alternative energy

American  

noun

1. energy, as solar, wind, or nuclear energy, that can replace or supplement traditional fossil-fuel sources, as coal, oil, and natural gas.

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alternative energy British  

noun

1. Also called: renewable energy.  a form of energy derived from a natural source, such as the sun, wind, tides, or waves

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Etymology

Origin of alternative energy

First recorded in 1970–75

Example Sentences

Its defense contractors have been one of the few areas of strength in local stock markets, but another is its alternative energy sector.

From The Wall Street Journal • Mar. 11, 2026

Big Tech companies may increasingly also pursue alternative energy sources as well.

From MarketWatch • Jan. 17, 2026

Asked by a Barron’s reporter on Tuesday about whether API would back offshore wind in order to get a permitting deal, Sommers said his group is working with trade groups for alternative energy.

From Barron's • Jan. 13, 2026

And some of the carbon-free alternative energy sources that could meet their power needs are deeply controversial among environmentalists.

From Los Angeles Times • Dec. 13, 2025

The Energy Security Act also provides significant incentives for the development of gasohol and biomass fuels, thereby enhancing the nation's supply of alternative energy sources.

From State of the Union Address by Carter, Jimmy