On May 1, 2005, at 12:01 a.m., Dominion, the largest utility in Virginia, successfully transferred operational control of its 6,000-plus miles of high-voltage transmission lines to PJM Interconnection, LLC (PJM). Dominion's transfer follows the integration of the Duquesne Light transmission system earlier this year, as well as the Commonwealth Edison, American Electric Power, and Dayton Power & Light transmission systems, which occurred in 2004, making PJM the nation's largest regional transmission organization.
As a result of the transfer, PJM now manages the dispatch of generation and the flow of wholesale electricity over Dominion's transmission lines, making available to Dominion's customers over 160,000 MWs of installed capacity. This integration is expected to improve market liquidity and price transparency, thereby increasing reliability, economic benefits and market efficiency for the Dominion region.
Dominion was granted the approval for its integration by the North Carolina Utilities Commission on April 19, 2005. The Virginia State Corporation Commission and FERC had earlier granted Dominion approval to integrate into PJM on November 10, 2004 and October 5, 2004, respectively. See UPDATE (10/29/04). [UPDATE]