About 200 gallons of oil leaked at the Monticello nuclear power plant Tuesday during routine maintenance, with some of the ...

Xcel Energy is responding to an oil leak at its nuclear plant along the Mississippi River in Monticello.

Xcel steps up pumping at Monticello nuke plant as radioactive water moves toward Mississippi River The water is testing close to the EPA’s safety threshold for tritium, but Minnesota agencies say ...

Plant personnel said no oil reached the river, but Xcel Energy says it has set up oil spill containment and absorbent booms as a preventive measure.