Cleveland Electric Illuminating Company , commonly known as The Illuminating Company , was a publicly-traded operating company , that came under the control of Centerior , which had merged to form FirstEnergy .
Centerior was based in Independence , Ohio and existed as a publicly-traded holding company for only ten years , until its merger with Ohio Edison formed FirstEnergy in 1997 : *Cleveland Electric Illuminating Company , commonly known as The Illuminating Company ( formerly ) , was a publicly-traded operating company through 1986 , until it merged with Toledo Edison to come under the control of Centerior .
FirstEnergy