Constellation and TXU logos

Compare Constellation vs. TXU Energy

Constellation was founded over two decades ago and offers fixed-rate energy plans in Texas’ deregulated energy market. TXU Energy, another leading energy provider, has Texas roots that date back nearly 150 years. Today, it’s one of Texas’s largest retail electricity providers (REPs).

Both are reputable companies providing a variety of plans, but which one is best for your household? Let’s look at the details for each company to help you make your choice.

Constellation vs. TXU Energy Savings Scores

Category Constellation TXU Energy
Plan Options 5 5
Uniqueness of Audience 4 4
Customer Service 4 5
Accessibility 4 5
Extra Features 5 5
Total Energy Savings Score 4.4/5 4.8/5

Constellation excels at:

  • Automatic energy rewards you can use to save in 500,000+ ways
  • Helps you switch by providing a $150 gift card to cover early termination fees (ETFs)
  • 90-day Guarantee Period lets you terminate your contract without ETFs

TXU Energy excels at:

  • Offers 24/7 customer support
  • $200 move-in bonus on select plans
  • Same-day service when signing up before 6:30 p.m.

Constellation vs. TXU Energy Electricity Plans & Rates

Constellation’s and TXU’s energy rates vary by plan, term length, and your location. See the charts below from Power to Choose for an idea of plan costs.

Constellation Electricity Plans & Rates

Rates are in cents/kWh for 1000kWh usage. The prices may vary depending on the utility. Data is obtained from powertochoose.org (Power to Choose.) The data above is reflecting only English plans. Disclaimer: Some plans shown on the table above may not be available through our site.

TXU Energy Electricity Plans & Rates

Rates are in cents/kWh for 1000kWh usage. The prices may vary depending on the utility. Data is obtained from powertochoose.org (Power to Choose.) The data above is reflecting only English plans. Disclaimer: Some plans shown on the table above may not be available through our site.

Additional Details about Constellation vs. TXU Energy

Below is a side-by-side table of plans available from Constellation Energy and TXU Energy

Category Constellation Energy
TXU Energy
Plan Types Fixed rate, renewable energy Fixed rate, renewable energy, time of use, seasonal
Term Lengths Available 12, 24, 36 12, 24, 36
Renewable Energy Options Yes Yes
Refer-A-Friend Rewards Yes Yes
Switch Plan Fees Not within the first 90 days Not within the first 60 days
Fixed Rate Plan Early Termination Fees $150 $150-$295
*Last updated on Updated on August 31, 2026 based on plans showing on the respective energy provider’s website and powertochoose.org.

How to Choose the Right Texas Energy Company for You

Your usage patterns, budget, and desired contract lengths are the primary comparison points when researching energy plans. However, other factors can sway your decision, including:

  • Early termination fees
  • Plan rewards, perks, and bonuses
  • Renewable energy options
  • Digital user experience
  • Plan variety and availability

Choose Constellation Energy if…

Choose Constellation if you want an extended period to try out your new energy service or want rewards you can use in various ways.

Choose TXU Energy if…

Choose TXU Energy if you want seasonal savings plans or time-of-use energy plans from a Texas company.

Constellation vs. TXU Energy Frequently Asked Questions

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Do Constellation Energy and TXU Energy offer green energy options?
Yes, both Constellation and TXU offer green energy solutions with renewable energy credits. TXU also offers solar buyback programs.
Is Constellation publicly traded?
Yes, Constellation’s NASDAQ ticker symbol is CEG.
Is Constellation in Texas?
Yes, Constellation is in Texas and offers energy plans in Texas’s deregulated energy areas.
Who owns TXU Energy?
TXU Energy is owned by Vistra (NYSE: VST), a Fortune 500 retail electricity and power generation company based in Irving, Texas.