StarTex Power™ Rates, Plans, Code | 866-917-8271

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Startex Energy Promo Code: see if our list of exclusive electric company promo codes features a Startex Energy promo code this month (also known as a referral code or discount code), which allows you to receive a discounted rate.

Go to our Constellation Energy page for full details on Constellation/StarTex electricity rates, plans, reviews, and other important information. Below you’ll find some key information on StarTex, which has transitioned to Constellation.

About StarTex Power (now Constellation Energy)

The StarTex brand of electricity was transitioned to the name of its parent brand, Constellation Energy, in 2018. Constellation Energy is a major electric company in commercial energy, but is not a well known brand in residential energy in Texas.

Constellation Energy is not known for having the best electricity rates in Texas, nor does it bill itself as an electric company offering the cheapest electricity plans. That said, Constellation is a credible light company with energy rates that are generally competitive with the rates of large Texas electric companies.

To conveniently compare Constellation Energy electricity rates on their site to those of trusted, established residential brands in Texas, enter your zip code on this page.

Go to our Constellation Energy page for full details on Constellation/StarTex.


Compare Texas electricity rates vetted to prevent billing surprises

Compare Startex Power (Constellation) Rates to Competitors

{total} Gexa Energy Vetted Guaranteed Plans

Plan NamePlan LengthRate
  • These rates are for Oncor service areas.
  • Pricing shown is based on an exact usage of 1000 kWh.

Speak with Gexa for cheap rates with a 60-Day “Happiness Guarantee” at 855-639-8212 (mention code “GexaTX” for discount).

Call Gexa (855-639-8212)

{total} Frontier Energy Plans & Rates

Plan NamePlan LengthRate
  • These rates are for Oncor service areas.
  • Pricing shown is based on an exact usage of 1000 kWh.

Speak with a Frontier Utilities operator directly for easy enrollment by phone at 855-782-8379.

Call Frontier (855-782-8379)

{total} Reliant Energy Trusted Plans & Rates

Plan NamePlan LengthRate
  • These rates are for Oncor service areas.
  • Pricing shown is based on an exact usage of 1000 kWh.

Speak with a Reliant Energy operator for help in choosing a plan that fits your home at 833-339-0416.

Call Reliant (833-339-0416)

{total} Payless Power No Deposit

Plan NamePlan LengthRate
  • These rates are for Oncor service areas.
  • Pricing shown is based on an exact usage of 1000 kWh.

Speak with Payless Power about their competitive “No Deposit” prepaid electricity plans at 833-926-9776.

Call Payless (833-926-9776)

*Samples above are live rates based on Oncor zone at 500, 1000 and 2000 kWh usage. Enter your zip code for rates in your area and additional companies and plans.


Startex Power Business Information

Startex Power’s (now Constellation Energy) headquarters in Texas are located at 1221 Lamar St #750, Houston, TX 77010, United States. The Startex/Constellation phone number is 866-917-8271.

StarTex Power/Constellation Reviews & Ratings

Because the electricity provider brand StarTex assumed the name of its parent, Constellation Energy, it is more relevant to review Constellation reviews than old StarTex Power reviews. See Constellation reviews from Google and the BBB in our live reviews stream below. StarTex reviews began transitioning to Constellation reviews in 2018.

Home Energy Club combines third party information and our HEC/Amazon survey results to assign our HEC Score for each energy provider.

HEC StarTex Power Rating Score: 4.2/5

StarTex Power/Constellation Customer Ratings

StarTex Power has fair to good rating scores for the reviewed categories. Four of the categories score above 4.0, and the highest score is Pricing with a score of 4.5.

StarTex Power/Constellation Customer Reviews

Check our Texas electric company Reviews page to compare Constellation reviews (StarTex reviews) to those of other energy providers.

Check our promotional codes page for the availability of a StarTex Power promo code or Constellation Energy promo code. You will also see a list of exclusive electricity promo codes for other top energy providers which provide a discount off the regular rates on their websites.

Compare Texas electricity rates vetted to prevent billing surprises

StarTex Power Bill Pay

Go to the StarTex Bill Pay page, which is now the Constellation page. The phone number to pay your StarTex bill is 866-917-8271.

Report a StarTex Power Outage

StarTex Power outages should be reported either to Constellation Energy or to the Transmission and Delivery Utility (TDU or TDSP) in your part of Texas. For phone numbers, here’s our Texas power outage phone directory.

There are six deregulated electricity zones for transmission utilities (TDSPs or TDUs) in Texas that are serviced by Startex (as Constellation Energy). These TDSPs include Oncor (in the Dallas Area), Centerpoint Energy (in the Houston area), AEP Texas North, AEP Texas Central, Texas-New Mexico Power and Sharyland.

Top Texas Electric Company Toll Free Numbers

Champion Energy:844-856-9388
Cirro Energy:833-392-9778
Discount Power:833-556-6491
Gexa Energy:855-639-8212
Green Mountain Energy:833-339-0421
Just Energy:833-871-5317
Lone Star Energy:888-853-2882
Pulse Power:833-785-7797
Reliant Energy:833-339-0416
TriEagle Energy:888-380-4813

For more toll-free phone numbers, visit our provider phone directory.

Top StarTex Power Texas Cities Serviced

Moving to a city or town in Texas? Our Texas Cities Electricity page has lots of helpful information for many places, including lists of electric companies, energy rates and plans, electric vehicle charging stations and more. For the biggest cities in the Lone Star State, see the pages for Texas electric companies in Houston and electric companies in Dallas. The cities below are deregulated, so you’ll have a choice of energy providers and plans.

AthensAzleBalch Springs
Bay CityBaytownBedford
BenbrookBig SpringBrownwood
CarrolltonCedar HillCedar Park
Copperas CoveCorpus ChristiCorsicana
DallasDeer ParkDel Rio
Eagle PassEdinburgEl Campo
EnnisEulessFarmers Branch
Forest HillForneyFort Worth
GatesvilleGranburyGrand Prairie
GrapevineHaltom CityHarker Heights
KingsvilleLa MarqueLa Porte
Lake JacksonLancasterLaredo
League CityLewisvilleLongview
Mineral WellsMissionNew Braunfels
NacogdochesNorth Richland HillsOdessa
PharrPlanoPort Lavaca
PortlandRed OakRichardson
RichmondRio Grande CityRockwall
RomaRosenbergRound Rock
RowlettRoyse CitySaginaw
San AngeloSan BenitoSan Juan
ShermanSnyderSouth Houston
Sugar LandSulphur SpringsTaylor
TempleTerrellTexas City
The ColonyTomballTyler

Top Startex Energy Zip Codes Serviced

Enter your zip code to compare StarTex rates in your area

StarTex Power Frequently Asked Questions

Where to compare StarTex Energy plans, rates, and reviews?

Compare StarTex Energy electricity plans, rates and verified customer reviews at We vet each energy plan to protect you from gimmicks that cause bill surprises, and use our bargaining power with electricity providers in Texas to offer you special low discount rates. To rate energy companies, we use objective sources of information like the Better Business Bureau, Public Utility Commission of Texas and Google Reviews, and results from our customer surveys with Amazon. 

Where to find StarTex Power promo code to get discount rate?

Go to the StarTex Power profile page on to see if they offer promo codes which deliver instant discounts off your rate. If they do not provide promo codes, you’ll find promotional codes from many other established electric companies in Texas on the site.

Is StarTex Power a good company?

To determine if StarTex (now Constellation Energy) is a good company, check independent reviews, ratings and complaints statistics about Constellation and over 40 other electric companies at

If you perform a web search for Google reviews of the company, you’ll find that Constellation has a 2-star rating out of 5 stars. On Yelp, Constellation has a 1-star rating. While Constellation is accredited with the Better Business Bureau, its BBB Customer Reviews & Complaints rating is only one star.

How to pay my StarTex Power bill?

Texas residents can use one of the StarTex Power bill pay options below (StarTex is now Constellation Energy):

  • Online StarTex bill payment using your credit or debit card by going to the Constellation/StarTex Power login
  • One-time Constellation/StarTex payment using your account management options
  • Mail payment by sending your checks to Constellation Energy, P.O. Box 5471, Carol Stream, IL 60197-5471
  • Phone payment by utilizing the automated system by calling at 833-221-6654

You’ll find in-depth information on Constellation/StarTex at their profile page on (go to the page link in footer).

Did StarTex Power change its name to Constellation Energy?

Constellation Energy acquired StarTex Power, and the retail electric company now provides service under the Constellation brand in Texas.

Will StarTex Power check my credit?

Constellation/StarTex Power will check your credit by making a soft inquiry about your creditworthiness. Based on this inquiry, you may be asked to pay an initial security deposit. For no-deposit electricity options, visit

How to cancel service with StarTex Power?

You can call Constellation/StarTex Power at 866-917-8271 to schedule cancelation of service. Depending on your plan type, you may have to pay an early termination fee penalty. Check the Electricity Facts Label for your plan on Home Energy Club Discount Rates to determine whether you will be subject to a fee.

Where to compare StarTex Power rates to Pulse Power rates?

{total} Pulse Power Rates & Plans

Plan NamePlan LengthRate
  • These rates are for Oncor service areas.
  • Pricing shown is based on an exact usage of 1000 kWh.



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You should always read a plan’s EFL details to decide if it’s a fit for you, but our system does the tedious math to help you compare estimated costs. Of course, your future bill amounts will depend on your future usage.

You will find a widget on Home Energy Club which fetches your home’s energy usage data from Smart Meter Texas (SMT) and runs calculations of the rate structures of energy plans to help you conveniently estimate the cost of energy plans you are considering, based on your prior 12 months of energy usage as reported by SMT.

In one of the text panels of the widget, you will see an authorization button. By checking the permission box above the fields in which you enter your name and email address, and clicking on the authorization button, you are authorizing Smart Meter Texas to provide us with your location’s energy usage information so that our system can run cost calculations. It’s important to note that errors can occur when developing and running calculations, and the Company does not guarantee that its cost numbers are correct. You should always read the Electricity Facts Label (EFL) for each energy plan you are considering before enrolling, and make an independent decision on whether the plan is an appropriate fit for your home based on your own calculations and all the information disclosed by energy providers in the EFL.

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