35 business consultation and business marketing consulting services in the field of energy conservation, energy marketing, and buying, selling, and trading of electric power, natural gas, and other fuels, namely, coal and crude oil; procurement services, namely, purchasing for others of electric power, natural gas, and other fuels; billing services; procurement of long-term supply contracts for others for natural gas, oil, natural gas liquids, liquefied petroleum gas, petrochemicals, and refined petroleum products, namely, fuel oil and gasoline; wholesale distributorship services featuring power and its by-products, namely, power and its by-product generated from cogeneration, diesel fuel, natural gas, oil, natural gas liquids, liquefied petroleum, coal, and related energy sources; energy usage management