Energy Efficiency companies

A national network of mechanical, electrical, and plumbing contractors delivering integrated building systems and energy-efficiency services across the United S…

Solar Energy Solutions is a family-owned, employee-owned (ESOP) solar installer providing EPC services for residential, commercial, and utility photovoltaic and…

Eagle Creek Renewable Energy acquires, rehabilitates, and operates 85 small hydroelectric facilities across 18 U.S. states, with 690 megawatts of total generati…

Ameresco is an energy infrastructure provider that develops, constructs, and operates renewable energy and efficiency solutions for government, utilities, and i…

Talen Energy operates 13.1 GW of U.S. power generation assets and supplies carbon-free nuclear power to data centres and the grid.

Signal Energy Constructors is a leading full-service design/build contractor providing Engineering, Procurement, and Construction (EPC) services for renewable e…

Atmos Energy is a regulated natural gas utility distributing safe, reliable gas service to residential, commercial, and industrial customers across its service…

Sunrun is a leading American residential solar and battery storage company that installs home energy systems with little to no money down, serving nearly 800,00…

NRG delivers smarter, cleaner energy solutions to millions of homes and businesses across North America, operating in energy, power generation, and smart home t…

Rehlko supplies distributed energy and critical power solutions - including systems, engines, and installation services - for homes, businesses, and essential i…

Major U.S. electric and natural gas utility serving 5.7 million customers across eight states with focus on sustainable energy solutions.

Zap Energy develops fusion and fission technologies using sheared-flow-stabilized Z-pinch systems to generate carbon-free power at scale.

North American manufacturer of high-efficiency solar panels for residential, commercial, and utility applications, with facilities in Washington and South Carol…

GE Vernova is a purpose-built energy technology company on a mission to electrify and decarbonize the world through its Power, Wind, and Electrification busines…

Enfinity Global develops and operates solar and wind energy projects across Europe, Asia, and the Americas, managing a 39.3 GW renewable energy portfolio with o…

Trane Technologies develops heating, cooling and refrigeration systems for commercial, residential and transportation sectors, targeting energy optimisation and…

Fidelity Building Services Group provides HVAC, building automation, emergency power, and energy solutions across more than 75 U.S. locations, employing over 3,…

Trystar provides on-site solar and wind microgrid systems enabling organisations across utilities, data centres, healthcare, and other sectors to generate and m…

American supplier of enriched uranium fuel and uranium enrichment technology for commercial nuclear reactors and national security purposes.

Vertically integrated solar developer building and operating utility-scale solar projects across the United States, with 1 GW constructed and 14 GW in developme…