hydroelectric

American  

[hahy-droh-i-lek-trik] / ˌhaɪ droʊ ɪˈlɛk trɪk /

adjective

1. pertaining to the generation and distribution of electricity derived from the energy of falling water or any other hydraulic source.

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hydroelectric British  

/ ˌhaɪdrəʊɪlɛkˈtrɪsɪtɪ, -ˌiːlɛk-, ˌhaɪdrəʊɪˈlɛktrɪk /

adjective

1. generated by the pressure of falling water

   hydroelectric power

2. of or concerned with the generation of electricity by water pressure

   a hydroelectric scheme

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Other Word Forms

• hydroelectricity noun

Etymology

Origin of hydroelectric

First recorded in 1825–35; hydro- ¹ + electric

Example Sentences

Switzerland has a more diverse energy mix—including nuclear and hydroelectric power—compared with other countries, and fixed electricity prices for consumers set once a year.

From The Wall Street Journal • Mar. 19, 2026

"There is no scenario in which we can be dependent," he said on a visit to a hydroelectric dam in eastern France.

From Barron's • Feb. 12, 2026

He compared the process to a hydroelectric system.

From Science Daily • Jan. 5, 2026

He transitioned into a key negotiator with stakeholders including tribes and the federal government, leading to the takedown of four hydroelectric dams.

From Los Angeles Times • Dec. 30, 2025

That means turning to wind, solar, and hydroelectric systems for power instead of coal, oil, and natural gas.

From "1919 The Year That Changed America" by Martin W. Sandler