Dominion’s service territory continues to be one of the fastest growth areas in PJM and Loudoun County is still experiencing above average electrical growth, primarily driven by data center development.
A crucial 13-mile line through Loudoun County is nearing the end of expected life and requires replacement to maintain reliability.
The proposed Loudoun to Pleasant View 500kV Rebuild Project reduces the risk of a major failure of the region’s high-voltage network without the need to obtain additional easements. No right-of-way expansion is needed for this rebuild project.
Approval is required by the Virginia State Corporation Commission (SCC). An application was filed with the SCC in October 2013.
The south terminal substation for the new line will be Mosby (adjacent to Loudoun) and the north terminal substation will be Goose Creek (near Pleasant View). At the conclusion of the Project, the rebuilt 500 kV Loudoun-Pleasant View Line #558 will be split and renamed as Brambleton-Goose Creek Line #558 and Brambleton-Mosby Line #590.
Rebuilding this line will:
NOT require new right-of-way
Replace aging infrastructure prior to equipment failure
Replace structures at, or very near, the current locations with new structures, ranging from 30’-40’ taller (subject to final engineering)
Aging infrastructure -- This line through Loudoun County is a portion of the 350-mile "500kV loop" built in the mid-1960’s. After more than four decades of operation, the structures and equipment are approaching the end of their expected service life and require replacement to maintain reliability. Taking proactive steps now to replace the aging equipment before it fails will ensure greater reliability for our customers and the regional system.
Growth in local and regional demand -- Dominion's service territory continues to be one of the fastest growth areas in PJM and Loudoun County is still experiencing above average electrical growth, primarily driven by data center development.