(AP) — A former executive utility who gave rosy projections on the progress of two nuclear power plants in South Carolina while they were hopelessly behind will spend 15 months in prison for the doomed project that cost ratepayers billions of dollars. Byrne, 63, told state regulators in 2016 that construction of the plants would finish in time to get more than $1 billion in tax credits vital for SCANA and its subsidiary South Carolina Electric & Gas to afford the project. Since losing his job in 2018, Byrne has been building houses with Habitat for Humanity