US retail energy supplier

Cirro Energy US

A Plano, Texas-based retail-electricity provider serving Texas since 2001, Cirro Energy is a wholly-owned subsidiary of NRG Energy (NYSE: NRG) and a sister brand to Reliant Energy. Serves more than 150,000 customers across the ERCOT competitive market.

See Cirro Energy plans Call 1-800-692-4776

Founded 2001 Over 150,000 Plano, TX 1 state served

Founded

2001

Years in the US market

Customers

Over 150,000

Households served

About

Who is Cirro Energy?

Registered as Cirro Group, Inc., Cirro 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 Plano, TX, where it runs senior management, customer operations and regulatory liaison with state commissions.

Cirro Energy was established in 2001. A longer track record means more years operating under state-commission rules and a wider history of customer feedback, billing and regulatory interactions.

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

Service area

Where Cirro 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 Cirro Energy's website with your zip code before enrolling.

Plan structure

What plan types does Cirro Energy offer?

Fixed-rate

Cirro's flagship 12, 24 or 36-month fixed-rate plans. Transparent unit rate with the "fair prices, simple plans, no surprises" pitch.

Renewable-content plans

Selected Cirro fixed-rate plans include partial or 100% Green-e certified Renewable Energy Certificates (RECs). Renewable content is disclosed on each plan's Electricity Facts Label.

Indexed and seasonal plans

Less common Cirro products tied to wholesale-market or seasonal indices — generally aimed at experienced shoppers comfortable with price variation.

Renewable content: Cirro markets selected plans with up to 100% renewable content, backed by Green-e certified RECs. Confirm the exact percentage on the Electricity Facts Label (EFL) of each plan before signing up.

See current Cirro Energy plans & rates

Timeline

Cirro Energy — key moments

2001

Cirro Energy founded in Plano, Texas as one of the first private REPs licensed under the ERCOT deregulation framework.
2012

Acquired by NRG Energy (NYSE: NRG) as part of the parent's build-out of multi-brand retail-electricity operations in Texas alongside Reliant Energy.
2020

Crossed the 150,000-customer mark in Texas under the "fair prices, simple plans, no surprises" positioning.

Contact

Reach Cirro Energy customer service

Cirro 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.

Cirro residential customer service operates daily 7 a.m. - 10 p.m. CT — broader hours than most Texas REPs.
For an outage or downed wires, always call your local TDU (Oncor, Centerpoint, AEP TCC/TNC, TNMP) — not Cirro.
Online chat with a Customer Care agent is available Mon-Fri 8 a.m. - 6 p.m. CT.

Customer service

1-800-692-4776

Daily 7 a.m. - 10 p.m. CT (residential); Mon-Fri 8:30 a.m. - 5:30 p.m. CT (small business)

Cirro Energy online account

Frequently asked

Cirro Energy — answers to common questions

Cirro 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 Cirro Energy's website or by calling 1-800-692-4776. 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.