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Planning Zones

Northwest Zone
Northeast Zone
West Central Zone
Twin Cities Zone
Southwest Zone
Southeast Zone

MN Counties (large map)

Sponsoring Utilities
American Transmission Company
Central Minnesota Power Agency/Services
Dairyland Power Cooperative
East River Electric Power Cooperative
Great River Energy
ITC Midwest
L&O Power Cooperative
Minnesota Power
Minnkota Power Cooperative
Missouri River Energy
Otter Tail Power Company
Rochester Public Utilities Commission
Southern Minnesota
Municipal Power Agency
Xcel Energy
Participating Government Agencies
Minnesota Public Utililities Commission
Minnesota Department of Commerce
Environmental Quality Board
Related Links
North American Electric Reliability Council
Midcontinent ISO
National Electric Safety Code
US Department of Energy

Studies and Reports

2023 Biennial Transmission Projects Report

The 2023 Biennial Transmission Projects Report was filed with the Minnesota Public Utilities Commission on November 1, 2023. Click a link below to go to the full report.

2023 Biennial Transmission Projects Report

Details on rules that govern the Biennial Transmission Projects Report are here: transrul.pdf (PDF, size: 60 K)

Video: Biennial Transmission Planning

Video: How to Read the Biennial Transmission Report

Grid Modernization Report

Northern States Power Company, doing business as Xcel Energy, submitted a Grid Modernization Report on November 1, 2015. Download PDF document.

Minnesota Renewable Energy Integration and Transmission Study (MRITS)

The Minnesota Renewable Energy Integration and Transmission Study (MRITS) is an engineering study of increasing the Minnesota Renewable Energy Standard to 40 percent by 2030 and to higher proportions thereafter, while maintaining system reliability. The report, which was filed November 5, 2014, is linked here:

MRITS Report (PDF, size: 6.2 MB)

Previous Biennial Transmission Projects Reports

2021 Biennial Transmission Projects Report
2019 Biennial Transmission Projects Report
2017 Biennial Transmission Projects Report
2015 Biennial Transmission Projects Report

2013 Biennial Transmission Projects Report
2011 Biennial Transmission Projects Report
2009 Biennial Transmission Projects Report
2007 Biennial Transmission Projects Report
2005 Biennial Transmission Projects Report
2003 Biennial Transmission Projects Report (PDF, size: 6.8 MB)
2001 Minnesota Energy Planning Report (PDF, size: 2.6 MB)

Previous Transmission Studies

Minnesota transmission-owning electric utilities conducted studies to identify electric transmission system requirements needed to meet the Renewable Energy Standards mandated in the Next Generation Energy Act of 2007. The studies are linked here:

Southwest Twin Cities - Granite Falls Transmission Upgrade & MN RES Update Studies (PDF, size: 3.3 MB)
Southwest Twin Cities - Granite Falls Transmission Upgrade Study - Appendices (PDF, size: 50.8 MB)
Minnesota RES Update Study - Appendices (PDF, size: 166.1 MB)

Capacity Validation Study

The Capacity Validation Study was developed by Minnesota transmission-owning utilities to identify impacts to the electric transmission system in the state with the addition of new transmission infrastructure noted in other studies. The study is linked here:

Capacity Validation Study Report (PDF, size: 752 KB)
Capacity Validation Study Report - Appendices (PDF, size: 876 KB)
Upgrade Cost vs. Transfer graphs (PDF, size: 984 KB)


2008 GRE complete long range plan