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Matta Substation
Due to growing energy demands in your area, Dominion Energy is installing new electric transmission infrastructure which includes a new substation. This new infrastructure will continue reliable energy service and maintain compliance with federal reliability standards
New substation and infrastructure will be installed to continue reliable energy service and maintain compliance with federal reliability standards.
Benefits
- Complies with mandatory standards to ensure safety, reliability and to meet future needs
- Strengthens area reliability
- Strengthens operational flexibility
Project Schedule
- September 2025 Pre-construction outreach
- October 2025 – Early 2026 Pre-construction work
- February 2026 Construction begins
- Late 2026 Construction complete, restoration begins
Frequently Asked Questions
A substation is a facility that changes voltage from high to low or from low to high, among other important functions. When electric transmission lines enter a substation, the voltage is lowered using transformers. The lower voltage electricity is delivered to customers using electric distribution lines.
Due to recent growth and future development on the horizon in Caroline County, there is a need for new electric transmission infrastructure investments to maintain grid reliability. This new infrastructure will allow us to meet the growing energy needs, continue reliable electric service, and maintain compliance with federal reliability standards.
Work will be completed during permitted construction hours. You can expect to see crews on foot or in vehicles accessing the right of way, which may include the use of access roads outside the right of way.
Your electric service is not expected to be interrupted because of this project. If there are any planned temporary disruptions to your power supply, we will make every effort to notify you in advance.
The new substation will resemble the New Post substation currently on Massaponax Church Road in Spotsylvania County, Virginia.
For more information, contact our team by sending an email to powerline@dominionenergy.com or by calling +1 888-291-0190.
Construction-Related Impacts

Service Interruption
Your electric service is not expected to be impacted by this project.

Traffic
This project is not expected to impact traffic.

Noise
Noise levels will be minimal; permits are in place.
