Since 1982, Onsite has been helping customers reduce their energy cost and improve operations. Our full-service energy efficiency projects team consists of Professional Engineers, Project Managers and Project Developers that include PE and CEM Certified professionals. Our team works with you and your staff to understand your business, your energy usage intensive systems, and to identify, analyze and implement projects that save you money and improve your operations. Onsite is a California licensed A (General Engineering Contractor) and C-10 (Electric Contractor).