Customer Service
We’re here if you have any questions about your existing account:
Contact Us Online!
Tel: 866-785-4668
Mon-Fri 7am – 10pm
Sat 9am – 5pm
If your schedule is flexible, please consider calling during these typically low call volume times to minimize your wait:
Wed - 11:30am - 6pm | Thu & Fri - 11:30am - 8pm
During high call volume times, we now offer a Customer Callback feature.
Simply press 1 when prompted and then input your phone number. We’ll hold your place in line and call you back when the next representative is available – so you can go about your day instead of sitting on hold.
Moving and Disconnects
If you’re an existing customer and need to disconnect, transfer or add a new service to your account:
Transfer your existing Green Mountain Energy® Electricity Service Online!
Disconnect Your Service
Power Outages
If you experience a power outage, please contact your local electric delivery company for assistance:
Oncor: 888-313-4747
Centerpoint: 800-332-7143
AEP–Texas Central Company: 866-223-8508
AEP–Texas North Company: 866-223-8508
Texas New Mexico Power: 888-866-7456
New Residential Customers
If you’re ready to help us change the way power is made and have never had an account with us before – join our community now!
Sign Up for new Service Online!
Tel: 866-301-3120
Hours: Mon-Fri - 8am-8pm | Sat - 10am-5pm
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