G-Tap
this device was developed by the farmers of the moon Sulon, in an effort to create an efficient source of power. Short for Geothermal Tap, the device tapped into the heat which was trapped below the moon's crust and converted it into electricity. A deep shaft was first sunk into the planet's rocky surface, which plumbed the magma and other underground heat sources. Water was then forced into the shaft and was heated by the magma. It boiled almost immediately, rising back up the shaft and spinning an electricity-producing turbine. The resulting electricity was virtually free, as the device paid for itself quite quickly. The G-Tap on Sulon was destroyed by the Empire, when the moon was first subjugated.