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In a Twist, Old Coal Plants Help Deliver Renewable Power. Here’s How.

The New York Times · Elena Shao · last updated

Across the country, aging and defunct coal-burning power plants are getting new lives as solar, battery and other renewable energy projects, partly because they have a decades-old feature that has become increasingly valuable: They are already wired into the power grid.

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Related Knowledge Center: ENERGY BASICS: electricity

State of Play

Electricity is a secondary energy source: it is generated through the conversion of primary energy sources such as natural gas, coal, solar, hydropower, and wind. Electricity’s versatility is not cost-free: a substantial amount of energy is lost in its generation and the cost of storage is high, compared with fuels such as coal, oil and natural gas. The economics of battery technology hold the key to expanded use of renewable sources to generate electricity.

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