Water Tanks store excess Water that your grid generates. This stored Water is released when your grid consumes more Water than is generated.
Adding the cost of one connection, 1 metal, to the cost of building the actual water tank, the water storage is therefore 200 per metal regardless of size. The advantage of larger water tanks is increased water storage, albeit small, for every KW consumed when you factor in the consumption of the connector and denser water storage on a fixed area.
- ↑ In-game tool tip