The Atlanta-based company, which is the parent of Georgia Power, forecasts it will cost $149 million more for its share of the project. It said Georgia Power could eventually ask state regulators to charge customers for the increase.
Southern also reported on Thursday quarterly declines in its latest revenue and profits, compared to a year ago, as overall electricity use fell with the pandemic and the battered economy. Commercial and industrial customers used far less electricity. But residential electricity use rose 5% as people spent more time at home.