Ray Darby has over 30 years of experience in the energy industry and a background in mechanical engineering. Today, his Grass Valley, Calif. company, Sustainable Energy Group, specializes in finding the most cost-effective alternatives to meet a given customer’s needs and budget.

With 20 years of experience, president Greg Beach has embraced e-commerce to grow his business to every inch of the U.S. and parts of Canada. By offering continuing education to their employees and to the general public, as well as keeping an entire warehouse fully stocked with geothermal supplies, Geo-Hydro Supply is a beacon for the industry.

Starting out with only five employees, Air Flow Systems, Inc. has grown into a successful, key player in the Virginia geothermal scene completing over 350 projects.

Founded in 1988 by president, Paul Israel, Sunlight Solar Energy is committed to bringing about the solar revolution and providing high-quality, grid-tied solar electric and solar thermal installation throughout the northeast and beyond.

Incorporated in 1975, The Solaray Corp. is now one of the nation’s oldest solar companies in continuous operation under the same name and ownership. A well positioned player, TSC does business as Inter-Island Solar Supply- a Hawaii-based distributor, & SunEarth- a California-based solar thermal manufacturer.

Providing its customers with quality, knowledgeable service for 60 years.

The Atlanta-based turnkey solar company of Radiance Solar is committed to designing, developing and installing solar systems throughout the southeast; and in just two short years, CEO and founder James Marlow, has created a company with a three-fold focus: people, planet, and profits.

Founded in 1986, the Tulsa-based firm of K&M Shillingford is the only company that leases geothermal systems to customers.

Industry pioneer Sun Farm Network makes solar affordable.