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Geothermal Pilot in Framingham

An innovative heating and cooling system using renewable power from the earth.

Our First-of-its-Kind Pilot Uses Utility-Scale, Networked Geothermal

A geothermal system uses wells, piping and pumps to pull the earth's heat out of the ground to warm buildings in winter and pumps heat from buildings back into the ground in summer to cool them.

It is renewable energy that comes from the sun's rays and temperatures produced in the earth's core.

We're piloting its use at scale in Framingham as a potential option to complement or replace delivered fuels and natural gas service for heating and cooling. The use of this technology could be expanded in the future based on the outcome of the project. 

Watch this overview to learn about the science of geothermal energy

About the Project

We're committed to delivering New England's vision of a clean energy future, and determining if networked geothermal systems are a viable option to affordably heat and cool homes and businesses.

The  project was approved by the Massachusetts Department of Public Utilities and, once in service, the pilot is intended to run through two heating and cooling seasons (24 months). The planned route consists of  37 buildings, 32 of which are residential homes. 

We entered into an agreement with participating customers for the duration of the pilot, and will accept feedback before, during, and after the pilot period to ensure the best customer experience possible.

Construction is scheduled to begin spring 2023. 

See more detailed construction updates, a route map and community outreach.

What Pilot Customers Receive

  1. A cost-effective, low-carbon source of heating and cooling.
  2. We pay for the cost of building and installing the geothermal system, as well as all the equipment to be installed in homes and businesses.
  3. Participants will pay a low fixed charge each month for access to the geothermal network. They will be responsible for their electric bill that will power the heat pump. However, their monthly energy costs should ultimately decrease because they will no longer be primarily paying for natural gas or delivered fuels to heat and cool their homes and businesses.
  4. The technology is proven, but if something isn't functioning as planned or customers want an alternate heating and cooling service, we will work to ensure the continued heating and cooling of property for personal comfort.

Additional Information and Project Coverage

Have Questions?

If you have questions about the pilot or would like to receive regular updates, please email

Reference Guide

Learn more about the process, technology, neighborhood and more.

See the detailed geothermal pilot reference guide