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You can contact us by phone, email or post. Our contact information:

Mass. Interfaith Power & Light
14 Collins Road
Waban, MA 02468

Phone: 617-244-0755



at Your House-Of-Worship

Houses-of-Worship are among the absolute worst sources of waste and inefficiency imaginable. But there is hope. Read these stories of houses-of-worship that made huge strides in reducing energy use and offsetting remaining use and prompting environmental responsibility in their community.


Eliot Church NewtonFirst Congregational Church, Stoneham

A full suite of efficiency improvements yielded carbon dioxide reductions of 63 metric tons per year and cost savings of $25,000. Since then Stoneham installed a 35 kW solar PV system with innovative incentives for members to do likewise in their homes..

Eliot Church NewtonEliot, Newton

EPA Energy Star designation;
New Solar PV provides 98% of electricity &
Community engagement for system change.

St. Brigid'sSt. Brigid's, Lexington

Annual energy savings of $42,133 and carbon dioxide reduction of 52.99 metric tons by insulating, and installing a high-efficiency gas-fired hydronic heating system in the church and parish hall. St. Brigid's also installed high efficiency lighting.

St. Dunstan'sSt. Dunstan's, Dover

A 23.1 kW solar photovoltaic system yields a 50% reduction in carbon footprint. They also adopt Interfaith Power & Light's Paris Pledge to be carbon neutral by 2050!

St. Matthew'sSt. Matthew's, Acton

Insulation and behavior changes at St. Matthew's Acton lower carbon dioxide emissions 22%.

Trinity, TopsfieldTrinity (Episcopal), Topsfield

Over 50% savings on heating and DHW. A key lesson — Don't Go It Alone!

South ChurchSouth Church, Andover

South Church generates 92% of the electricity it needs with a solar photovoltaic system financed by a power purchase agreement, (PPA). And in a locally designated historic district to boot!

St. Andrew's Wellesley

St. Andrew's, Wellesley

Reductions in CO2 emissions and energy costs

Charles St. AME church Charles Street AME Church, Roxbury

On December 5, 2009 congregation members, MIP&L volunteers, and professionals from Next Step Living interior "storm" windows, and insulated walls and the basement door. They installed CFLs, lowered water use via faucet aerators and lo-flow showerheads, and adjusted the hot water temperature to "just right" to lower cost of gas to heat the water.

Green Needham CollaborativeIn Needham, lots of congregations are "getting it"!!!!

Houses-Of-Worship are being greened.  And the members are taking it to heart and making it happen in their homes.

Read about their efforts:

Temple Beth Shalom's switch to high-efficiency boilers is resulting in about $3,500 reduction in heating cost.

The Congregational Church of Needham is projecting a 15% saving on the electric bill just from the "low-hanging" fruit, the installation of CFL light bulbs.

And consider First Parish (UU), which did a huge amount of work on its building. New heating, major reconstruction, lots and lots of insulation, and high-efficiency boiler and domestic hot water is bringing costs down as much as 50%, and that with a building that is 25% bigger and better!!!

And the community — as well as the HOWs — are being helped by the Green Needham Collaborative. Its 10% Energy Challenge  encourages households to sign up to reduce their household energy consumption by at least 10%. Click here to learn more about the collaborative.

Boston Synagogue

Boston Synagogue

During 2009 Boston Synagogue reduced their carbon dioxide emissions by 70 %, from over 200,000 lbs to just over 80,000 lbs. Their annual energy costs decreased by 57 % during this period, to about $6,800 as compared to about $15,750. Also, their annual repair and maintenance bills dropped significantly. As a result,the estimated payback time on their capital investment is approximately 5 years.

Holy TrinityHoly Trinity Armenian Apostolic Church, Cambridge

In-floor radiant heating puts heat where the people are, with their feet on the floor. To make things better, the congregation upgraded to high-efficiency boilers, with a 40% drop in cost for heating! 

St. James, Cambridge, MASSCambridge is Green trail-blazing! You can see MIP&L's contribution (and the wonderful new boiler room at St. James, Cambridge) on the clip from the recently-aired PBS NOW program.

Click here to see the clip.

Click here for a PDF of the report.

Cathedral of St. Paul

Cathedral of St. Paul/Episcopal Diocese


All Saints Parish

All Saints Parish, Brookline

Over 35% reduction in electricity use just by LEDs in sanctuary!.

St. Paul's Dedham

St. Paul's, Dedham

Address heating and lighting

Trinity canton

Trinity Church, Canton

Cost/benefit analysis of boilers

st. john's westwoodFirst Parish & St. John's, Westwood

Solar energy works! Sun Power for the Town of Westwood has shown that a community can pull resources together to create a sustainable future for their residents.


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Mass. Interfaith Power & Light is a non-profit organization that provides a religious response to climate change. Our mission is to: Assist faith communities, their members and the public to decrease their carbon dioxide emissions & energy costs; educate people on why climate change is a matter of morality and justice; and advocate for policies that will lead to a sustainable future.