The Tennessee Valley Authority says last month's storms are expected to cost the utility up to $200 million to replace lost power generation and to repair damaged transmission lines.

According to the Chattanooga Times Free Press, TVA restarted its oldest nuclear reactor at the Browns Ferry Nuclear Power Plant in north Alabama over the weekend. But the federal utility is still getting only limited power output from the plant more than three weeks after tornadoes cut power to it.

TVA's nuclear communications director Ray Golden said Monday that the Unit 1 reactor at Browns Ferry was operating at about 19 percent of its capacity. The two other reactors at Browns Ferry are still idle, although TVA is working to resume power generation at those units, Golden said.

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