37 Installation, repair, and maintenance of energy conversion apparatus and power plants, and consultancy and information in connection with the foregoing; installation of energy saving apparatus, namely LED's and Power Quality improvement equipments, and consultancy and information in connection with the foregoing; repair of energy supply installations, and consultancy and information in connection with the foregoing; installation of renewable energy generation equipment, and consultancy and information in connection with the foregoing; installation, maintenance, and repair of windmills and wind turbines, and consultancy and information in connection with the foregoing; erection, installation, maintenance, and repair of wind turbines, wind stations, and other wind-powered machines, and consultancy and information in connection with the foregoing; construction of wind turbines, wind stations, and other wind-powered machines, and consultancy and information in connection with the foregoing; consultancy and information in connection with the construction of wind turbines, wind stations, and other wind-powered machines; construction project management services in the field of construction of renewable energy and energy generation equipment support structures and ancillary structures for supporting meteorological data gathering equipment; plant construction, plant maintenance, and construction project management services, all for businesses in the energy production sector; repair and installation services, namely, the installation of heating, cooling, and environmental-control systems primarily using solar energy, renewable energy resources, and rainwater; installation, maintenance, and repair of solar installations for generating power, of solar collectors, and of photovoltaic modules; erection, installation, maintenance, and repair of windmills, wind power plants, wind turbines, and other wind-operated machines; repair or maintenance of power distribution or control machines and apparatus; providing information relating to the repair or maintenance of power distribution or control machines and apparatus; charging station services for electric vehicles; plant construction, maintenance, and construction project management services for businesses in the energy production and transmission sector; construction services, namely, planning, laying out, and construction of photovoltaic arrays, systems, and subsystems; installation of solar panels and solar power systems; providing information in the field of construction of solar panels and solar power systems; construction, installation, and repair of heating and power generation equipment and gas and electric appliances and transmission lines; pipeline construction and maintenance; construction, maintenance, and repair of electricity generating plants; extraction of oil, gas, coal, water, or other natural resources in the nature of solar, wind, hydro, all for manufacturing of power and energy products; construction, repair, and installation services of wind turbine generators in relation to the production of energy from wind energy; consultancy relating to the construction, installation, and maintenance of wind power production facilities; construction planning of wind turbines, wind power plants, wind-powered machines, and components therefor; technical construction planning of photovoltaic installations and solar energy systems