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Renewables became second-most prevalent U.S. electricity source in 2020, per EIA

Renewable Energy World

The specific contribution from hydropower was not listed. peaked at 2,016 billion kWh in 2007, and much of that capacity has since been replaced by or converted to natural gas-fired generation. Coal-fired electricity generation in the U.S. Coal was the largest source of electricity in the U.S.

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Can Gas-Fired Power Plants Coexist with a Net-Zero Target? Yes, Southern Company Insists

GreenTechMedia

The 35-page plan offers far more detail than Southern Company has previously disclosed on how it intends to decarbonize a 44 GW generation portfolio that’s now about 52 percent natural gas, 13 percent coal, 17 percent nuclear and 18 percent “renewable and other." Department of Energy.

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Comment: Europe’s struggle to understand energy economics

Envirotec Magazine

Electricity generated by fuel, Denmark, 1971-2007. All the while, Denmark has been in a unique position to use wind power. The question remains how the European Commission can expect member states without access to offshore wind, or surplus hydropower for backup, to become independent of fossil fuels using wind energy.

Energy 147
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MIT Study: Transmission Is Key to a Low-Cost, Decarbonized US Grid

GreenTechMedia

All of these benefits can be captured with solar, wind, existing hydropower and lithium-ion battery technologies at projected 2030 prices, he added. It co-optimizes grid capacity investments and hourly operations costs of generation, storage, and transmission to meet projected electricity demand in 2040.