Providing energy audits, energy assessments, and weatherization services for residences, businesses and other organizations; selling, leasing, installing and servicing high-efficiency residential and commercial heating equipment and water heating equipment; providing rebates, discounts and financing for residential and commercial weatherization projects; providing rebates, discounts and financing for purchases of high-efficiency residential and commercial heating equipment and water heating equipment; providing information, consulting and advisory services to residences, businesses and other organizations in the fields of making residences, businesses and other organizations more energy efficient, reducing energy costs, and reducing energy used by residential and commercial heating equipment and water heating equipment; public utility services in the nature of natural gas distribution and sales, namely, supplying gas from alternative biological sources to customers with the objective of reducing reliance on conventional natural gas; energy management services, namely, providing a service that allows customers to purchase gas from alternative biological sources with the objective of reducing reliance on conventional natural gas; public utility services in the nature of natural gas distribution and sales, namely, supplying gas to utility customers