TransmissionHub brings an overview of transmission projects scheduled to be completed from 2021 to 2026, with a total worth of about $4.7 billion.
2021-2022
In April 2021, American Transmission Company (ATC) informed Wisconsin regulators that the completion of the Boscobel to Lone Rock transmission line (Line Y124) is expected in 4Q21, with a 1.7-mile segment of the line remaining to be built in coordination with Muscoda Utilities’ expansion of its industrial substation.
Among the projects expected to be in service in 2022 is Basin Electric Power Cooperative’s Neset-to-North Shore 230-kV transmission project in northwestern North Dakota, which includes the construction of a substation and an approximately 26.5-mile line that would extend from the existing Neset substation to the proposed Northshore substation. According to Basin Electric, the estimated project cost is $57 million.
Guadalupe Valley Electric Cooperative’s Delhi-to-Bluestem 138-kV transmission line project in Texas includes building a line between the Lower Colorado River Authority’s new Bluestem switching station and the proposed new Delhi substation. The estimated $23 million project is expected to be placed in service in August 2022.
2023-2026
Dominion plans an estimated $97 million Lanexa-Northern Neck 230-kV transmission project in 2023, which includes rebuilding about 38.3 miles of the existing 41.3-mile 230-kV line. The company’s desired in-service date is in December 2023.
Black Hills Energy’s estimated $42.3 million Sweetgrass Project in Wyoming includes the construction of the new 115 kV Sweetgrass substation and the new 115 kV and 24.9 kV Bison substation. The project’s planned in-service dates begin in 3Q22 and conclude in 2Q23.
Looking beyond 2023, Indiana Michigan Power plans to invest about $11 million in the Anderson Area Improvements Project, which involves rebuilding about four miles of 138-kV transmission line and upgrading a substation in Indiana. Project completion is scheduled in late 2024.
The Tennessee Valley Authority proposes to invest $28 million to build the new Locust Creek switching station in Tennessee, as well as about 14 miles of 161 kV transmission line by fall 2025.
Idaho Power plans to invest up to $1.2 billion in the 500 kV Boardman to Hemingway transmission project. Construction will begin in 2023 and the line is scheduled to be in service by 2026 or later.
Source: TransmissionHub