This story was originally published by the Texas Tribune and is the second of a three-part series on emerging energy sources and Texas’ role in developing them.
In 2009, on a plot of shrub-covered cattle land about 45 miles northwest of McAllen, Shell buried and abandoned a well it drilled to look for gas. The well turned out to be a dry hole. Vegetation grew back over the site.
In 2021, a Houston-based energy company run by former Shell employees came looking for it.
This company wasn’t drilling for oil or gas, though. Its engineers were looking for a place to experiment with their technology for producing geothermal energy, created by Earth’s underground heat.
A startup called Sage Geosystems leased the site. The company installed a wellhead and brought in a diesel-powered pump. They used fluid to create cracks in the rock deep below the surface, a technique similar to fracking for oil and gas.
One day last March, the crew pumped 2... Read more
