Introducing our networked geothermal program.
We’re committed to finding new ways to provide our customers with cleaner energy while helping them use energy more efficiently. We’re evaluating the potential for thermal energy networks to provide highly efficient space and water heating for our customers in place of natural gas heating.
How do geothermal energy systems work?
A thermal energy network uses the earth’s ground temperature to provide heating and cooling through a buried piping network. The constant underground temperature serves as a heat source during winter and transfers indoor heat to the ground for cooling during the summer.
When a building requires heat in cold weather, fluid circulated through the ground loop absorbs the warmth from underground and brings it indoors where a geothermal heat pump delivers comfortable, clean, warm air throughout your indoor space.
When a building requires cooling in summer months, excess heat from indoors is absorbed and concentrated by the heat pump and sent out of the building through the ground loop and back into the ground. Your geothermal heat pump provides cool, conditioned air throughout your indoor space.
What is networked geothermal energy?
What happens when networked geothermal is installed?

Information about our networked geothermal program
Our geothermal program explores if a geothermal network can be used to replace customers’ natural gas service. We are currently designing a geothermal network in the Dorchester neighborhood of Boston, MA in collaboration with the Boston Housing Authority.
In the news
- January, 2024 - Boston Housing Authority, National Grid Agree to Develop Networked Geothermal Heating at Franklin Field Apartments
Want to learn more?
Email our geothermal team at geothermal@nationalgrid.com