The Haymarket Project will meet the growing energy demands of western Prince William County and the Town of Haymarket, and improve electric reliability for all customers in the region. The new facilities include a substation that will provide service to hundreds of customers and transmission line to bring power to the substation.
(View larger version.)
July 26, 2018 – The Virginia State Corporation Commission (SCC) issued its final order approving the Haymarket transmission project along the I-66 Hybrid Route, including it in the underground transmission pilot program.
On June 12, the SCC issued its order reaffirming the need for the Haymarket transmission line. On July 2, we submitted to the SCC our official request to include the I-66 Hybrid Route in the underground electric transmission pilot program.
- Provide needed capacity to serve the rapid commercial, residential, and high tech sector growth in the area
- Help strengthen the electrical grid and improve overall reliability for the community, and
- Enable continued economic development in the area
The amount of load growth requires a new 230kV double circuit transmission line using existing transportation corridors where possible and requiring new right of way. The new line will extend to a new substation west of the Haymarket town limits.
The new substation, to be built on a shared commercial property, will accommodate future area growth. The combined efforts will provide Dominion Energy, and eventually NOVEC, additional capacity to support continued economic development and improved reliability for the area.
- Approximate total line length: 5.3 +/- miles (proposed project as filed)
- Overhead/Underground Hybrid Option: includes 2.2 +/- miles of overhead line, and 3.1 +/- miles of underground line
- New Overhead right of way corridor will be 100’ feet wide
- Structure Type: Single Shaft, Double Circuit, Average Height 112' - Typical structure comparison images (galvanized steel)
- New Underground right of way corridor will be approximately 40' feet wide (an additional 10 feet of temporary right of way will be needed during construction)
Outreach has included letters to neighboring property owners, email updates, local newspaper ads, and public meetings.
We strive to minimize the impacts of our new projects that require new right of way while being sensitive to the permanent change to the community we have an obligation to serve.
Dominion Energy considers a number of factors when studying options for routing new electric transmission lines. We evaluate a route’s constructability and operability while carefully weighing potential impacts on property owners, historic assets and the environment, to name a few. It is important that we study and present various alternatives in order to have a complete application for the SCC to consider, which must include a proposed route, as well as constructible alternative(s).
Ultimately, the SCC will make the final determination of the route location that reasonably minimizes impacts.
- I-66 Hybrid Route Alternative (as submitted for pilot program July 2, 2018)
- View Overview Map of initial route alternatives (as filed - Nov. 6, 2015)
- Originally Proposed Project: I-66 Overhead Detailed Map Set (as filed - Nov. 6, 2015)
- I-66 Overhead/Underground “Hybrid” Alternative Route Detailed Map Set (as filed - Nov. 6, 2015)
- Madison Alternative Route Detailed Map Set (as filed - Nov. 6, 2015)
- Railroad Alternative Route Detailed Map Set (as filed - Nov. 6, 2015) – No longer constructible
- Carver Road Alternative Route Detailed Map Set (as filed - Nov. 6, 2015) – No longer constructible
Older Map Versions
- View Studied Route Alternatives (Updated June 24, 2015)
- I-66 Alternatives ("Hybrid" Overhead/Underground and Overhead options) Detailed Map Set
- Railroad Alternative Detailed Map Set
- Carver Road Alternative Detailed Map Set
- Madison Alternative Detailed Map Set
- View a map of environmental constraints. (As of Sept. 8, 2014 - although the routes have evolved, the constraints remain the same.)
- View a map of the route alternatives being evaluated. (Updated Nov. 24, 2014 and subject to change)
- View a detailed series of maps showing the full right of way width (Preliminary route as of Aug. 5, 2014 - this shows just one route but visually demonstrates the right of way that could potential be applied to other overhead routes).
- View a series of maps showing the alternative railroad alignment. (As of Sept. 8, 2014)
Photo simulations and diagrams provide representational views of proposed electric transmission facilities. All projects are subject to change and to final engineering.
The following simulation represents the overhead segment of the I-66 Hybrid Route Alternative; however, the route has undergone minor modifications since this was produced and therefore does not necessarily depict exact structure placement:
SCC Approval Process - Status Approved