Hal LaFlash is a consultant and advisor in clean technologies, following more than 31 years at Pacific Gas and Electric Company and its parent, PG&E Corporation. He advises utilities, renewable energy developers, cleantech start-up companies, and non-profits. He also lectures at colleges and universities. From 2007 until his retirement in October 2011, Hal was the Director of Emerging Clean Technologies in the Renewable Energy Department at Pacific Gas and Electric Company. During his career at PG&E, Hal also held various positions in energy efficiency, non-utility generation, gas transportation, resource planning, and renewable energy policy.

Hal was on the executive board of the California Biomass Collaborative; he served on Department of Energy peer review committees, and he co-authored "Hedging Carbon Risk: Protecting Customers and Shareholders from the Financial Risk Associated with Carbon Dioxide Emissions,” which was published by the Electricity Journal. Hal was the project director for a successful $25 million grant application to the Department of Energy for PG&E’s 300-MW Advanced Compressed Air Energy Storage demonstration project. He is currently a technical advisor to the Center for Energy Advancement through Technology Innovation (CEATI) and several clean tech start-up companies. Hal has a Bachelor of Science degree in Mechanical Engineering from the University of Wisconsin and a Masters in Business Administration from Saint Mary’s College of California.