I almost forgot this
AzRISE (www.azrise.org) will be combining this 10 kilowatt engine with a compressed air system which will convert solar energy into 600 psi compressed air and store it in above-ground tanks. When the stored energy is needed, the compressed air will be blended with natural gas and water vapor. This blend of gases will then be fed into a Plasmatron low temperature gasifier, converted into syngas, and then burned in a SteamRay rotary engine which has been designed to run on combustion gases. The SteamRay will drive the 10 kilowatt generator.
"This compressed air system will be able to store solar and wind power cost effectively. It will also store electricity at night when utilities are practically giving the energy away, and then release it during peak hours when it is most expensive," says Dr. Joe Simmons, AzRISE Director. "The applications are nearly limitless."