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Renewable Energy Developers

We look forward to working with you!

Are you interested in developing a solar project and interconnecting it with Dominion Energy's system? Use the South Carolina Public Service Commission approved processes below. Note that these processes pertain only to interconnection. For more information on how to sell power back to Dominion Energy, please visit Solar For Your Business.

Our Guidelines

Fast Track Process

Eligibility depends on the type and size of the generator, voltage of the line and the location of the Point of Interconnection. Generators greater than 2 MW or not connecting to DESC's Distribution System are ineligible.

Study Process

This process is issued for all systems that are ineligible or fail the Inverter Process or Fast-Track Process.

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Generator Capacity Process Application Fee
> 20 kW to 100 kW Fast Track $250
> 100 kW to 2 MW Fast Track $500
> 2 MW Study $10,000 deposit + $1 per kWac of generator capacity

Steps for Interconnecting

  1. Review Procedures & Guidelines

    SC Generator Interconnection Procedure

    Learn about the Pre-Application in section 1.2 and the Fast Track Process in section 3.

    Dominion Energy Customer Guide

    Review this summary of the South Carolina Generator Interconnection Procedure (SCGIP).

employee next to row of solar panels

  1. Complete Application Forms

    Pre-Application Request (Optional)

    Complete this optional Pre-Application Request form to receive valuable information on the Dominion Energy system at your desired Point of Interconnection. This helps you conduct a preliminary evaluation of your site without incurring the expense of preparing a full Interconnection Request.

    You should email the completed form to: SCElectricTransmission@DominionEnergy.com.

    Generation Interconnection Request

  1. Pay the Application Fee

    • Application Fee is based on the size of your project.
      • $250 for > 20 kW up to 100 kW
      • $500 for > 100 kW up to 1,000 kW
      • $100 for ≤ 20 kW that exceeded the reserve circuit phase capacity requirement
    • Pay online ($3.50 Convenience Charge per transaction) via BillMatrix.
    • Or mail your check to:
      • Dominion Energy SC – Transmission Support Team
        Mail Code J-36
        Dominion Energy South Carolina, Inc.
        220 Operation Way
        Cayce, SC 29033

  1. Receive Queue Number from Dominion Energy

    The queue number is used to determine the priority for interconnection service and the cost responsibility for the upgrades necessary to accommodate the interconnection. A lower queue number will be studied prior to a higher one.

  1. Receive Approval of Application

    Receive approval from Dominion Energy to interconnect your system and execute an Interconnection Agreement.

  1. Inspection and Final Approval

    After testing, and upon successful inspection by Dominion Energy, receive final approval from Dominion Energy to energize your system.

  1. Use System

    You may now begin commercial operation.

Download Interconnection Queue
Minimum Generation Curtailment Procedure
Generator Interconnection Reform

Frequently Asked Questions

Am I required to submit a Pre-Application Request before submitting an Interconnection Request?

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Pre-Application Requests are optional. However, a Pre-Application Report can provide valuable information on the Dominion Energy system that can be utilized to evaluate interconnection sites without incurring the expense of preparing a full Interconnection Request.

Will I get a queue number if I submit a Pre-Application Request?

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Pre-Application Reports provide only a snap-shot of the requested portion of the Dominion Energy system at the time of the report. A Pre-Application Request does not establish a queue position in the Dominion Energy Interconnection Queue.

What happens if my project fails the Fast Track Process?

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If your project fails the Fast Track Process, it can be evaluation under a Supplemental Review Process or the Study Process, whichever is applicable to your specific project.

Are Fast Track Application Fees refunded?

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Fast Track Application Fees are intended to offset Dominion Energy’s cost of evaluating interconnection requests. Application Fees are not refundable.

Are Study Deposits refundable?

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Study Deposits are intended to offset Dominion Energy’s cost of evaluating and interconnecting generation projects. Dominion Energy will track the costs associated with an individual project. After the project’s completion, Dominion Energy will reconcile the cost to the deposit(s) provided. Dominion Energy will refund any over-collected amounts. If the costs exceed the deposit(s), the Interconnecting Customer will be invoiced for the remaining balance.

Solar Programs

Dominion Energy Solar Panels

If you're considering a small system less than 20kW for your business, please review our other solar programs.

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