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 is little agreement about how to do it. A new paper in the journal Joule identifies six approaches for achieving that last 10 percent, including a reliance on wind and solar, a build-out of nuclear power, and development of long-term energy storage using hydrogen. This isn't a matter of one pathway winning out over the others, said Trieu Mai, the paper's lead author and senior energy researcher for the National Renewable Energy Laboratory in Golden, Colorado. "A 100 percent carbon-free power system will require a portfolio of resources," he said. "But humility is needed to accept that we don't know what the optimal mix to solving the last 10 percent" is going to be. The larger point, he said, is that researchers and industry need to be doing the work now to figure out which technologies are the most viable in order to meet the goal, set by the Biden administration, to get to net-zero emissions in… Read full this story
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The pathway to 90% clean electricity is mostly clear. The last 10%, not so much have 282 words, post on arstechnica.com at September 22, 2022. This is cached page on xBlogs. If you want remove this page, please contact us.