Membership organization providing information on energy efficiency, energy services, deregulation, facility management, plant engineering, and environmental compliance. Offers outreach programs from technical seminars, conferences, books, tradeshows, job listings, and certification programs. Membership base of over 8,000 professionals and recognized certification programs including Certified Lighting Efficiency Professional (CLEP), Certified Energy Managers (CEMs), Energy Procurement, Power Quality, Lighting Professionals, Indoor Air Quality Professionals, and Cogeneration Professionals.