This document discusses the results of the Carbon Crunch Challenge program in Weston, Massachusetts and next steps for a second challenge. It provides the following key information: - The first Carbon Crunch Challenge resulted in participants reducing their energy use by 13.1% on average from October to November 2008 compared to 3.6% for all other Weston residents. - Home heating and cooling accounts for 44% of energy use on average. A 20% reduction in this area would decrease overall household energy use by almost 9%. - The second Carbon Crunch Challenge will focus on reducing household heating energy from January to February 2011 compared to the same period in 2010. Participants are encouraged to get a home energy assessment and

2. OverviewCase StudyFinancialsNext StepsQ&ACarbon Crunch Challenge

3. 42 Households, 10 Teams, 3 TownsOctober kWh reductionCCC Participants: 16.30%All Weston Residents: 4.55%November kWh reductionCCC Participants: 9.87%All Weston Residents: 2.51% CCC 1.0 : Killing Watts

4. Average Overall Total ReductionCCC Participants: 13.10%All Weston Residents: 3.56%Average Net kWh Reductions ‘08-’09CCC Participants: 275 kWhWeston Residents: 91 kWhTotal 2 Month Net kWh Reduced by all CCC Participants: CCC 1.0 Made a Difference12,651 kWh≈ 8 Months of Demand for 1 Avg. Weston Household

5. Home heating & cooling systems account for 44% of the average home’s energy useA 20% reduction decreases overall household energy use by almost 9%Home energy assessments usually identify reduction opportunities of 20-30%That’s a saving of roughly $600-900/year, every year, based on average annual heating costsOur Next Target: Home Heating

6. Goal: Reduce household heating energy used in January & February 2011 as compared to those same months in 2010Process:Contact MassSave for a free Home Energy AssessmentUse the results to make changesReport your Jan & Feb heating oil or natural gas use to the CCC organizersSave a lot of money & be happyCarbon Crunch Challenge 2.0

7. Single-family home in Roslindale, MA*Blower Door & Infrared InspectionPerformed by Byggmeister, Inc.October 7, 2008The Case of David Carrier* This isn’t his house, just a great IR picture

8. Attic & basement showed plenty of leakageWall insulation generally acceptable, although infrared shows coverage unevenMajor air leakage in an inner partition wall & kitchen ceilingFireplace flue did not seal wellGeneral Observations

9. Tub access panel very leaky & cold with blower door runningSecond Floor Bathroom

10. Should be air-sealed and insulatedRim Joist Area in Basement

11. Registered lots of air movement; should be air sealedChimney Case

12. Air leak from second floor bathroom into bedroom through wall outletCold Air Leaking through Outlet

13. Upgrade insulation & air-seal atticSpray foam the band joist area around perimeter of basementAir seal & insulate overhang under kitchenAir seal & insulate behind 2nd floor tubListed 6 resources to help with insulation & air sealing workReport Recommendations

14. Returns to energy efficiency are measured as the sum of averted energy expenditures verses the capital cost to implement over the useful life of an improvement.Economics of Energy Efficiency

15. Conceptual ModelSavings: Informed by Energy Assessment and determined by the change in equipment efficiency (new vs. old), the relative consumption impacted and a host of other factors including weather, fuel prices, behavior, etc.Costs: Capital costs are driven by the choice of efficiency measures and offset by rebates, financing opportunities, tax credits, etc.

16. Savings are more difficult to predict than capital costs and are building dependantTypical savings in residential retrofits average 25% of energy costs, or ~$600.Larger energy users or less efficient homes may see larger savings.Home Energy Assessments are a good tool to understand current use and expected/potential savings.Predictions

17. Capital Costs are generally known in advance and can be significantly reduced through available incentives:Incentives can take multiple forms including:-Rebates-Below market financing-Tax credits-OtherCapital Cost Reduction

18. IncentivesIncentives can take multiple forms including:-Rebates-Below market financing-Tax credits-Other

19. Incentives Overview: RebatesOffered through the utility on qualifying energy efficiency improvements across a wide array of efficiency products.Substantial rebates exist on:-HVAC (up $1,000)-Hot Water (up to $700)-Insulation (75% up to $2,000)-Other (thermostats, boiler resets, etc.)-Financing (0% Interest)Incentive details can be found at:www.masssave.com

20. Source: www.masssave.com

21. Incentives can take multiple forms including:-Rebates-Below market financing-Tax credits-OtherIncentives

22. Incentives Overview: FinancingThe HEAT Loan program offers 0% loans up to $15,000 for households with good credit for terms up to 7 years.Home assessment is a precondition of the loanOnly available for energy efficiency improvements

23. Incentives can take multiple forms including:-Rebates-Below market financing-Tax credits-OtherIncentives

24. Incentives Overview: Tax CreditFederal Tax Credit for 30% of qualifying project cost up to $1,500 in 2010Tax credit expires 12/31/10Tax credit can only be used once (2008-2010)

25. IncentivesIncentives can take multiple forms including:-Rebates-Below market financing-Tax credits-Other

26. Other Ways to Reduce Capital CostsThere are other ways to lower the capital cost of energy efficiency including bidding work during seasonally slow periods and/or soliciting multiple bids.Example – Ask your heating system contractor if they offer discounts during the seasonally slower summer season.

27. Discounts & incentives can be a substantial portion of the total project cost as shown in the hypothetical example below:

28. Other ConsiderationsRebates, tax credits and other incentives fluctuate from year to year.2010 incentives are very generous vs. history and may not be representative of future yearsPotential legislation (example – Home Star)

29. www.masssave.comwww.dsireusa.orgResources

30. Sign up as a CCC2 participant by emailing wcg.ccc@gmail.comRegular updates & support emailsEventsProgress trackingContact MassSave to schedule your Home Energy AssessmentCall 1-866-527-7283Lead time generally 2-3 weeksMore info online: http://www.masssave.com/Next Steps

31. Progress Tracking Example

32. From the first Carbon Crunch, youth want to be active participants:Identify types of energy used in your homeExplain how to use energy in home more wiselyDescribe how to keep you home comfortable yet use less energy; check basement, attic, chimney,…Find air leaks from windows, doors and electrical sockets…Youth Participation