Compare Texas Electricity Providers

Rates as of November 3, 2026 · Updated every month from the plans listed on PowerChoiceTexas.org

Side-by-side comparisons of Reliant, TXU and Constellation. Each one shows the estimated monthly bill from each provider's cheapest plan at 500, 1,000 and 2,000 kWh in Houston, Dallas-Fort Worth and Corpus Christi, the catch in bill-credit plans, and which provider fits your home.

Table of Contents

Provider comparisons

Reliant vs TXU

Reliant is cheaper at 2,000 kWh, and TXU is cheaper at 500 kWh. At 1,000 kWh, it's nearly a tie.

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Reliant vs Constellation

Reliant is cheaper at 2,000 kWh, and Constellation is cheaper at 500 kWh and 1,000 kWh.

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TXU vs Constellation

Constellation is cheaper at 1,000 kWh and 2,000 kWh. At 500 kWh, TXU is cheaper in Houston and Dallas-Fort Worth, and it's nearly a tie in Corpus Christi.

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Who's cheaper at each usage level

The cheaper provider in each pair, from each one's cheapest plan any home can sign up for, across Houston, Dallas-Fort Worth and Corpus Christi:

Comparison500 kWh1,000 kWh2,000 kWh
Reliant vs TXUTXUbill-credit planNearly a tieReliantbill-credit plan
Reliant vs ConstellationConstellationConstellationbill-credit planReliantbill-credit plan
TXU vs ConstellationDepends on the marketConstellationbill-credit planConstellationbill-credit plan

"Nearly a tie" means within $5 a month in every market. "Depends on the market" means the cheaper provider isn't the same in all three; the comparison page shows each one. A bill-credit plan is only that cheap in months when your usage lands in its credit window.

Providers we compare

  • Reliant: 4 plans listed in Houston
  • TXU: 7 plans listed in Houston
  • Constellation: 10 plans listed in Houston
  • Gexa: no plans are listed on PowerChoiceTexas.org right now, so its comparisons are paused until they're back.

How we compare

Rates come from each plan's page on PowerChoiceTexas.org on November 3, 2026. For each provider and usage level we pick its cheapest plan that any home can sign up for (plans for EVs, students and A/C bundles are left out), and estimate the bill as that plan's average price per kWh times usage. Prices include the utility's delivery charges. Rates change often: enter your ZIP code for the prices at your address. PowerChoiceTexas.org is not affiliated with any provider compared here.