Energy News Network
Summary
The mostly hidden networks of insulated pipes connected to centralized heating and cooling equipment are known as district energy systems. They’ve long been championed as an energy efficient way to heat and cool campuses or downtowns, especially in cooler climates.
Many, though, are connected to fossil fuel facilities, and the systems’ high efficiency alone won’t be enough to help schools, cities, and companies meet their goals of eliminating greenhouse gas emissions by midcentury or sooner. Climate pledges by these institutional customers are now driving efforts to repower district energy systems with clean energy.
University district energy systems began initiatives to reduce emissions years ago and “now in the last five years we’re seeing a lot of emphasis on this from cities and towns,” said Rob Thornton, president and CEO of the International District Energy Association.
In Minneapolis, Cordia Energy, the private company that operates the largest downtown district energy system, is replacing natural gas boilers with electric models. And in downtown St. Paul, officials are seeking federal funding for a project to recover heat from a wastewater treatment plant and reduce energy use for a system currently powered by electricity and biomass.
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