Charles Eley is an architect, mechanical engineer and author with 40 years’ experience in energy efficient and sustainable design. His latest book is Design Professionals Guide to Zero Net Energy Buildings (Island Press 2016). During his career, Mr. Eley has made significant contributions to the California energy standards, ASHRAE Standard 90.1, and energy codes in Hong Kong, Hawaii, Guam, American Samoa and Australia. Mr. Eley worked as the lead consultant to the California Energy Commission to update the state energy efficiency standards for five code update cycles.

In addition to his energy codes and policy work, Mr. Eley has also developed a number of important technical manuals and publications. He also served as the founding executive director of the Collaborative for High Performance Schools and was the technical editor of the CHPS Best Practices Manual. He has also developed a number of energy analysis software applications and has served as energy consultant for a number of landmark green buildings.

Mr Eley currently writes, serves on non-profit boards, provides specialized consulting, and teaches classes on building energy efficiency and green technologies