Sustainable Energy Group

Contact: Penn Martin
Work 420 Sierra College Dr #320 Grass Valley CA 95945 Work Phone: (530) 273-4422 Cell Phone: (530) 925-0264 Website: Sustainable Energy Group
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Biographical Info

Our mission:
To help people realize sustainability through renewable power as well as energy & water efficiency. We serve our client’s needs through education, careful planning and a collaborative process utilizing our group of experienced multidisciplinary professionals.

Our vision:
To educate, promote and implement a wide variety of sustainable energy solutions in order to create a more sustainable future for ourselves and future generations.

Our Founder: 

Ray Darby, California licensed Professional Mechanical Engineer #21982. Ray began offering his energy engineering services to Nevada County in 1979 and has devoted his career to helping others make the best energy choices. His experience includes over 26 years as an energy engineer in private practice and 10 years as a government energy specialist. During this time he has worked closely with the solar industry from research and development to national standards. He helped develop California’s energy code as well as the first ever sustainable design guidelines for state buildings. In 2000 he developed and managed a twenty-five million dollar statewide program that reduced electricity load on the grid during peak periods by almost 20 MW, or enough power to serve 20,000 homes. He has evaluated most every energy efficiency and renewable energy technology at some point in his career and has designed thousands of sustainable energy systems for customers in 34 states and abroad.


Categories: S, Solar Systems, Residential & Commercial