42 Designing, engineering and leasing for others energy management systems and equipment, quality control systems and equipment, air conditioning and cooling systems and equipment, heating systems and equipment, ventilation and climate control systems and equipment, solar energy systems and equipment, and lighting systems and equipment; engineering services in the field of power generation, electric transmission and distribution, and water treatment; remote energy metering services; energy consulting services featuring energy scheduling services and energy load management services; energy auditing services; design for third parties in the energy and air conditioning, heating, and climate control systems field; auditing energy use, efficiency and power quality; design for others in the photovoltaic and solar energy products field; design services, namely design of lighting fixtures and solar energy products