In addition to home energy audits, Xcel Energy offers rebates to North Dakota residential customers for the purchase of energy efficient heating and water heating technologies. Xcel offers rebates to homeowners for natural gas furnaces and boilers, as well as natural gas water heaters. Through the Energy Audit offering, residents can receive audits at 75% less than market value to help them determine the right energy-saving improvements for their homes. Contact Xcel for more information on this program.