The state of next-generation geothermal energy

What would we do with abundant energy? I dream of virtually unlimited, clean, dirt-cheap energy, but lately, we have been going in the wrong direction. As J. Storrs Hall notes, in 1978 and 1979, American per capita primary energy consumption peaked at 12 kW. In 2019, we used 10.2 kW of primary energy (and in 2020, we used 9.4 kW, a figure skewed by the pandemic economy). We are doing more with less, squeezing out more value per joule than ever before. But why settle for energy efficiency alone? ...