Case Study: Clarendon Group achieves 30%+ steam reduction and water & cost savings with Veolia North America’s Green Steam service

“Green Steam” heats a historic commercial building in Downtown Crossing

Clarendon Group faced the challenge of heating and providing hot water for a historic 1925 commercial building at 10–24 School Street in Boston without the capital, space or disruption of an onsite boiler plant, while improving reliability and meeting sustainability goals. To address this, Clarendon Group partnered with Veolia North America to receive “Green Steam” service—steam produced with Combined Heat and Power at Veolia’s Kendall Cogeneration Station—and to modernize an aging steam distribution system that had wasteful condensate practices.

Veolia North America renewed a long-term Green Steam supply agreement and supported upgrades to the building’s heating infrastructure (removing obsolete piping and installing new piping, valves, traps and insulation), while Clarendon Group installed a condensate heat exchanger to preheat domestic hot water. The combined measures avoided onsite boiler capital and space, improved reliability, conserved water, lowered city water and sewer charges, and delivered immediate cost savings, including an annual reduction in steam consumption of over 30%.

Clarendon Group