The decarbonization of our energy sector is inevitable. But the quickest path to this zero-carbon future isn’t obvious.
Which storage technology will win out? To what extent are dispatchable energy sources like nuclear and geothermal necessary to supplement wind and solar?
Despite the rapid drop in renewable energy prices, it’s hard to imagine a world where we hit our carbon targets with wind and solar alone. The limitations to consistent generation and distribution of energy from renewables make a strong case for the place of novel storage and generation technologies in our energy mix.
As big believers in the portfolio approach to energy generation, we’ve been excited about the potential of geothermal for as long as we’ve been investing in climate.
Our first climate-related investment came in early 2017, when we backed a Google X spinout called Dandelion. We wrote about that investment here and have continued to support the business as it has scaled in New York and Connecticut. Through our work with Kathy and the Dandelion team, we’ve learned more about geothermal energy and its potential.
Geothermal is both abundant and consistent. With underground resources flowing 24/7 and available anywhere on earth between depths of 10 and 20 km, the biggest bottleneck to expanding production potential is the cost of drilling. Using today’s technologies, prime geothermal conditions are limited to less than 10% of the planet and geothermal power accounts for less than 0.5% of global energy generation today.
David Roberts at Vox does a great job (Read more...)