Renovated Microsoft Campus Set to Use Geothermal Energy to Heat/Cool Millions of Sq Ft. of Office Space

It’s been four years now, but Microsoft’s Redmond campus modernization is almost finished. The massive 72-acre rebuild includes dozens of hopefully planet-saving designs and features, but none are more impressive than the Geothermal Energy Center (TEC). To heat and cool the massive campus, a 6.5-acre geothermal well field, consisting of around 900 boreholes drilled up to 550 feet deep was completed last year with the aim of delivering 50% of the heating and cooling needs without carbon emissions. The subsurface environment was unmapped, and known to be riddled with past...