Rather than replacing heating systems building-by-building, the facility leverages existing steam infrastructure — a district energy network that spans 29 miles. By integrating river-sourced heat pumps with renewable electricity, Vicinity aims to offer rapid emissions reductions without relying on major grid expansions. The initiative reflects an increasingly favored strategy: electrify baseload heat while minimizing disruption to existing urban systems.
This marks the first time a U.S. district energy provider has tapped a river as a thermal source on this scale. It’s also a key step in Vicinity’s broader commitment to reach net-zero emissions by 2050. The company, which operates in 12 U.S. cities, sees this flagship project not just as a local decarbonization win, but as a model for dense urban cores looking to meet regulatory targets without overloading electric grids.
Construction has already begun at the Kendall Square site, where an aging natural gas boiler is being demolished to make room for the new equipment. Heat pump systems will be supplied by Everllence, while DCO Energy — a longtime partner on similar projects — is overseeing installation and site modifications.
What makes the project notable isn’t just its scale, but its ability to sidestep typical infrastructure constraints. By using river water as a heat source and feeding it into existing steam systems, the plant avoids the need for costly building retrofits or expanded transmission capacity. It also delivers immediate emissions reductions — a growing priority for institutions navigating both internal ESG goals and evolving city mandates.
Several large commercial and institutional customers, including medical and academic organizations, have already signed on. Early adopters of Vicinity’s eSteam service include IQHQ and Emerson College, both of which are responding to Boston and Cambridge’s strict building performance standards, including BERDO and BEUDO compliance.
With a 42-megawatt electric boiler already in place at the same location, the new heat pump system builds on proven operations. It also aligns with a pattern Vicinity is replicating elsewhere: in Grand Rapids, Michigan, the company is installing a 9-megawatt electric boiler — the city’s first major thermal electrification milestone. Across markets, the approach stays consistent: use existing district networks, integrate renewable electricity, and scale decarbonization with speed and efficiency.
