Thousands of college students regularly hit the cardio exercise machines to work off stress after an exam or stay in shape. Oregon State University (OSU) is harnessing the energy the machines can generate and converting it to electricity to feed back into the power grid.

It is among the first universities in the United States to do so.

With new technology developed by a Florida firm, Oregon State has retrofitted 22 elliptical exercise machines in its student fee-funded Dixon Recreation Center and already is collecting the power produced by students.

The effort will produce an estimated 3,500 kilowatt hours of electricity in a


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