Constellation Energy

Shop Constellation Energy rates in Texas

With more than 2 million residential and business energy customers, Constellation Energy (previously known as StarTex Power) has established itself as one of the most trusted retail energy providers (REP) in the Texas deregulated market. Choose from a number of fixed- and variable-rate electricity plans, renewable electric plans and more – all in the SaveOnEnergy.com marketplace.

Think Constellation Energy is the supplier for you? Enter your ZIP code above to shop rates.

Sign up for a Constellation Energy plan with SaveOnEnergy.com

As the largest online energy marketplace in Texas, SaveOnEnergy.com will help you find a great energy plan that fits your budget, usage and needs. Not sure which plan is right for you? Call the number above to speak to one of our energy experts.

• Step 1: Enter your ZIP code above to view today’s low energy rates from Constellation Energy.


• Step 2: Select a plan and sign up over the phone or online in just minutes.


• Step 3: Enjoy reliable energy at an affordable price!

A few things to remember

• Don’t forget to read your plan’s Electricity Facts Label before signing up. It contains important information including:
  • Price per kilowatt-hour based on usage
  • % renewable energy sourcing
  • Early termination fees
• Enjoy hassle-free supplier setup. Once your order has been confirmed, your new supplier will set up service with your utility, or transmission and distribution service provider (TDSP) – but don’t worry, there shouldn’t be any interruption to your power during the switch.
• Understanding your electricity bill. Your local TDSP will still deliver your electricity and maintain electric infrastructure including meters and power lines. Your utility fees can be found as TDU or TDSP charges on your monthly bill. They are independent of your supplier rate.

Contact Constellation Energy for customer support

• Call 866-917-8271 or click here for Constellation Energy customer support.


• Click here to log into your Constellation Energy account.

Are you a StarTex Power customer?

Good news! You can now access your account through Constellation Energy – click here to learn more.