The Healy coal powered electric plant could be back online within two years. Golden Valley Electric in Fairbanks spent $50 million on the plant, which sits just outside of Denali National Park. The EPA is giving them 18 months to install $40 million worth of pollution controls. The utility also plans on spending $20 million to improve the safety of the operations. The experimental “clean coal” plant operated briefly in the late 1990s before closing in 2000 because of safety and reliability concerns.