The Geysers geothermal field (1960)
In 1960, the first commercial geothermal power plant in the United States began generating at The Geysers in Northern California, tapping natural steam heated by underground magma. The field grew into the largest geothermal development in the world.
Proved that geothermal steam could generate grid power commercially, not just heat buildings.
Geothermal became a mainstream renewable source, and The Geysers still operates today.
Shows geothermal's path from novel demonstration to commercially proven technology — the same path Endurance is trying to chart underwater.
