"The plant," referred to by Lanni, is Greenridge Generation, a former coal power plant just outside the village of Dresden that now operates as a bitcoin mining facility.
Do coal plants produce oil as a byproduct, do they use it as a lubricant, or are they mining with oil?
Ah, according to this earlier piece, they're using natural gas:
At the Dresden facility, water from Seneca Lake is used to cool the plant, then returned back to the lake at a warmer temperature. Further, the natural gas used to power the plant emits greenhouse gases that opponents say are doing irreparable harm to air quality.
Still confused about where the oil would come from.