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.

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

Media 
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

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

South Region Transmission Planning Office
Visitors and Delivery Hours: Monday - Friday 8 a.m. - 5 p.m. CT

Two Lakeway
3850 N. Causeway Blvd.
Suite 442
Metairie, LA 70002
Phone: 504-846-7100
Fax: 504-846-7120 

Metairie Map

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.