Bechtel announced Thursday the completion of work on the Stonewall Energy Facility south of Leesburg. Owned by Panda Power Funds, the natural gas-fired 778-megawatt combined-cycle generating station can supply electricity for up to 778,000 homes.
The construction wrapped up ahead of schedule and under budget and the plant began to supply power to the grid late last week.
The project involved the installation of 1.4 million linear feet of electrical cable, 113,161 feet of pipe, and 890 tons of steel. More than 1.6 million man hours were put in by more than 700 workers.
Initial tests show the plant is exceeding performance guarantees for both power output and efficiency, according to Panda Power Funds.
The station was built by a turn-key consortium of Siemens Energy Inc. and Bechtel Corp. Siemens provided the power island package—including the natural gas turbines, steam turbine, generators, heat recovery steam generators, and instrumentation and controls systems. Bechtel was responsible for the engineering and procurement for the balance of the plant, and the construction and commissioning of the facility.
“Panda Stonewall is one of the newest, cleanest and most efficient natural gas-fueled power plants in the United States,” stated Todd W. Carter, CEO and senior partner of Panda Power Funds. “Entering commercial operations represents the ultimate success of Panda’s, Bechtel’s and Siemens’ three-year collaboration on Stonewall.”
The Stonewall plant was projected to contribute $7.1 billion to Virginia’s economy during the construction phase and the plant’s first 10 years of operation.
The plant employs 27 full-time employees to oversee operations and maintenance of the facility.
The Panda Stonewall plant was designed to minimize impacts to the local community including the use of advanced emissions-control technology. The generating station also uses reclaimed water that is piped from Town of Leesburg to cool the facility.
The project has its origins with a local developer, Andrews Community Investments. Starting in 2008, the team led by John A. Andrews and Jordan Dimoff worked with the Town of Leesburg and Loudoun Board of Supervisors to win local and state approvals for the power plant on the 100-acre property. With those approvals in hand, Dallas-based Panda invested in the project and began site work on the Stonewall facility in 2014.
Gas can be supplied to the Stonewall facility from either of two 30-inch gas pipelines, individually owned by Dominion Resources and Columbia Gas, which pass through the plant site. The plant connects to the grid through an existing Dominion Virginia Power 230-kV line that traverses the site between the Pleasant View and Brambleton substations.