A Groundbreaking Geothermal Heating and Cooling Network Saves This Colorado College Money and Water
By Phil McKenna , Inside Climate News. Excerpt: GRAND JUNCTION, Colo.—The discussions started roughly a decade ago, when an account manager at Xcel Energy, the electricity and gas utility provider, expressed confusion, officials at Colorado Mesa University recalled. A public school on the state’s remote western slope, Colorado Mesa had recently doubled in size, but its energy usage had hardly budged as it began installing an advanced geothermal heating and cooling system. Since its geothermal buildout began in 2008, the university has saved more than $15 million in energy costs, money it has passed on to students through lower tuition and more scholarship funding. Hundreds of boreholes drilled approximately 500 feet beneath athletic fields and parking lots tap low-temperature thermal energy to help heat and cool campus buildings in what is now one of the largest such networks in the nation. ...A boiler that provides backup heat is rarely used. A bigger challenge is...