Atlanta-based Southern Co., the parent of the electrical utility, announced Monday that it's pushing back the completion date from Oct. 31 to Nov. 30. That, in turn, is expected to add another $62 million, pushing the cost up to nearly $6.9 billion.
Documents filed with the Mississippi Public Service Commission show Mississippi Power will absorb $33 million, but customers could be asked to pay the other $29 million.
Southern Co. says it needs time restart part of the plant and integrate equipment.
The plant and associated coal mine were originally supposed to cost $2.9 billion at most. Customers could be asked to pay as much as $4.2 billion.