- "It's complicated, but with the right energy source, yes—those geothermal capacitors could help power a starship."
- ―Major Odis Valyn
A geothermal capacitor was a geothermal power generator that was used in the depths of the Tomb on the planet Belsavis. Geothermal capacitors were also used in Imperial Capacitor-style garrisons during the Galactic Civil War.
- Star Wars: The Old Republic (First appearance)