This is the transformer yard for the Thunder Mountain nuclear power plant.
Encompassing the transformer yard and the parking lot in front of the power plant, this workshop has generous loot and plenty of military-themed environments, though is slightly limited in raw building space. Reactivating the power plant will grant access to hundreds of units of electricity from the nearby power boxes and allow for manufacturing fusion cores. Available resources include water (9), food (7), fusion cores (3), and crystal, nuclear, steel, and wood (1 each). The area includes a cooking station by default.
The Thunder Mountain power plant yard appears only in Fallout 76.