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Thanks to a Naval Undersea Warfare Center (NUWC) energy savings performance contract (ESPC) partnership, the NUWC installed geothermal heat pumps, high-efficiency HVAC and building systems; improved energy management controls; and repaired two significant underground water leaks. Since the completion of this project in the fall of 2011, NUWC has demonstrated an annual energy savings of more than 30%. The project will save the center 69 billion British thermal units per year—enough to power 726 homes—and will significantly reduce NUWC’s carbon footprint. This project leveraged $14.7 million in private investment.

The NUWC partnered with Trane Inc. to utilize DOE’s energy savings ESPC. ESPCs are contracts that allow federal agencies to accomplish energy-savings projects without up-front capital costs. EERE’s Federal Energy Management Program provides technical assistance and training for federal agencies implementing ESPCs.

The Federal Energy Management Program (FEMP) works with key individuals to accomplish energy change within organizations by bringing expertise from all levels of project and policy implementation to enable federal agencies to meet energy related goals and to provide energy leadership to the country.

The Office of Energy Efficiency and Renewable Energy (EERE) success stories highlight the positive impact of its work with businesses, industry partners, universities, research labs, and other entities.

Project Overview

Positive Impact

More efficient buildings. Naval Undersea Warfare Center reduces carbon footprint using a Department of Energy ESPC.




Naval Undersea Warfare Center, Trane Inc.

Clean Energy Sector

Energy-saving homes, buildings, and manufacturing