HEET

HEET

Home Energy Efficiency Team

Boston, Massachusetts, United States

GeothermalNon-profit
Profile last updated: May 4, 2026

About

HEET is a non-profit headquartered in Boston, United States specializing in Geothermal.

HEET is a nonprofit thermal energy innovation hub and climate solutions incubator based in Boston. It promotes a transition from gas utilities to thermal utilities, delivering heating and cooling through networked ground-source heat pumps, also known as networked geothermal or thermal energy networks. HEET's work also covers methane leak research and policy, home energy efficiency and solar programs, workforce development, and equitable energy transition advocacy. It is a small, independent, non-partisan organization that does not accept funding from utilities or industry.

Headquarters

Boston, United States

Company type

Non-profit

Focus areas

networked geothermalthermal energy networksgas to geomethane emissionsgas leaksenergy efficiencysolarenvironmental justicepolicy advocacynonprofit

Products & services

Value chain

R&DAdvisoryCommunity Engagement

Service areas (1)

  • Thermal energy transition advocacy and research

    Policy advocacy, research, and community programs advancing networked geothermal and reduction of gas leaks and methane emissions.

Locations

Headquarters

Milk Street 50, 02109, Boston, Massachusetts, United States

Service regions

United States

Projects

3

Networked geothermal installation in Framingham

Under ConstructionNetworked geothermal

First utility-owned networked geothermal system in the US, installed by Eversource Gas, where ground has been broken.

Framingham, United States

Cambridge Solar Challenge

OperationalRooftop solar PV

Program to help Cambridge homes install residential photovoltaic panels, with a negotiated 20% discount and direct outreach.

Cambridge, United States

Somerville Solar Challenge

OperationalRooftop solar PV

Replication of the Cambridge Solar Challenge program in Somerville, resulting in 20 solar installations.

Somerville, United States

Credentials & affiliations

Awards

Geothermal Special Achievement Award

Geothermal Rising Conference2023

American Planning Association Excellence in Sustainability Award

American Planning Association2020

Constellation Prize for Energy Transitions

2021

Grist 50 Award

Grist2024

Bostonians of the Year Award

2024

EPA Regional Environmental Merit Award

U.S. Environmental Protection Agency2010

GoGreen Award

City of Cambridge2009

Mass Energy Leadership Award

2016

Every Town Needs A Squeaky Leak Award

2017

Five on Fire Award

2023

Partnerships

Boston University, Harvard T.H. Chan School of Public Health, PSE Healthy Energy, Salem State University, Columbia Gas, Eversource, National Grid, All In Energy, Sagewell, Gas Transition Allies, Mothers Out Front

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