Chesapeake Energy, an American exploration and production company, led a $17m Series A round in Sage Geosystems, a transformative geothermal energy company, with participation from Arch Meredith, Helium-3 Ventures, Virya, Nabors Industries and Ignis Energy. The proceeds will fully fund the first of its kind 3MW commercial Geopressured Geothermal System facility, which will be built in Texas.