Hydropower

Hydroelectric Power

Powered by water

Hydroelectric power or hydropower is a clean energy source that generates about 10% of the nation’s energy.  While simple in concept, hydroelectric power is highly efficient and environmentally friendly.

Traditional Hyrdropower

Traditional Hydropower

Dominion Energy hydroelectric power stations are unique in design and operation. Electricity produced by the stations generally is used to supplement the power generated at the company's other stations during periods of high energy demand. The most common type of hydroelectric power uses a dam on a river to store water in a reservoir. Water released from the reservoir flows through a turbine, spinning it, which in turn activates a generator to produce electricity.

But hydroelectric power doesn't necessarily require a large dam. Some hydroelectric power plants just use a small canal to channel the river water through a turbine.

Pumped Hydroelectric Storage

Pumped storage

Pumped storage plants such as Bath County Pumped Storage Station can even store power. The energy is sent from a power grid into the electric generators. The generators then spin the turbines backward, which causes the turbines to pump water from a river or lower reservoir to an upper reservoir, where the power is stored.

To use the power, the water is released from the upper reservoir back down into the river or lower reservoir. This spins the turbines forward, activating the generators to produce electricity.

Bath County Hydroelectric Storage Facility The Bath County Pumped Storage Station is the largest of its kind in the world, capable of powering 750,000 households - more than the Hoover Dam.

Long-Term Dominion Energy Forecast