Geothermal Engine

The Geothermal Engine is a placement building that generates continuous power by exploiting geothermal fields. It operates without beaver operators, doors, or any path connections and produces power all day, every day while placed on a valid Geothermal Field. The Geothermal Engine provides a steady, passive source of electricity that does not require fuel consumption or active maintenance.

Construction of a Geothermal Engine requires research and building resources, so it is gated behind Science and the usual material costs in the tech tree. The relative Science requirement for the Geothermal Engine is low compared to many advanced buildings, and the power output is modest rather than game-breaking; the typical output cited by players is around 400 horsepower. Because it uses no workers and does not occupy roads or gates, it is well suited for remote or constrained locations where workforce or path planning is limited.

• Place the Geothermal Engine directly on a Geothermal Field tile; it will not function off-field.
• The building does not need beaver workers, doors, or a path connection to any network to produce power.
• It produces continuous, maintenance-free power day and night without consuming fuel.
• The Science cost to unlock the Geothermal Engine is low, but you must weigh that and the wood/materials required for construction against alternative early investments.
• A single Geothermal Engine provides a modest amount of power (commonly around 400 hp), so multiple engines or supplemental sources may be necessary for larger colonies.
• If several Geothermal Fields are accessible near your starting area, prioritizing Geothermal Engines can be an efficient way to secure steady power; if fields are distant or scarce, consider investing Science and wood into other power infrastructure first.

The Geothermal Engine is most valuable for reliably powering critical infrastructure in locations where fuel logistics or workforce allocation would otherwise be constrained. It integrates cleanly into a power grid as a background supply, but colony planners should account for its limited output when scaling industrial or high-energy-demand operations.