Energy and Environmental Economics, Inc. (E3) is a consulting firm based in San Francisco that specializes in economics and engineering within the electric power industry. E3 collaborates with energy companies and regulators across various regions, including the U.S., Canada, Africa, China, Europe, India, and the Middle East, focusing on key areas such as energy efficiency, renewable energy, distributed generation, electric vehicles, electric rate design, transmission, and climate change policy. The firm is dedicated to providing innovative solutions and insights to address emerging energy challenges.