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President and Founder2019-02-20T18:35:24+00:00

Ray Darby, P.E.

Ray holds a bachelor’s degree in environmental engineering, with concentrations in solar energy and HVAC, and is a licensed mechanical engineer. He has specialized in energy efficiency and solar energy since moving to Nevada County in 1979. Over the past four decades he has helped thousands of customers in 34 states and abroad obtain their most cost-effective energy options.

He specializes in comparing the costs and benefits of energy alternatives using tools such as advanced building energy simulation models, as well as the installation and servicing of a wide variety of energy systems (including but not limited to solar photovoltaics & solar thermal, hydronic heating, advanced evaporative cooling, and whole-building diagnostics & building performance upgrades).

He has worked with utilities, government energy agencies and fellow industry experts in energy R&D, building code development, sustainable design guidelines for state buildings and schools, and in training energy managers in California facilities. He is a regular guest-lecturer of students from K-12 through college, and educates the public on energy issues through a variety of means.

He played a lead role in the development of California’s building energy code in the early 90’s. He was twice awarded the coveted Superior Accomplishment Award by the California Energy Commission, the first time for his work in developing Sustainable Building Design Guidelines for state buildings and more recently for his efforts helping to resolve California’s peak electricity crisis (he developed and managed the countries first cool roof rebate program).