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Oil and wood boiling stations (heating plants)

Three small old heating stations:
bitumen – 110m3 of hot water and enough storage for a whole winter worth of warmth, but it produces a lot of pollution
LPG – 95m3 of hot water with a little less storage space and LPG is slightly more expensive to build, but it produces very little pollution
wood – 75m3 of hot water from a cheap, simple plant that produces a significant amount of pollution

You can subscribe to the geothermal plants here.

Planned:
Medium sized plants
Large plants
Possibly: Peat heating plant (use crops & wood or think of something super creative)

Costs (fuel imported near border):
geothermal < coal < fuel < bitumen < wood