“It’s going to be the decade of geothermal,” Cindy Taff, chief executive of geothermal company Sage Geosystems, told The Hill in February of 2025. Over a year later, it is becoming increasingly evident that Taff is definitely onto something. Although geothermal energy is still a tiny sector and faces some significant headwinds when it comes to its up-front installation and development costs, it has numerous competitive edges over other, more common energy sources. It’s clean, it’s constant, it’s politically popular,…