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Brainerd, Minn., looking at sewers as energy source

Published 05/26/2012

Brainerd officials are looking at an unconventional place for a future energy source: the sewers. Brainerd-based Hidden Fuels began working with the city and the school district in 2009 and later installed sensors in the sewers. For more than a year they measured the temperature and the amount of sewage running through them.

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