MISO Tranche 2 moves forward
August 19th, 2025
Here we go… It’s MISO Tranche 2, which means more transmission, and BIGGER transmission coming to Minnesota, and this is for the “Iron Range to Arrowhead” transmission line, the first Notice Plan and Exemptions Request of the bunch. Here’s the BIG picture:
To look up any of these projects, go to eDockets: https://www.edockets.state.mn.us/documents then plug in the docket number, i.e. 25-111 for this one:
Interactive Map for Iron Range to Arrowhead HERE!
The PUC dockets to plug in (and FYI, the MISO number from above, substations, and voltage) are:
- CN-25-109 MISO 20 – Maple River – Cuyuna 345 kV
- CN-25-111 MISO 21 – Iron Range – Arrowhead 345 kV
- TL-25-112 ” “
- CN-25-116 MISO 19 – Bison-Alexandria 345kv
- CN-25-117 MISO 22 – Brookings – Lakefield 765 kV
- CN-25-118 MISO 23 – Lakefield – East Adair 765 kV
- CN-25-119 MISO 24 – Lakefield-Pleasant Valley – N Roch 765 kV
- CN-25-120 MISO 25 – Pleasant Valley – N Roch – Hampton 345 kV
- CN-25-121 MISO 26 – N Roch – Columbia 765 kV Dairyland
- CN-25-122 ” ” Xcel
The project with the just filed Notice of Comment Notice Plan and Request for Exemptions is MISO #21, and PUC Docket E015/CN-25-111, from the Iron Range sub to Arrowhead sub.
And here’s the Comment Notice:
The “Topics for Comment” that the PUC lists is just one, about the Exemptions Minnesota Power (MP) and American Transmission Company (ATC) have requested:
But… but… but… where’s mention of the Notice Plan? Do check out the Notice Plan and if it’s deficient, let them know in your comment.
Send Comments to:
I highly recommend signing up for eFiling and filing them directly in the docket — that way others can benefit from your filing to help recognize and address issues. INSTRUCTIONS TO REGISTER (yeah, it’s over 20 pages, but there are screen shots to walk you through, and once you’re registered, it’s EASY to file.
p.s. Here’s a post (linked HERE) from over a decade ago predicting this mess of 765 kV transmission:
Thanks, American Clean Power Ass., f/k/a American Wind Energy Ass.
And yes, transmission and markets, or American Clean Power’s “Markets & Transmission,” — it’s all about money:








Leave a Reply