Gexa Energy is proud to be a wholly-owned subsidiary of NextEra Energy Resources, and is one of the largest wholesale generators of electric power in the U.S. The company offers energy solutions to address domestic as well as commercial needs of consumers. Gexa Energy offers expedited assistance to address consumer grievances. In order to get in touch with Gexa Energy customer service representatives, kindly refer to given customer service contact information. Gexa Energy Customer Service Number: (713) 961-9399 Gexa Energy Toll-Free Customer Service Number: (866) 961-9399 Business Hours: Monday-Friday: 7:00 am - 8:00 pm; Saturday: 8:00 am - 2:00 pm | Holiday Hours: Monday-Friday: 9:00 am - 5:00 pm | Saturday: 8:00 am - 2:00 pm | Closed: New Year’s Day, July 4th, Thanksgiving Day, Christmas Day Gexa Energy Customer Service Email: customercare@gexaenergy.com Gexa Energy Corporate Contact Information - Telephone: (713) 470-0400 | Toll-Free: (866) 961-9399 | Fax: (866) 648-4392 ; Toll-Fr