Memorial Sloan Kettering Cancer Center (MSK) completed a major heating infrastructure transformation across its 2.49 million-square-foot Super Campus on the Upper East Side of New York City. Spanning nine interconnected buildings, the project was designed to improve energy efficiency, reduce greenhouse gas emissions, enhance resiliency, and support future decarbonization efforts.

In partnership with World Energy Innovations (WEI), MSK transitioned the campus from an aging district steam system to a high-efficiency hot water hydronic system. Following a feasibility study completed in 2017, construction began in 2019 and was completed in 2022 under a design-build approach. The project included the installation of two modular boiler plants, twenty-one condensing hot water boilers, six combined heat and power (CHP) units, more than 30,000 feet of new hot water piping, and upgraded heat exchangers, pumps, controls, and humidification systems.

The upgraded system delivered significant operational and environmental benefits, including improved temperature control, reduced maintenance requirements, water savings, and lower operating temperatures. In 2025, MSK reduced annual energy usage by 32,227 MMBtu and achieved a 19% reduction in greenhouse gas emissions compared to 2020 levels. The project also generated more than $33 million in cumulative savings to date. The CHP system operates at approximately 75% overall efficiency, outperforming the regional electric grid while providing localized grid support.