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The Pathway to 90% Clean Electricity Is Mostly Clear. The Last 10%, Not So Much

Inside Climate News · Dan Gearino · last updated

The United States gets about 40 percent of its electricity from carbon-free sources, including renewables and nuclear, and researchers have a pretty good idea of how to cost-effectively get to about 90 percent.

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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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