EXINERIS Industries is an energy company in Final Fantasy XV operating from the town of Lestallum in the Cleigne region of Lucis. The EXINERIS Power Plant provides the outlands of Lucis with energy drawn from the meteorite shards that are said to have fallen to Eos millennia ago. The meteorite shards exude energy and glow blue. When Prince Noctis's party visits the Disc of Cauthess, Ignis Scientia explains that the meteorite, called The Meteor of the Six, exudes heat which is harnessed to power Lestallum.
Most of the workers for the energy plant are women, among them Holly Teulle. EXINERIS operates a ropeway around the Cleigne area. Lestallum is an industrial city built around the energy business.
When Prince Noctis's party first visits Lestallum, Iris Amicitia will show Noctis around the town. They visit the outside of the EXINERIS power plant, and Noctis learns it mostly employs women. The power plant is later taken over by daemons and the townsfolk hire hunters to dispatch them. Noctis joins the fray and together with Gladiolus Amicitia clears the plant of monsters. Holly, whom the party asks to treat mythril for the use for fixing King Regis's boat, is impressed with Noctis's help, and asks him to check out the malfunctioning ropeway system for her.
Noctis's party arrives in Lestallum during the Assassin's Festival. It is taken over by Loqi Tummelt and his magitek infantry, who take the lead engineer Holly captive to lure out Noctis. They place a Wallbreaker Wave generator at the plant to disable Noctis's magic powers. Noctis gains access to the plant by assassinating various MTs that hold key cards, and while he battles Loqi's magitek armor outside, Cindy dismantles the Wallbreaker Wave generator at the plant.
When Starscourge overwhelms the world, EXINERIS is the only operating power plant left. It keeps Lestallum illuminated, keeping daemons at bay, and thus most people of Eos migrate there.
- The energy company is called "Comrade Industries" in concept art.