Southern Co.'s project to build a new nuclear plant in Georgia remains under budget, though it faces upward pressure on costs.

Utility executives will testify Wednesday about the progress of the Plant Vogtle project during a hearing of the state's Public Service Commission.

In public filings, the Southern Co. said it spent more than $2 billion through last year on the project to build the two new reactors near Augusta. State utility regulators have allowed the utility to spend more than $6 billion as its share of the project cost.

The utility has said there will be increased costs to finish the job. But the utility is still negotiating with its business partners over who is responsible, meaning it's possible that the utility and its customers won't foot the bill.

Tags: Southern Company, Plant Vogtle, Georgia Public Service Commission, nuclear power