A hydroelectric generator does not require much maintenance. If you build it right or if you purchase a decent generator, you should not have much problems.

generator

For example, in a hydroelectric dam, water makes a turbine move; the turbine makes a generator move, the generator generates the electricity.

For example, in a hydroelectric dam, water makes a turbine move; the turbine makes a generator move, the generator generates the electricity.

For example, in a hydroelectric dam, water makes a turbine move; the turbine makes a generator move, the generator generates the electricity.

For example, in a hydroelectric dam, water makes a turbine move; the turbine makes a generator move, the generator generates the electricity.

The hydroelectric generator made 5 megawatts of electricity every day.