The United States used only 34 percent of its total coal export capacity and does not need additional terminals, according to a new report that casts doubt on plans to develop new ports on the Columbia River.

The Institute for Energy Economics and Financial Analysis, a Cleveland-based nonprofit, released a report recently by Tom Sanzillo that concludes that the country’s existing coal ports are operating well below capacity.

The report concludes it would be folly to continue to pursue new coal export terminals, including several proposed for the Northwest.

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