Comments requested by Aug. 2 regarding Dominion’s proposed 230-kV rebuild project

The commission said that the company anticipates a Dec. 30, 2022 in-service date for the proposed project, subject to commission approval and outage scheduling

Persons interested in Virginia Electric and Power’s (Dominion) May application for a certificate of public convenience and necessity (CPCN) to rebuild about 11.1 miles of the existing 230-kV, overhead, single-circuit transmission Line #247 are to file written comments on the matter with the Virginia State Corporation Commission by Aug. 2.

The commission also said in its June 5 order for notice and comment that the company seeks approval to:

  • Rebuild, entirely within existing right of way (ROW) or on company owned property, about 31.2 miles of its existing 230-kV transmission Line #247 on single-circuit structures, of which 11.1 miles are located in Virginia – in the City of Suffolk – between the Suffolk substation and the Virginia state line – which runs from Structure #247/1A through Structure #247/103 – with the remaining portion of the line located in North Carolina
  • Perform minor work at the existing Suffolk substation including conductor work for line terminal rating upgrades and fiber installation for communication upgrades

As noted in the order, the proposed route for the Virginia Rebuild Project is located within an approximately 11.1-mile right of way (ROW) currently occupied by an existing 230-kV transmission corridor. The existing transmission corridor ROW for the proposed route originates at the company’s existing Suffolk substation in the City of Suffolk and heads slightly southwest for about 2.3 miles. The order also noted that the route then heads in a generally south direction for an additional approximately 8.8 miles, crossing Meadow Country Road, Skeetertown Road, Babbtown Road, White Marsh Road, Clay Hill Road, Carolina Road, Adams Swamp Road, and Deer Forest Road before reaching the Virginia state line.

From Structure #247/1A within the Suffolk substation to Structure #247/39 – about 4.1 miles – Line #247 shares the existing transmission corridor, which is about 185 feet wide, with existing Line #246. The order added that at Structure #247/39, the existing ROW narrows to 100 feet wide for the remaining approximately seven miles to the Virginia state line – Structure #247/103.

For the proposed project, Dominion proposes to replace 98 230-kV wood/wood pole equivalent H-frame structures and six 230-kV wood/wood pole equivalent three-pole structures supporting Line #247 with 101 230-kV weathering steel H-frame structures and three 230-kV weathering steel three-pole structures.

The commission added that the company seeks approval in its application of only the Virginia portion of the line.

Dominion represents that the proposed project would replace aging infrastructure that is at the end of its service life to comply with the company’s mandatory transmission planning criteria, thereby enabling the company to maintain the overall long-term reliability of its transmission system.

The commission also said that the company anticipates a Dec. 30, 2022 in-service date for the proposed project, subject to commission approval and outage scheduling. The company anticipates the proposed project would cost about $17.2m, including $17.1m for transmission-related work and about $0.1m for substation-related work (2019 dollars), the commission said.

Among other things, the commission said that its staff is to file with the commission clerk by Sept. 24 a report containing its findings and recommendations.

About Corina Rivera-Linares 2807 Articles
Corina Rivera-Linares, chief editor for TransmissionHub, has covered the U.S. power industry for the past 13 years. Before joining TransmissionHub, Corina covered renewable energy and environmental issues, as well as transmission, generation, regulation, legislation and ISO/RTO matters at SNL Financial. She has also covered such topics as health, politics and education for weekly newspapers and national magazines. She can be reached at corinar@pennwell.com.