Minnesota installs US’ first underwater turbine

Houston’s Hydro Green Energy installed the United States’ first underwater turbine on the Mississippi River near Hastings, Minnesota.

The new propeller has the ability to produce some 35 kilowatts of power, and will soon be joined by a second one that will produce about the same amount of electricity. Together, these turbines will increase the output of an upstream hydroelectric power plant by 5 percent. Moreover, although the figures may not seem like much now, keep in mind that these machines are built to operate in large numbers, and a simple calculus may show us that 400 of them can yield the same amount of current as the dam itself.

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