Austin Sustainable Energy LLC is a two-man think-tank composed of Gene Bishop and Paul Roush, two long-time Austinites with more than 50 years of combined engineering experience.

From their website:
“Austin Sustainable Energy LLC is an engineering consulting and services company with a focus on renewable energy and green products, and we can provide you with the engineering skills and knowledge you need to get the job done–whether it is designing a simple residential solar photovoltaic system or providing program management for a complex energy storage system.”

Visit their website for your renewable energy engineering and consulting needs:

http://www.austinsustainableenergy.com/