Searching for the best electric companies in Texas? Here are our choices for best electricity provider in Texas, by category.
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Who is the Biggest Electricity Provider in Texas?
The biggest electricity provider in Texas is Reliant Energy, with 1.5 million residential customers, followed by TXU Energy with 1.4 million residential customers.
Five parent corporations (NRG Energy, Vistra Corp., Just Energy Group, NextEra Energy Inc. and Constellation Energy Corporation) control 90% of the Texas residential electricity customer base.
All retail electricity providers (REP) in Texas must file their customer counts by type of customer with the Energy Information Administration. We’ve extracted and analyzed data from the EIA 2025 Annual Electric Power Industry Report released October 7, 2026.
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