Warren County Generating Station: Overall Project of the Year and Best Natural Gas-Fired Project

Warren County Generating Station: Overall Project of the Year and Best Natural Gas-Fired Project

By Power Engineering

The PJM Interconnection LLC said Virginia-based utility Dominion needs 5,600 MW of generation in its service area by 2019. The 1,346-MW Warren County Power Station in Virginia was engineered and built by Warren County Energy Partners, a joint venture of Zachry and Burns and McDonnell, to help close that gap. The plant uses a 3-on-1 configuration with Mitsubishi Hitachi Power Systems Americas 501GAC combustion turbines, a 573-MW steam turbine, and Alstom heat recovery steam generators. The plant uses a thermal energy storage system and chillers from DN Tanks and Turbine Air Systems to reduce water use, store energy, and reduce its parasitic power load during peak demand. The system helps increase power output by approximately 130 MW on a 92-degree day.

Due to numerous underground voids, approximately 2,800 micropiles were drilled to support the major equipment. Three offsite laydown yards were constructed to store materials due to space constraints at the site. The city set stringent limits on the supply of water to the site and the wastewater discharge to the city, which required logistical planning for key commissioning events.

Zachry and its employees raised more than $900,000 for the United Way of Front Royal/Warren County.