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Sep 22, 2022, 10:46 am152 pts
Ars Technica
Enlarge (credit: picture alliance via Getty) 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. But that last 10 percent? It gets expensive, and there…
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