Climate Changed

Global Warming Is Bad for Everyone Except Dam Builders

Scientists built 130,000 “virtual dams” and found they could generate 7% of the world’s electricity in real life.

Photographer: Akos Stiller/Bloomberg
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Many look at the world’s melting ice and see glacier basins as half-empty. Swiss researchers see them as half-full of opportunities for hydropower and freshwater storage.

The largely theoretical study, published Wednesday in the journal Nature, examined 185,000 glaciers around the world and determined where environmental, technical and economic factors would allow for the building of dams to harness both the power of glacier melt and the value of water itself. If all such sites were tapped, the amount of electricity generated would equal 7% of the world’s total electricity consumption in 2015, or 35% of the world’s output from dams.