The North Carolina Utilities Commission on Nov. 26 approved Duke Energy Progress LLC’s proposed decrement rate to reflect about $103.88 million in annual revenue impact from the federal tax law that slashed income tax rates to 21 percent from 35 percent effective Jan. 1. The change will offset a rate hike slated to go into effect Dec. 1 for fuel charges and other costs. The commission said that changing rates one time for the three other rate components, including a fuel rider of $7.29 per 1,000 kilowatt-hour along with the federal income tax change, will allow for one combined customer notice that would be less confusing while mitigating the increase resulting from the riders. Duke Energy Progress LLC is a subsidiary of Duke Energy Corporation.