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Power plants try burning wood with coal to cut carbon emissions Published: November 4, 2013

Even as the Environmental Protection Agency considers requiring existing coal-fired power plants to cut their carbon dioxide output, some utilities have started to use a decidedly low-tech additive that accomplishes that goal: wood.

Ranging in size from sawdust to chunks as big as soup cans, waste wood from paper mills, furniture factories and logging operations has been used with varying levels of success. Minnesota Power, which once generated almost all of its power from coal and is now trying to convert to one-third renewables and one-third natural gas, found that co-firing with wood was a quick way to move an old plant partly to the renewable category.

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