Overview

Case Study

Financials

Next Steps

Q&A

Carbon Crunch Challenge

42 Households, 10 Teams, 3 Towns

October kWh reduction◦ CCC Participants: 16.30%◦ All Weston Residents: 4.55%

November kWh reduction◦ CCC Participants: 9.87%◦ All Weston Residents: 2.51%

CCC 1.0 : Killing Watts

Average Overall Total Reduction◦ CCC Participants: 13.10%

◦ All Weston Residents: 3.56%

Average Net kWh Reductions ‘08-’09◦ CCC Participants: 275 kWh

◦ Weston Residents: 91 kWh

Total 2 Month Net kWh Reduced by all CCC Participants:

CCC 1.0 Made a Difference

12,651 kWh

≈ 8 Months of Demand for 1 Avg. Weston Household

Home heating & cooling systems account for 44% of the average home’s energy use

A 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 costs

Our Next Target: Home Heating

Goal: Reduce household heating energy used in January & February 2011 as compared to those same months in 2010

Process:1. Contact MassSave for a free Home Energy

Assessment2. Use the results to make changes3. Report your Jan & Feb heating oil or natural

gas use to the CCC organizers4. Save a lot of money & be happy

Carbon Crunch Challenge 2.0

Single-family home in Roslindale, MA* Blower Door & Infrared Inspection Performed by Byggmeister, Inc. October 7, 2008

The Case of David Carrier

* This isn’t his house, just a great IR picture

Attic & basement showed plenty of leakage

Wall insulation generally acceptable, although infrared shows coverage uneven

Major air leakage in an inner partition wall & kitchen ceiling

Fireplace flue did not seal well

General Observations

Tub access panel very leaky & cold with blower door running

Second Floor Bathroom

Should be air-sealed and insulated

Rim Joist Area in Basement

Registered lots of air movement; should be air sealed

Chimney Case

Air leak from second floor bathroom into bedroom through wall outlet

Cold Air Leaking through Outlet

Upgrade insulation & air-seal attic

Spray foam the band joist area around perimeter of basement

Air seal & insulate overhang under kitchen

Air seal & insulate behind 2nd floor tub

Listed 6 resources to help with insulation & air sealing work

Report Recommendations

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

Conceptual Model

Savings: 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.

Savings are more difficult to predict than capital costs and are building dependant

Typical 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

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-Other

Capital Cost Reduction

Incentives

Incentives can take multiple forms including:

-Rebates

-Below market financing

-Tax credits

-Other

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

Source: www.masssave.com

Incentives can take multiple forms including:

-Rebates

-Below market financing

-Tax credits

-Other

Incentives

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 loan

Only available for energy efficiency improvements

Incentives can take multiple forms including:

-Rebates

-Below market financing

-Tax credits

-Other

Incentives

Incentives Overview: Tax CreditFederal Tax Credit for 30% of qualifying

project cost up to $1,500 in 2010

Tax credit expires 12/31/10

Tax credit can only be used once (2008-2010)

Incentives

Incentives can take multiple forms including:

-Rebates

-Below market financing

-Tax credits

-Other

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.

Discounts & incentives can be a substantial portion of the total

project cost as shown in the hypothetical example below:

Other Discounts and Incentives:Other-Contractor Discount 1,125$ Financing-Present Value of Interest 1,400$

Project CostBoiler & Hot Water 11,250$ Insultation 3,000$ Total 14,250$

Rebates Incentive-Boiler & Hot Water 1,500$ -Insulation 2,000$ Total Rebates 3,500$ Tax -EE Tax Credit 1,500$ Total Incentive 5,000$

Net Cost 9,250$

Discounts & Incentives / Project Cost 35%

Other Considerations Rebates, tax credits and other incentives

fluctuate from year to year.

2010 incentives are very generous vs. history and may not be representative of future years

Potential legislation (example – Home Star)

www.masssave.com

www.dsireusa.org

Resources

1. Sign up as a CCC2 participant by emailing wcg.ccc@gmail.com Regular updates & support emails Events Progress tracking

2. Contact MassSave to schedule your Home Energy Assessment Call 1-866-527-7283 Lead time generally 2-3 weeks More info online: http://www.masssave.com/

Next Steps

Family 1

Family 2

Family 3 …

MassSave Contacted ✔ ✔ ✔

Energy Assess. Completed ✔ ✔

Workers Contacted ✔ ✔

Work Started ✔

Work Completed

Rebate Forms Submitted

Jan ‘10 & ‘11 Info Submitted

Feb ‘10 & ‘11 Info Submitted

Progress Tracking Example

From the first Carbon Crunch, youth want to be active participants:

◦ Identify types of energy used in your home

◦ Explain how to use energy in home more wisely

◦ Describe 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