SPRING CITY, Tenn. (AP) - The Tennessee Valley Authority says work on the Watts Bar Nuclear Plant is more than 90 percent complete.

The federal agency announced a target completion date for the plant's Unit 2 reactor of December 2015.

It said this week that the reactor continues to meet safety and quality targets and remains on schedule and within budget.

The facility is on course to become the nation's first new nuclear generating plant of the 21st century.

About 3,200 workers are on the Watts Bar 2 project, which will be TVA's seventh nuclear unit. Watts Bar 2 will add 1,100 megawatts of electricity, providing enough energy for approximately 650,000 homes.

TVA is the nation's largest public utility, supplying power to about 9 million people in Tennessee, Alabama, Mississippi, Kentucky, Georgia, North Carolina and Virginia.