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US retail energy supplier

TXU Energy US

Headquartered in Irving, Texas and owned by Vistra Corp (NYSE: VST), TXU Energy is the largest retail electric provider in Texas, serving more than 1.7 million households and businesses across every deregulated TDU territory in the state. TXU is the legacy retail successor of Texas Utilities (TXU Corp), the integrated utility that served Texas from 1882 until its 2007 leveraged buyout.

See TXU plans Call 1-800-242-9113
Founded 2002 1.7+ million Texas households and businesses Irving, TX 1 state served

Founded

2002

Years in the US market

Customers

1.7+ million Texas households and businesses

Households served

About

Who is TXU Energy?

Registered as TXU Energy Retail Company, LLC, TXU Energy uses this legal name for state public-utility-commission filings and customer contracts. The trading name on bills is the shorter, more recognisable form.

The company is headquartered in Irving, TX, where it runs senior management, customer operations and regulatory liaison with state commissions.

TXU Energy was established in 2002. A longer track record means more years operating under state-commission rules and a wider history of customer feedback, billing and regulatory interactions.

TXU Energy is part of the Vistra Corp group, which provides shared governance, financial backing and a broader pool of expertise in wholesale-market trading, hedging and regulatory work.

Service area

Where TXU Energy operates

Electricity

1 state

  • TX

Service availability varies by zip code within each state. Eligibility depends on your local utility's deregulation status — check on TXU Energy's website with your zip code before enrolling.

Plan structure

What plan types does TXU Energy offer?

Simple Rate / Simple Saver

Flagship 12 or 24-month fixed-rate plans — the standard TXU pick for predictable monthly bills.

Free Nights & Solar Days

Time-of-use plans where overnight electricity (8 p.m. - 5 a.m.) or daytime solar-hour electricity is free. Higher peak rate compensates.

Season Pass

Mild-season-discount plan: customers get bill credits during shoulder months in exchange for a higher summer rate.

Green / Renewable

Matched with Green-e certified RECs; available in 12 and 24-month terms.

Smart-Energy products

Add-on bundles: Nest thermostats, smart-home discounts, EV charging optimisation. Marketed via TXU's rewards programme.

Renewable content: TXU's 100% renewable plans are matched with Green-e certified RECs from US wind and solar farms. Parent Vistra Corp owns one of the largest competitive generation fleets in the US, including ~7 GW of solar + storage announced through 2026.

See current TXU plans & rates

Timeline

TXU Energy — key moments

  1. 1882

    Dallas Electric Lighting Company (a TXU predecessor) is founded — the start of Texas Utilities' lineage.

  2. 2002

    TXU Energy Retail Company is created as the unregulated retail arm when Texas deregulates the electric market. Becomes the default REP for the former TXU service area covering most of North and East Texas.

  3. 2007

    TXU Corp taken private in a $45 billion leveraged buyout by KKR, TPG and Goldman Sachs — the largest LBO in US history at the time. Renamed Energy Future Holdings.

  4. 2014

    Energy Future Holdings files for Chapter 11 bankruptcy after the LBO debt overwhelms the business.

  5. 2016

    Vistra Energy spins out of the EFH bankruptcy as a standalone publicly traded company; TXU Energy becomes Vistra's flagship retail brand.

  6. 2019

    Vistra acquires Ambit Energy, adding ~1 million customers to the retail portfolio while keeping TXU as the lead brand.

Contact

Reach TXU Energy customer service

TXU Energy's customer service handles enrollment questions, billing, switching and complaints. Have your account number from a recent bill ready to speed up the call.

  • Have your TXU account number from a recent bill ready to speed up the call.
  • For service outages or downed wires, call your TDU — not TXU. Outage numbers: Oncor 888-313-4747; CenterPoint 713-207-2222; AEP Texas 866-223-8508; TNMP 888-866-7456.
  • TXU's mobile app and online portal handle most account tasks (bill pay, usage, renewals) without needing a phone call.
  • Spanish-language service available at the same number.

Customer service

1-800-242-9113

Mon-Fri 7 a.m. - 8 p.m., Sat 8 a.m. - 5 p.m. CT

TXU Energy online account

Frequently asked

TXU Energy — answers to common questions

TXU Energy is regulated by the public utility commission in each state where it operates. Reliability is best judged against your own usage profile: read recent reviews, confirm the customer-service hours match when you actually need to call, and compare the unit rate against the utility's price-to-compare for your zip code.

Plans can typically be enrolled directly on TXU Energy's website or by calling 1-800-242-9113. Before signing up, always compare the unit rate (¢/kWh for electricity, $/therm for gas) against your utility's price-to-compare for your zip code.

You can switch your retail supplier at any time, though early termination fees (typically $50-$200) may apply if you are on a fixed-rate plan and within the contract term. Check your enrollment letter or Terms of Service for the exact figure. Switching back to your default utility supply is always free.