US retail energy supplier

Gexa Energy US

Headquartered in Houston, Texas and owned by NRG Energy (NYSE: NRG) since 2009, Gexa is one of the largest value-positioned retail electric providers in Texas, serving more than 400,000 customers across the Oncor, CenterPoint, AEP and TNMP TDU zones with fixed-rate and 100%-renewable plans.

See Gexa plans Call 1-866-961-9399

Founded 2002 ~400,000 Texas customers Houston, TX 1 state served

Founded

2002

Years in the US market

Customers

~400,000 Texas customers

Households served

About

Who is Gexa Energy?

Registered as Gexa Energy, LP, Gexa 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 Houston, TX, where it runs senior management, customer operations and regulatory liaison with state commissions.

Gexa 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.

Gexa Energy is part of the NRG Energy (NYSE: NRG) group, which provides shared governance, financial backing and a broader pool of expertise in wholesale-market trading, hedging and regulatory work.

Service area

Where Gexa Energy operates

Electricity

1 state

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

Plan structure

What plan types does Gexa Energy offer?

Gexa Saver fixed

12 or 24-month fixed-rate plans built around a usage-credit at 1,000 kWh; lowest advertised post-credit rate when usage lands close to the credit band.

Gexa Eco Saver

100% renewable fixed-rate plans matched with Green-e certified RECs at a modest premium over the conventional Saver tier.

Simple Saver

No-bill-credit fixed-rate plans for households whose usage falls outside the Saver credit band; predictable cents-per-kWh.

Renewable content: Gexa Eco Saver plans are matched 1:1 with Green-e certified Renewable Energy Certificates sourced from US wind and solar projects.

See current Gexa plans & rates

Timeline

Gexa Energy — key moments

2002

Gexa Energy launches in Houston as one of the first retail electric providers licensed under Texas Senate Bill 7 deregulation.
2005

Gexa is acquired by FPL Group (now NextEra Energy) and expands its Texas footprint.
2009

NRG Energy acquires Gexa Energy together with Reliant Energy from RRI Energy in a $287 million transaction.
2019

Gexa launches the Eco Saver plan family, repositioning as the NRG group's value+green brand in Texas.
2025

Customer base grows past the 400,000 mark following ERCOT-wide marketing campaigns.

Contact

Reach Gexa Energy customer service

Gexa 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 ESI ID and Gexa account number ready before calling — both are printed on every bill.
For service outages or downed wires, call your TDU rather than Gexa. CenterPoint (Houston): 713-207-2222; Oncor (DFW): 888-313-4747.
Spanish-language customer service is available at the same toll-free number.

Customer service

1-866-961-9399

Monday-Friday 7 a.m. - 8 p.m., Saturday 8 a.m. - 5 p.m. CT

Gexa Energy online account

Frequently asked

Gexa Energy — answers to common questions

Gexa 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 Gexa Energy's website or by calling 1-866-961-9399. 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.