The Tennessee Valley Authority decided last week to allocate up to $400 million for the purchase of nuclear fuel processed through a cost-effective method of enriching uranium called "photoexcitation." The laser-based technology could reduce the cost of processing uranium for 12% of its fuel, the company said. Meanwhile, TVA has agreed to invest up to $8 billion by 2020 to complete projects at its Watts Bar nuclear station in Tennessee and Bellefonte plant in Hollywood, Ala.

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