We are excited to announce that we are exploring the expansion of the existing networked geothermal pilot project infrastructure in Framingham, Massachusetts. 

In December of 2025 it was announced that Home Energy Efficiency Team (HEET) – along with project execution partners Eversource Energy and the City of Framingham – received $8.6 million in federal grant funding from the Department of Energy (DOE) to implement the expansion.

The expansion - dependent on approval by the Department of Public Utilities (DPU) - would be located directly adjacent to the existing pilot neighborhood.

The expansion would potentially include:

• 37 buildings with 23 single and multi-family homes - including 13 Framingham Housing Authority units - and one school building. Participating customers would include existing Eversource electric and/or natural gas customers
• Estimated capacity of 295 tons, roughly doubling the size of the existing loop capacity
• One additional borefield
• 0.61 miles of additional main pipe

If completed, this would be the first community geothermal network loop to connect to an adjacent operational loop, establishing guidelines for network growth.