Hydropower

Hydropower is a tech from the Iron Age which allows for the construction of watermills. Watermills use flowing water to create power by means of paddles mounted around a wheel. The force of the water moves the paddles, and the consequent rotation of the wheel is transmitted to machinery via the shaft of the wheel.

Required for

 * Watermill

Predecessor tech(s)

 * Well Digging

Successor tech(s)
None