Global transmission capacity was estimated to have reached 20,397,232MVA by the end of 2022 and is forecasted to grow to 28,341,693MVA by 2028. the US had 3,904,546MVA of capacity in 2022 and this is expected to rise to 3,946,581MVA by 2028. Listed below are the five largest transmission projects by capacity in the US, according to GlobalData’s power database. GlobalData uses proprietary data and analytics to provide a complete picture of the global transmission segment. Buy the latest transmission substation project profiles here.

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1. Adams Substation – New – 765 kV

Adams Substation – New – 765 kV is a 765kV substation located at Adams, Colorado, the US. The substation is planned and is expected to be commissioned in 2024. The Adams Substation – New – 765 kV will be operated by Xcel Energy Inc.

The designed voltage level of the substation is 765kV and the operating voltage level is 765kV. The step in voltage of the project is 765kV. Upon completion, the substation will be able to operate at 2640MVA.

Adams Substation – New – 765 kV is owned by Xcel Energy Inc.

2. Cliffside Steam Substation

Cliffside Steam Substation is a 765kV substation located at Petersburg, Indiana, the US. The substation is under construction and is expected to be commissioned in 2024. The Cliffside Steam Substation will be operated by AES Indiana.

The designed voltage level of the substation is 765kV and the operating voltage level is 765kV. The step in voltage of the project is 765kV.

Cliffside Steam Substation is owned by AES Indiana.

3. North La Crosse Substation – Upgrade – 765 kV

North La Crosse Substation – Upgrade – 765 kV is a 765kV substation located at North La Crosse, Wisconsin, the US. The substation is proposed and is expected to be commissioned in 2026. The North La Crosse Substation – Upgrade – 765 kV will be operated by Dairyland Power Cooperative.

The designed voltage level of the substation is 765kV and the operating voltage level is 765kV. The step in voltage of the project is 765kV.

North La Crosse Substation – Upgrade – 765 kV is owned by Dairyland Power Cooperative. Buy the profile here.

4. Petersburg Substation – Upgrade – 765 kV

Petersburg Substation – Upgrade – 765 kV is a 765kV substation located at Petersburg, Indiana, the US. The substation is planned and is expected to be commissioned in 2024. The Petersburg Substation – Upgrade – 765 kV will be operated by AES Indiana.

The designed voltage level of the substation is 765kV and the operating voltage level is 765kV. The step in voltage of the project is 765kV.

Petersburg Substation – Upgrade – 765 kV is owned by AES Indiana. Buy the profile here.

5. Woodbury County Substation

Woodbury County Substation is a 765/345kV substation located at Raun, Iowa, the US. The substation is planned and is expected to be commissioned in 2024. The Woodbury County Substation will be operated by MidAmerican Energy Co.

The designed voltage level of the substation is 765/345kV and the operating voltage level is 765/345kV. The step in voltage of the project is 765kV and the step out voltage is 345kV. Upon completion, the substation will be able to operate at 1200MVA.

Woodbury County Substation is owned by MidAmerican Energy Co.

For more details on the latest transmission substation projects, buy the project profiles here.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData’s Power Intelligence Center provides detailed profiles of over 170,000 active, planned and under construction power plants worldwide, while its capacity and generation database provides historic and forecast power generation and generation capacity by technology as well as consumption, imports and exports for over 170 countries.