Georgia Power told state regulators that it wants to keep building new nuclear reactors at Plant Vogtle, despite delays expected to nearly double their ultimate price tag.

The Atlanta utility, the main partner in the project, told regulators Thursday in a filing that its cost to finish the plant is about $4.5 billion, boosting its total to about $8.8 billion.

It has said the two new reactors, less than half-finished, can be completed by November, 2022 — about two years beyond previous estimates. They were originally supposed to be done this year, eight years after work began.

The utility said finishing the project after a key contractor’s bankruptcy still makes more sense than other alternatives, including abandoning the project near Augusta, or building a power plant at another site that burns natural gas.

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