NRG Contact Information

Contact Information for Large Business

Contact us about your large business power concerns.


General questions? Call us at 1-888-315-1558 (Monday - Friday, 7:30 a.m. - 5:30 p.m. CST) or email us at, and we'd be happy to assist you.

Send correspondence to:

P.O. Box 1532
Houston, TX 77251-1532

Send payments to (U.S. Mail):

Reliant - Dept. 0954 
P.O. Box 120954
Dallas, TX 75312-0954

For overnight delivery:

Reliant - Dept. 0954
1501 N Plano Rd.
Richardson, TX 75081

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