Water Power

New energy at an old dam

Since one nuclear power plant can take a decade and more than $3 billion to build, and scares nearly everyone living within 50 miles, it may be better to build dozens of quietly humming, nonpolluting small dams to generate electricity. They could nestle right into some long-abandoned textile-or lumbermill dam, and draw their power from the flowing river water. That is a proposal now being tested in several New England states.

Like the wood stove and the windmill, hydroelectric power is making a comeback. This week the largest...

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