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Contact MISO

No matter your question or request, contacting Client Relations is a good place to start. Client Relations specializes in providing first-line support for MISO members, market participants and other stakeholders.

Client Relations

Monday-Friday, 8 a.m. – 5 p.m. ET 
866-296-6476, option 3
E-mail for a response within one business day

For questions about OASIS, the Market Portal or other MISO-related network activity, contact our IT Operations Center 24 hours a day, seven days a week.

Employment Verification

Visit www.theworknumber.com, select “Get Started Now” and use the following information:

  1. Employer Code is 106806
  2. Employee’s Social Security Number

IT Operations Center
24-hour service
866-296-6476, option 1  

Call 317-249-5650 or E-mail us.

Visitors and Deliveries

Headquarters & Central Region Operations Center 

Visitors and Delivery Hours: Monday - Friday 8 a.m. - 5 p.m. ET

Physical Address:  Delivery Address:
720 City Center Drive
Carmel, IN   46032-3826
  P.O. Box 4202
 Carmel, IN 46082-4202 

Phone: 317-249-5400
Fax: 317-249-5910
Carmel Map

North Region Operations Center
Visitors and Delivery Hours: Monday - Friday 8 a.m. - 5 p.m. CT

2985 Ames Crossing Rd   
Eagan, MN 55121
Phone: 651-632-8400
Fax: 651-632-8417

Eagan map

South Region Operations Center
Visitors and Delivery Hours: Monday - Friday 8 a.m. - 5 p.m. CT

1700 Centerview Drive
Little Rock, AR 72211
Phone: 501-244-1500

Little Rock Map

2020 MISO Observed Holidays 

 MISO offices will be closed on the following dates. 

Holiday Date Observed
New Year's Day  January 1
Martin Luther King Day  January 20
President's Day  February 17
Memorial Day  May 25
Independence Day  July 3
Labor Day  September 7
Thanksgiving Day  November 26
Day after Thanksgiving  November 27
Christmas Eve  December 24
Christmas Day December 25



Suppliers and Vendors

At MISO, we value the diversity of our employees, suppliers and stakeholders for their various ideas, approaches and solutions. Our Supplier Diversity Enterprise Program helps further ensure that we include small, disadvantaged, minority and women-owned businesses in our strategic sourcing and procurement processes. Through our support of diverse suppliers, we hope to contribute to long-term community and economic stability.