ATLANTA (AP) — Construction of a first-of-its-kind nuclear power plant in Georgia will be delayed by more than a year, likely causing hundreds of millions of dollars in extra costs, according to a report from a state-hired monitor.

Atlanta-based Southern Co. and its partners are spending an estimated $14 billion to build the first nuclear plant erected from scratch in the U.S. in a generation. The first of the new reactors at Plant Vogtle was supposed to be finished on April 1, 2016, with the second reactor a year later.