Salas O’Brien was founded in 1975 at the height of the energy crisis as one of the first firms providing energy auditing in the nation. Since then, Salas O’Brien has grown with more than 3,350 employee owners and 600+ registered professionals operating from locations across North America as a full-service mechanical, electrical, plumbing, structural, civil, and fire protection design firm. In addition to these services, Salas O’Brien’s expertise includes feasibility, master planning, and climate-related planning; energy modeling, greenhouse gas, and lifecycle cost analysis; and technology design for data infrastructure, security systems, and audio-video.