Parallel Generation and Interconnection
"Parallel generation" refers to a generator that produces electricity while it is connected to the electric grid. Your electrician or consultant can tell you whether your generator will operate in parallel.
You must obtain permission to interconnect your parallel generator to Dominion Energy’s electric grid. There are important steps to follow to ensure proper and safe interconnection. Interconnections must be individually accepted and inspected prior to beginning parallel operation.
There are several options available for interconnecting your parallel generator, including net metering or selling the generator output. Specific requirements will vary depending on whether your project is located in Virginia or North Carolina, and whether it is a distribution or transmission interconnection. Please see Frequently Asked Questions (FAQ) for definitions and additional information about interconnection options. Overview – Interconnection Steps provides a listing of the basic steps for interconnecting your generator. Please consult Dominion Energy’s Blue Book - Information and Requirements for Electric Service. Section 190 of the Blue Book has information regarding customer generation.
If your generator is fueled entirely by renewable energy you may be able to sign up for net metering, where any power in excess of what you consume is fed back to the electric grid to offset future consumption. To learn more, see the Net Metering Terms and Conditions for either Dominion Energy Virginia or Dominion Energy North Carolina, or or visit the Net Metering homepage.
Interconnection Under Federal Jurisdiction
Many interconnections to our distribution system involve federal jurisdiction. Since all requests involving federal jurisdiction are processed by PJM Interconnection, you should initially contact PJM about your request. Depending upon the characteristics of your interconnection, PJM will either process your request or suggest that you contact us to process your request under state jurisdiction. PJM Interconnection is the regional transmission organization (RTO) that administers many of the interconnections to Dominion Energy’s system in accordance with the PJM Open Access Transmission Tariff (OATT). Additional information about PJM Generator Interconnection Procedures is available on the PJM website.
Interconnections to Dominion Energy’s transmission system must also comply with our Facility Connection Requirements. Additional information about Dominion Energy’s electric transmission system including PJM OATT, informational postings/notices required by Federal mandates, and electric transmission planning and statistics are available on the Electric Transmission web page.
Interconnection Under State Jurisdiction
If your interconnection does not involve federal jurisdiction, your request will be processed in accordance with the appropriate state requirements. To initiate a request for either Virginia or North Carolina, prepare a complete interconnection request as provided for in the appropriate state rules and submit it to the Dominion Energy address shown below (under "More Information").
Dominion Energy Virginia
State jurisdictional interconnections In Virginia are subject to the Regulations Governing Interconnection of Small Electrical Generators, in Chapter 314 of the Virginia Administrative Code and Dominion Energy Virginia's Terms and Conditions regarding interconnections. The Regulations Governing Interconnection of Small Electrical Generators provide information, application forms, and requirements for interconnection and parallel operation of customer-owned generating facilities in Virginia.
Dominion Energy North Carolina
The North Carolina Interconnection Standards provide information, application forms, and requirements for interconnection and parallel operation of customer-owned generating facilities in North Carolina. The North Carolina Interconnection Standard is attached to Section XXIV of Dominion Energy North Carolina’s Terms and Conditions.
For more information on generator interconnections or parallel operation, call 804-775-5658, email GeneratorInterconnects@dominionenergy.com, or write:
Dominion Energy Virginia/Dominion Energy North Carolina
One James River Plaza, 18th Floor
P.O. Box 26666
Richmond, Virginia 23261-6666