A district shall be created for the purpose of conducting and operating a utility, and to carry out such purpose it shall have power and authority to acquire, construct, reconstruct, operate, maintain, extend or improve any utility within or without the district, and to furnish, deliver and sell to the public, to any municipality, to the state and to any public institution heat, light and power service and any other service, commodity or facility which may be produced or furnished in connection therewith.