Here the water is used by a small and very old hydroelectric power plant.

At least some of the power will be from hydroelectric plants.

A number of hydroelectric plants have been built on the river.

The hydroelectric plant is big enough to power the whole region.

A hydroelectric plant was built at the turn of the century.

There is a hydroelectric plant on the river near the city.

The first hydroelectric power plant was built on this river.

It was one of the first hydroelectric plants in Texas.

You know how out West they have lots of hydroelectric power plants?

In the early 20th Century a small hydroelectric plant was built near the village.