(CNN) The Tennessee Valley Authority is celebrating an event 43 years in the making: the completion of the Watts Bar Nuclear Plant.
In 1973, the TVA, one of the nation's largest public power providers, began building two reactors that combined promised to generate enough power to light up 1.3 million homes.
The first reactor, delayed by design flaws, eventually went live in 1996. Now, after billions of dollars in budget overruns, the second reactor has finally started sending power to homes and businesses.
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