Mr McCullough has served as American Electric Power’s (AEP’s) vice president of fossil and hydro generation and baseload assets since 2003. He succeeds Bill Sigmon, who was named AEP’s senior vice president for engineering, projects and field services on November 1, 2007.

In his new position, Mr McCullough will be responsible for AEP’s fleet of approximately 36,000MW of fossil and hydro generation. He will also oversee plant engineering and environmental services, asset and outage planning and technical skills and process optimization.

Nick Akins, AEP’s executive vice president of generation, said: Mark’s depth of experience in generation operations and his level of interaction with commercial operations, outage planning and strategic planning for our generation assets will provide tremendous value to AEP and our utility operating companies.