William Griffin

Gemma Power Systems LLC provides development, consulting, engineering, procurement, construction and start-up and maintenance services to the energy market. It designs and builds power generation facilities. The firm's projects include district heating and cooling systems, boiler plant construction and renovations, utility maintenance and renovations, combined-cycle and cogeneration facilities, planned and emergency peaking plants and alternative fuel-powered facilities. The company was founded by founders Joel and Bill Griffin in 1997 and is headquartered in Glastonbury, CT.