Brookings County - Hampton Transmission Line Project
Project Details
Project Name
Brookings County - Hampton Transmission Line Project
Applicant
Location
Brown County, Dakota County, Le Sueur County, Lincoln County, Lyon County, Redwood County, Renville County, Rice County, Scott County, Sibley County, Yellow Medicine County
Description
A 237-mile 345 kilovolt (kV) transmission line and associated facilities running from Brookings County, South Dakota, to Hampton, Minnesota. The project began operation in 2015.
Status
active
Project Contact
Project Summary
The Commission issued a route permit for the 237-mile Brookings County to Hampton 345 kV transmission line in 2010, and the line was fully energized in 2015.
In November 2023, the CapX2020 Brookings Owners (Applicants) submitted a minor alteration application to the Commission seeking to install a second 345 kV circuit along two segmetns of the existing Brookings - Hampton 345 kV transmission line. The proposed change would happen on the 59.5-mile segment between the Brookings County and Lyon County substations and on the 39-mile segment between the Helena and Hampton substations. The Applicants have also applied to the Commission for a certificate of need for the project in August 2023 under Docket 23-200.
The Applicants indicated that the Project is needed to relieve current transmission congestion in this area. The Applicants plan to place the Western Segment in service by September 1, 2024, and the Eastern Segment in service by September 15, 2025.
Key Project Documents
| Date | Title | Description |
|---|---|---|
| 09/10/2012 | Commission Order Approving Minor Alteration and Issuing Permit Amendment (Amendment #3) | Commission order issuing a permit amendment for the Brookings to Hampton project. The amendment addresses the use of quadruple circuit specialty structures for the project |
| 02/29/2012 | Commission Order Approving Minor Alterations and Issuing Permit Amendment (Amendment #1) | Commission order issuing a permit amendment for the Brookings to Hampton project. The amendment addresses new maps, the size and location of the Hampton substation, and the number of conductors spanning Interstate 35 |
| 03/01/2011 | Route Permit for the Brookings to Hampton 345 kV Transmission Line Project | The Commission's route permit addendum for segment 4 of the Brookings to Hampton project, including links to route permit maps |
| 05/26/2015 | Commission Order Approving Minor Alteration for Cedar Lake Project | Commission order approving a minor alteration for temporary use of the open position on structures 044 through 068 of the Brookings project to carry a new 115 kV line |
| 07/10/2012 | Commission Order Approving Minor Alterations and Issuing Permit Amendment (Amendment #2) | Commission order issuing a permit amendment for the Brookings to Hampton project. The amendment addresses modifications in segment 3 of the project related to engineering constraints and landowner concerns |
| 09/14/2010 | Route Permit for the Brookings to Hampton 345 kV Transmission Line Project | The Commission's route permit for segments 1, 2, 3, 5, and 6 of the Brookings to Hampton project, including links to route permit maps |
| 07/18/2013 | Commission Order Approving Minor Alteration and Issuing Permit Amendment (Amendment #5) | Commission order approving a minor alteration for the Brookings to Hampton project. The amendment addresses a change in the route between structures 0961-006 and 0961-010 in segment 6 of the project |
| 10/15/2012 | Commission Order Approving Minor Alteration and Issuing Permit Amendment (Amendment #4) | Commission order issuing a permit amendment for the Brookings to Hampton project. The amendment addresses a change in the route between structures 243 and 250 in segment 3 of the project |
| 03/22/2024 | Environmental Report: 345 kV Brookings County-Lyon County and Helena-Hampton Second Circuit Project | The environmental report (ER) for the Brookings 2nd Circuit Project prepared by the Minnesota Department of Commerce. The ER analyzes the potential impacts of the project and possible mitigation measures. The ER also discusses the potential impacts of alternatives to the project itself. |
| 12/12/2023 | Application to the Minnesota Public Utilities Commission for a Minor Alteration of the CAPX2020 Brookings - Hampton Route Permit to Add the Brookings County - Lyon County and Helena - Hampton Second Circuit Project | Minor Alteration Application to add a second circuit to portions of the existing Brookings to Hampton 345 kV Transmission Line |
| 11/22/2023 | Certificate of Need Application: Brookings County - Lyon County and Helena - Hampton Second Circuit Project | Application for a Certificate of Need to add a second 345 kV circuit to portions of a second 345 kilovolt (kV) circuit on double-circuit-capable structures installed when the Brookings County – Hampton 345 kV transmission line was originally constructed. The Project will also require reconfiguring certain lines near substations, mostly within existing easements. |
| 01/26/2010 | Brookings-Hampton Transmission Project Final Environmental Impact Statement | The Final EIS responds to timely substantive comments received on the Draft EIS consistent with the Scoping Decision Document. The Final EIS also contains corrections/revisions to the Draft EIS. The Draft EIS and Final EIS serve as the complete EIS for the proposed project |
Docket Documents
View Project Documents (last 30) View All Project Documents
| Date | Document ID | On Behalf Of | Description |
|---|---|---|---|
| September 30, 2025 | 20259-223435-01 | Xcel Energy | Progress Report--September 2025 |
| September 30, 2025 | 20259-223435-02 | Xcel Energy | Complaint Summary--September 2025 |
| September 12, 2025 | 20259-222939-01 | Xcel Energy | Completion of Construction Notice, Eastern Segment |
| September 11, 2025 | 20259-222899-03 | Xcel Energy | As-Built Drawings Brookings Second-Circuit_Part 2 of 6 |
| September 11, 2025 | 20259-222899-01 | Xcel Energy | |
| September 11, 2025 | 20259-222899-08 | Xcel Energy | 2025.09.11 Certificate of Service |
| September 11, 2025 | 20259-222899-04 | Xcel Energy | As-Built Drawings Brookings Second-Circuit_Part 3 of 6 |
| September 11, 2025 | 20259-222899-05 | Xcel Energy | As-Built Drawings Brookings Second-Circuit_Part 4 of 6 |
| September 11, 2025 | 20259-222899-06 | Xcel Energy | As-Built Drawings Brookings Second-Circuit_Part 5 of 6 |
| September 11, 2025 | 20259-222899-07 | Xcel Energy | As-Built Drawings Brookings Second-Circuit_Part 6 of 6 |
| September 11, 2025 | 20259-222899-02 | Xcel Energy | As-Built Drawings Brookings Second-Circuit_Part 1 of 6 |
| August 28, 2025 | 20258-222531-01 | Xcel Energy | Progress Report--August 2025 |
| August 28, 2025 | 20258-222531-02 | Xcel Energy | Complaint Summary--August 2025 |
| July 30, 2025 | 20257-221575-03 | Xcel Energy | Complaint Summary--July 2025 |
| July 30, 2025 | 20257-221575-01 | Xcel Energy | Progress Report--July 2025 |
| June 30, 2025 | 20256-220508-01 | Xcel Energy | Progress Report--June 2025 |
| June 27, 2025 | 20256-220368-02 | Xcel Energy | Complaint Summary |
| May 23, 2025 | 20255-219227-01 | Xcel Energy | May 2025 Progress Report |
| May 12, 2025 | 20255-218815-01 | Xcel Energy | Landowner Complaints |
| April 4, 2025 | 20254-217257-01 | Xcel Energy | Field Representative and Complaint Procedures – Eastern Segment |
| April 3, 2025 | 20254-217229-01 | PUC | COMPLIANCE LETTER |
| March 25, 2025 | 20253-216772-01 | DOC EERA | Comments on pre-construction compliance filings for eastern segment |
| March 14, 2025 | 20253-216417-01 | Xcel Energy | As-Built Drawings Update_Western Segment |
| March 10, 2025 | 20253-216250-01 | Overland - Legalectric - NoCapX 2020 | Xcel 2024 Peak Demand Down 409 MW |
| November 26, 2024 | 202411-212460-01 | Xcel Energy | State Historic Preservation Office Concurrence - Eastern Segment |
| November 26, 2024 | 202411-212463-02 | Xcel Energy | Eastern Segment Plan and Profile Documents - Part 1 of 2 |
| November 26, 2024 | 202411-212463-03 | Xcel Energy | Eastern Segment Plan and Profile Documents - Part 2 of 2 |
| November 26, 2024 | 202411-212463-01 | Xcel Energy | Eastern Segment Plan and Profile Documents - Cover Letter, Certificate, Service Lists |
| October 25, 2024 | 202410-211333-01 | NORTHERN STATES POWER | OCTOBER 2024 PROGRESS REPORT |
| September 25, 2024 | 20249-210471-01 | NORTHERN STATES POWER |