, but expect: w One panel systems at $6, 000 to $8, 000 w Two panel systems at $8, 000 to $10, 000 w These are for complete systems of panels, tank, wiring, labor, permits etc. w Adhere to local jurisdiction rules 12

Residential Solar Thermal Rebates w Must be a National Grid gas hot water heating customer w Rebates are offered only for domestic water use. Solar pool heating is not eligible. w Must follow Solar Rating Certification Corp. (SRCC) / OG-300 ratings w Rebates are (up to 15%) or $1, 500 13

Commercial / Industrial Solar Thermal Rebates - Space Heating (Radiant, Pre-Heat, Integrated Domestic Hot Water) - Process Hot Water (Industrial & Food Processing) - Solar assisted Cooling (Absorption Cooling) - Must pass the B/C test w Space Heating and Other Projects - Engineering Grants available up to $10, 000 w Solar Thermal - $3/therm first year savings; LIMIT 50% project cost or $100, 000 14

Tax Credits Federal w Residential – (Domestic use only) up to 30% of net costs up to $2, 000 w Commercial – 30% of net costs with no $ cap & IRS Accelerated Depreciation w Real Property Tax Law New York State w Residential - (Domestic use only) up to 25% of net costs up to $5, 000 w Commercial – No credits 15

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National Grid will continue its focus on… • Helping all customers embrace energy efficiency … it’s a win/win value proposition – a healthier environment for all communities • Promoting the benefits of high-efficiency natural gas as a means for customers to take personal action to reduce greenhouse gas (GHG) emissions in their homes and businesses • Working with equipment manufacturers to encourage research and development of promising high-efficiency technologies and stimulating market transformation 21

Residential Program Contact Information Residential – Gas w Residential Incentive Programs w Call 1 -800 -292 -2032 w To Schedule a Home Audit w Call 1 -800 -860 -0815 w Find out more information on www. thinksmartthinkgreen. com 22

C&I / Multifamily Program Contact formation Commercial / Multifamily – Gas w Commercial / Multifamily Incentive Programs and to schedule an Energy Audit w Call 1 -800 -843 -3636 w Find out more information on www. thinksmartthinkgreen. com 23