Engineering and design services for others, consisting of energy efficiency and sustainable design consulting for building design teams, building owners, property managers, contractors, and utilities; Mechanical engineering and design for others of heating, ventilation, air conditioning, plumbing, electrical, and lighting systems; Technical consultation in the field of energy efficiency and sustainability evaluations of building designs, energy efficiency design strategies, evaluation and negotiation of alternative power procurement, and engineering and design using minimal environmental impact techniques; Peer review analysis of engineering designs of others; Software development for others and software consultation for others; Green Building development and consulting for new and existing buildings, namely, technical consultation with respect to the selection of environmentally sound construction materials and techniques, construction waste management, indoor environmental quality, energy efficiency, recycling, and conservation