Media Center 

Reliability through markets. That’s our primary role as a regional transmission organization. We provide independent services that ensure the robust and reliable transfer of energy along the interconnected transmission system in 15 states and the Canadian province of Manitoba. We are based in Carmel, Ind., with additional operations in St. Paul, Minn.

MISO Corporate Fact Sheet

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Guide to Referencing MISO

Effective April 26, 2013, MISO amended its Certificate of Incorporation on file with the State of Delaware to reflect a change in its legal name to “Midcontinent Independent System Operator, Inc.”  No other changes to the MISO business resulted from this change.

Because of the recent growth of MISO operations, “Midcontinent” better represents our expanding footprint.

Please contact MISO’s media line - 317-432-4507- if you have questions.

  • Pronunciation Guide
    MISO (mEYE-so)
  • Use MISO in all references to our corporate name
Example: MISO facilitates greater competition among power suppliers, allowing all parties to spread their risks and lower their costs. Full name of our organization:
Midcontinent Independent System Operator, Inc. 


Graphics and Logos

E-mail Corporate Communications if you'd like permission to use MISO's logo. Please indicate why you need the logo and the preferred size and format .

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