HELPER, Utah (AP) — One of Utah's smallest power plants will close next year because of new federal limits on mercury emissions.

The Salt Lake Tribune reports ( the Carbon Power Plant near Helper is being slated for early retirement after 60 years.

Rocky Mountain Power says the plant's location inside a tight canyon doesn't leave enough room for emissions controls that are being required of coal-fired power plants.

The utility would need to add a "bag house" to filter toxin-bearing particulates from the exhaust stacks.

Utah and Rocky Mountain Power will still rely heavily on coal-fired power — it accounts for 60 percent of the utility's generating output. Utilities are increasingly turning to cleaner-burning natural gas to make electricity.


Information from: The Salt Lake Tribune,