The Prude is a Safe Geothermal Powerplant that produces 750 energy using steam. The difference to the standard Geothermal Powerplant is that it has a smaller explosion when destroyed.
Seize control of nearby steam vents to take advantage of reliable energy.
It can only be built on top of steam vents on each map. They’re more costly than Wind Turbines and Solar Collectors, but provide a good energy bonus when completed.