AltaRock Energy

AltaRock Energy is a full-service geothermal energy technology and services company. AltaRock’s experienced team, innovative technology and creative approach turns under performing assets into highly profitable energy projects, building and operating the geothermal power plants of the future.

Cogenra Solar


Cogenra’s mission is to enable widespread adoption of clean renewable energy by providing efficient, flexible solar electricity at lower costs than conventional fossil fuel alternatives. The company offers large distributed and utility-scale solar solutions that leverage upstream progress in the crystalline silicon PV cell industry, low-cost construction materials and innovative business models with highly-scalable worldwide module manufacturing capacity.


EtaGen is merging the aspirations of clean tech with the practicality of tried-and-true technology to revolutionize the way electricity is generated and delivered. By taking a fundamental approach to efficient power generation, the company has eliminated the key constraints of conventional engine architecture. The result is an on-site power generation system that makes categorical leaps in efficiency, reliability, cost and emissions performance.


Stion is a solar photovoltaic company developing high-efficiency thin-film modules. The company aims to minimize the total installed system costs of solar electricity. In addition to delivering the reduced material and processing costs associated with thin films, Stion cuts dollar-per-watt costs at the system level by generating the same power using a smaller product, thus making PV economically feasible to more customers.


TerraPower is a nuclear energy technology company that is working to raise living standards globally. The company’s goal is to provide the world with a more affordable, secure and environmentally friendly form of nuclear energy.