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Hydroelectric Power: A Renewable Energy Source

We've been in the business of clean energy since we first started the company with hydropower. Today, we are the largest water manager in the state. We are dedicated to preserving this natural resource. It not only provides electricity to Alabamians but also supports other needs, such as drinking water supply, flood control, recreation and wildlife and fish habitats.

What is hydropower?

Hydroelectric power, or hydropower, harnesses the force of falling water to produce electricity. It has a long and rich history, proving to be reliable for more than a century. We constructed the initial facility, Lay Dam, on the Coosa River in 1914. This led to the construction of 14 hydroelectric power plants on three river systems in the state. Altogether, hydropower plants generate about 7% of Alabama Power’s total electricity.

Harnessing the power of water

Our reservoirs contain more than 157,000 acres of water, which we depend on both to produce electricity and to cool down our hydroelectric plants. Water is drawn from the reservoir through a pipe, also called a penstock, and spins the blades of a turbine and generator.

The generator converts the kinetic energy of the water to electricity. The flow of water and the elevation directly determine the amount of electricity that can be generated. The voltage of this electricity is then calibrated through a transformer and fed into the power grid through a transmission line, ultimately powering homes, businesses and industries.

Benefits of generating hydroelectric power:

Habitat Growth and Recreation

Our reservoirs are home to a variety of wildlife, including bass, crappie, bluegill and catfish. They also offer recreational opportunities, such as swimming, boating and fishing. They host local and national fishing tournaments, providing significant economic benefits to local communities.

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Emission-Free Process

Hydropower is clean energy, using the renewable source of water, namely rivers and streams fed by the natural water cycle, to generate electricity without producing carbon emissions.

Fast, Reliable Production

If needed, a hydroelectric plant can respond quickly and go from idle to full power in a matter of seconds. This quick-start capability helps ensure grid resiliency and flexibility during spikes in demand, major electricity outages or other disruptions.

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Low Cost

Hydropower provides affordable electricity and durability compared to other sources of energy.

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Flood Control

Hydropower helps reduce the risk of flooding because many of our reservoirs can store floodwaters and release them after the event has passed.

Mapping it out

We are the largest water manager in the state, with 11 company-owned lakes along three river systems and a total of 14 hydroelectric power plants. From the Black Warrior River to the Coosa and Tallapoosa rivers – these waters help power a better Alabama.

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