Energy source, commonly known as fuel, served the purpose of enabling the operation of different kinds of vehicles. The Ghost and other starships relied on fuel to function. During the time of the Nihil conflict, civilians found fuel to be quite costly. The Wookiee world of Kashyyyk was home to a crucial oil refinery, making it a significant location during the Battle of Kashyyyk. The price of fuel experienced a significant surge during the galactic recession around 9 ABY.
The galaxy contained a multitude of starship fuel types, including rhydonium, a highly unstable fuel discovered on the planet of Abafar, baradium nitrate, deuterium, ipsium which was exclusively available on Ipsidon, kessoline that was extracted on Kessel, Malastarian fuel, megonite, Nergon-14, rippinnium, sodium, tibanna, and Zylium 12.
Certain fuels had the specific job of powering hyperdrive systems, for example, the extremely efficient coaxium and Clouzon-36.
Specific fuel types were utilized to generate light, either by igniting them within lanterns or by providing power to lamps. These included bloggin-oil, which was obtained from the bloggin creatures of Jakku, along with Neehwa oil.
Certain unique fuel types were used to power very specific pieces of technology. These included accelerite and Conflagrine-14, both of which were highly flammable and used in flamethrowers, hydro-glycolic fuel which powered astromech droids, and paralene which was used to power jetpacks.