Ahmed Ghoniem

Center for 21st Century Energy develops technologies for sustainable energy. Its program encompasses existing and emerging technologies at the systems, engineering and scientific levels. These include engines and combustion, thermoelectricity, fuel cells and batteries, solar energy and wind power systems, energy efficient buildings, carbon capture, hydrogen and alternative fuels, and water purification and desalination. The company is headquartered in Cambridge, MA.

Part of Tecogen, Inc., Ilios, Inc. offers custom software development, systems administration, and database administration services. The private company is based in Riverside, MO.

Part of Travelstar, Inc., 21st Century Energy, Inc. manufactures energy conservation products. The private company is based in Orange, CA.

EuroSite Power Ltd. produces energy. It specializes in combined heat and power, cogeneration, gas-engine chillers, discount energy purchase agreements, energy services agreements and on-site utility solutions. The company was founded in 2010 and is headquartered in Macclesfield, the United Kingdom.