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Geothermal Pilot Project in Framingham

Why Are We Doing This 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.

A geothermal system uses water, 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. This energy can be used to heat and cool indoor spaces and produce hot water in conjunction with geothermal heat pumps.

Where Is The Work Being Done

The route is a neighborhood in Framingham consisting of 36 buildings – 24 residential and five commercial – for a total of 125 customer accounts. The technology may be expanded elsewhere based on the outcome of the pilot.

Learn more about the program and what participating customers receive. 

Watch our virtual tour of where we’ll be working in the neighborhood that will host this first-of-its-kind networked geothermal project.

What Work Will Be Done?

There will be three parallel stages:

  1. Drill borefields
  2. Install main in the street/install service "Ts" for individual homes/buildings
  3. Work in customers' homes.

Each is not dependent on the other, but all three must be complete prior to starting up the network.

When Is The Work Being Done?

  • Project design - Complete
  • Electrical design (best plan for powering the networked system) - Complete
  • Requesting proposals for construction work - Complete
  • Working with City of Framingham on permitting - Complete
  • Test borehole drilling, thermal capacity (test results determined viability) - Complete
  • Main and service pipe installation - Complete
  • Borefield drilling at three locations along the route - Complete
  • In-home equipment conversion work - Complete
  • Equipment fine-tuning and restoration - Estimated completion Q1 2026

December 2025

Our customers are enjoying the second heating season with their clean energy system. Throughout the fall and winter we have been monitoring system function, customer usage, and performing behind-the-meter maintenance as-needed to optimize customer equipment. We are working with two remaining residential customers to have their geothermal systems installed in Spring 2026, along with the final residential customer still requiring weatherization in their home. Next steps will focus on analyzing system data, customer experience and maintenance planning.

Past updates are available

Community Outreach

We're committed to engaging municipal officials, residents, businesses, community groups and neighbors about upcoming project activities.

Our efforts have included municipal briefings, direct mailings, on-site and virtual meetings, door-to-door outreach, and participation in community events. You can read more updates in the most recent geothermal email.

Past community outreach

Webinars:

Have questions about the geothermal pilot?

If you have questions about the pilot or would like to receive regular updates, please email geothermal@eversource.com.