Julian Hughes

Lb-shell Plc is a holding company, which engages in the development of proton-exchange membrane hydrogen fuel cells as a clean energy solution for the distributed energy, diesel replacement, automotive, and aerial drone markets. The company was founded in 1988 and is headquartered in Upminster, the United Kingdom.

Vanilla Energy Ltd. develops fuel cell combined heat and power (CHP) systems for the residential, commercial, and light industrial markets. The company was founded in 2008 and is headquartered in Lanarkshire, the United Kingdom.

Microgen Engine Corp Holding BV is a Dutch company that specializes in power generation and energy efficiency through the use of free piston stirling energy. The private company is based in Doetinchem, Netherlands. The company was the first to bring this technology from a laboratory prototype environment to an industrial setting. The idea of generating heat while also producing power was first introduced by Microgen in 1995. The stirling engine was invented by Robert Stirling, while the free piston stirling engine was invented by William Beale in 1964, who also founded Sunpower.