The following post was submitted by William Skaff, NEI's Director of Policy Development. The Sierra Club and Riverkeeper report, Treading Water, claims that the 316(b) rule governing cooling water intake structures of existing facilities should impose a national standard that requires the installation of cooling towers everywhere, preventing state environmental agencies from determining the best technology available at their sites for minimizing environmental impact. As the U.S. National Renewable Energy Laboratory reports, “[C]ooling tower technologies consume at least twice as much water as once-through cooling technologies” [emphasis added]. 1 That is, cooling towers consume twice as much of aquatic life habitat as once through cooling systems. Given that climate change modeling indicates freshwater constraints, why would we want a nation of cooling towers? How can doubling water consumption possibly protect fish in a water-constrained future? All cooling systems, inclu...
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