The partially constructed plant was purchased in 2007 by AEP through its AEP Generating Company subsidiary from Dresden Energy, a subsidiary of Dominion, for approximately $85m.
AEP expects the plant to be operational during the first quarter of 2012.
When completed, the Dresden plant will be a nominal 580MW natural gas-fired combined-cycle plant.
AEP chairman and CEO Michael Morris said that the completion of the Dresden plant will provide AEP the cost-effective solution to meet its customers’ energy needs.
"As we continue to diversify our generating fleet, the time is right to accelerate construction of this plant," Morris said.