Xcel Energy electric rates are going up once again in Minnesota.
The state Public Utilities Commission on Thursday approved a 4.6 percent interim rate increase in January. It is the sixth rate hike in eight years and comes just months after regulators finalized Xcel's 2013 rate hike — a 3.8 percent increase that was significantly less than what the utility had sought.
The utility said the increase is driven largely by capital spending, including work on its Monticello and Prairie Island nuclear plants.
"We are moving through a period of peak investment," said Chris Clark, regional vice president for rates and regulation at the Minneapolis-based utility.
The interim rate hike will apply at least through 2014 while regulators review Xcel's request for a permanent 10.4 percent increase that would be phased in over two years.
The commission rejected a request from the state attorney general's office for no interim rate hike.
"We have back-to-back-to-back rate cases," said Assistant Attorney General Ian Dobson, whose office represents consumer interests.
For the average residential customer using 675 kilowatt-hours per month, a monthly bill will go up $4 to $84.39 in January. The monthly increase in 2015 would be about $6.25 for the same customer under Xcel's proposed two-year rate plan.