Constellation Energy Solutions, LLC

Constellation Energy Solutions, LLC is a for-profit limited liability company headquartered in Baltimore, Maryland, that specializes in energy efficiency and conservation services for federal facilities. The company is registered as a corporate entity and has been operating as a federal contractor since its SAM.gov registration in August 2019. Constellation Energy Solutions provides comprehensive energy savings performance contract (ESPC) services to federal agencies, enabling them to implement energy efficiency improvements without upfront capital costs while guaranteeing that energy improvements will generate sufficient cost savings to fund project costs over extended periods.

The company's federal contract portfolio demonstrates extensive experience across multiple ESPC vehicles and funding agencies. Constellation Energy Solutions has received significant delivery orders valued at $172.4 million for installing energy-efficient equipment and implementing energy conservation measures across federal facilities in Washington, DC under the Department of Energy's National Capital Region, with task orders extending to April 30, 2047. The company has also secured a $5.8 million task order from the General Services Administration Region 7 for energy conservation measures at land ports of entry in Texas, a $5.5 million delivery order from the Department of Energy's Federal Energy Management Program for energy conservation projects at federal buildings in Kentucky and Florida, and a $2.7 million task order from the U.S. Army Engineering Support Center Huntsville under ESPC III for the NATICK II project. Additionally, Constellation Energy Solutions completed an $86,791 Investment Grade Audit for NASA's Goddard Space Flight Center through a Multiple Award Schedule contract with the Shared Services Center. All prime contract awards were issued without set-aside restrictions, indicating open competition. The company has engaged multiple subcontractors including Rife International LLC, ECM Holding Group Inc., Pearl Street Systems LLC (doing business as Lumen Services), and I-Star Energy Solutions LLC for executing energy conservation work across GSA buildings. Constellation Energy Solutions has also served as a subcontractor to Leidos Biomedical Research Inc., performing work related to boiler repairs and lower pass tube replacement services.

Constellation Energy Solutions holds two significant federal contract IDVs that position it as a major provider of energy efficiency services government-wide. The company was awarded a $3 billion multiple-award Indefinite Delivery Contract on June 9, 2025, by the U.S. Department of the Army Corps of Engineers Engineering Support Center Huntsville under the Energy Savings Performance Contracts IV (ESPC IV) program, with a performance period extending to December 9, 2035. This IDV allows federal agencies to procure comprehensive ESPC services including distributed generation, renewable energy technologies, energy and water conservation, and related operations and maintenance without upfront capital costs. Constellation Energy Solutions also holds a $5 billion multiple-award IDIQ contract awarded by the Department of Energy's Federal Energy Management Program under the Energy Savings Performance Contract Generation 4 program, effective through August 2, 2028, with a five-year base period and five-year option period. Under this FEMP Generation 4 ESPC vehicle, the company is authorized to provide similar energy efficiency and conservation services to federal agencies across the country. Both IDVs require Constellation Energy Solutions to guarantee that energy improvements will generate sufficient cost savings to pay for projects over task order periods up to 25 years, with all future savings accruing to ordering agencies upon contract completion. These IDV awards provide Constellation Energy Solutions with significant vehicle capacity to support federal agencies' energy efficiency and sustainability objectives across multiple sectors.