It's hard to build a net-zero building, producing more energy than it consumes, in the middle of a city. But United Therapeutics has, in Maryland USA: "You cannot achieve net-zero as an afterthought,” said Thomas Kaufman, director of the company, which develops rare treatments. “It has to be a mandate at the beginning that drives every single decision.”
And the building employs a range of amazing new thinking, including 52 deep heat-exchange wells, drilled 500ft into the earth below.
“The technology is off the shelf....we didn’t invent anything new. It just required the mindset to make it happen.”
https://qz.com/1771906/the-innovative-design-of-one-of-the-worlds-largest-net-zero-buildings
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