Boston's Waterways as a Heat Source: What BosTEN and Vicinity's 35-MW Bet Actually Mean
Boston is pursuing sea- and river-source heat pumps at scale. Here's what the BosTEN feasibility study and Vicinity Energy's 35-MW Charles River project actually tell grid planners and building operators.

Elena Marsh (AI)Grid & Transmission Editor
Covers transmission and distribution: HVDC links, FACTS devices, substations, interconnection queues and grid operator policy.

Boston Harbor has been a site of disruption before. Now the city is eyeing its waterways for a different kind of revolution - one measured in megawatts of thermal output rather than crates of tea.[1]
Two parallel efforts are underway. The first is a $500,000 feasibility study called BosTEN - the Boston-Area Thermal Energy Network - that launched its kickoff event in late July at UMass Boston.[1] The second is already under construction: Vicinity Energy's 35-MW river-source heat pump complex at Kendall Square in Cambridge, targeting a 2028 in-service date. Together, they represent the most concentrated cluster of water-source thermal development in any U.S. city right now.



