Energy management services, namely, providing a service that allows customers to purchase energy, namely, natural gas, electricity and renewable energy at fixed and variable rates on the retail market; energy service company services, namely, energy auditing, tracking and monitoring energy consumption or energy savings for others for cost accounting purposes; arranging for the supply of petroleum products and renewable energy to customers by purchasing petroleum products at spot prices from refiners and wholesalers and arranging for delivery to customers; inventory management and inventory control of petroleum products; auditing energy rates for others; billing in the field of energy services