Green Mountain Energy Electricity Plans and Rates in Texas

Green Mountain Energy Overview

Green Mountain Energy is the longest-serving renewable energy retailer in the United States. Founded in Vermont in 1997 by Sam Wyly as an offshoot of Green Mountain Power, the company relocated its headquarters to Austin, Texas in September 2000 to prepare for the Texas market deregulation. When retail choice launched in January 2002, Green Mountain became the first company to offer alternative energy in Texas. Today, the company operates under PUCT REP Certificate Number 10009 and holds a Power to Choose rating of 2 of 5, serving customers across 6 of Texas's deregulated TDU territories: CenterPoint, Oncor, AEP Texas Central, AEP Texas North, TNMP, and Lubbock Power & Light.

Green Mountain's identity has been consistent throughout its 28-year history: 100% clean energy backed by renewable energy certificates (RECs), delivered with a mission-driven brand voice captured in the tagline "Choose wisely. It's a small planet." In November 2010, Green Mountain was acquired by NRG Energy for $350 million and now operates as one of NRG's brands, alongside sister brands including Reliant Energy, Direct Energy, and Cirro Energy. Despite the corporate ownership, Green Mountain has maintained its distinctive renewable-focused brand identity as a carbon-neutral company.

The Green Mountain catalog spans 25 plans across contract terms from month-to-month to 36 months. All plans include 100% renewable energy content by default. The lowest current rate is 15.3¢ per kWh at 1,000 kWh usage, and the catalog-wide average is 17.2¢. Beyond standard residential and commercial plans, Green Mountain offers a Renewable Rewards Buy Back program for customers with home solar generation, Solar All Nighter for EV owners, and Ready Set Green conservation programs.

The Green Mountain Energy Sun Club is a sustainable charitable program launched in 2002. Sun Club empowers local communities with sustainability solutions through nonprofit partnerships and sustainability grants, funding projects promoting renewable energy, energy efficiency, resource conservation, and environmental stewardship. Beyond Texas, Green Mountain serves customers in Pennsylvania, New York, New Jersey, Massachusetts, and Illinois.

Green Mountain Energy is not available to businesses or residents in Austin (served by Austin Energy) or San Antonio (served by CPS Energy), since both cities operate under municipal utilities that fall outside the deregulated retail market. Coverage also does not extend to Nueces Electric Cooperative.

Green Mountain Energy Electricity Plans

Green Mountain Energy currently offers 25 electricity plans across 6 Texas TDU territories, with contract terms ranging from month-to-month to 36 months. All Green Mountain plans include 100% renewable energy content by default. The lowest current rate is 15.3¢ per kWh at 1,000 kWh usage, and the catalog-wide average is 17.2¢. Rates update with market conditions and were last refreshed on September 15, 2026, so pricing below is indicative and should be confirmed on the Electricity Facts Label (EFL) at the time of enrollment.

The Green Mountain catalog is organized around 100% clean energy plans across multiple structures.

Fixed-Rate Renewable Plans are the core offering, available in 12, 24, and 36-month terms. All fixed-rate plans include 100% renewable content backed by RECs, so customers do not need to select a specific "green" plan to get renewable energy. Green Mountain built its entire product line around clean energy from the beginning, so sustainability is the default rather than a premium tier.

Solar All Nighter for EVs is a specialized plan for EV owners that provides overnight electricity backed by solar generation during the day. This time-shift lets customers charge their vehicles overnight with electricity that offsets daytime solar production, aligning EV usage with renewable generation patterns.

Renewable Rewards Buy Back Program was launched in May 2009 and credits customers with home solar generation for excess energy their systems send back to the grid. This is one of the longer-running solar buyback programs in the Texas market.

Ready Set Green is a conservation-focused program that helps customers reduce their overall electricity consumption alongside their renewable energy plan, addressing sustainability through both cleaner supply and lower demand.

For business customers, Green Mountain offers Business Electricity plans structured for the small business market plus custom commercial contracts for larger accounts. Commercial pricing is quoted based on load profile and business location, with the 100% renewable energy content maintained across the commercial catalog.

Below, Green Mountain Energy's plans are organized by TDU zone.

Green Mountain Energy is not listed as serving Nueces Electric Cooperative.

About Green Mountain Energy

Green Mountain Energy was founded in Vermont in 1997 by Sam Wyly as an offshoot of Green Mountain Power. The founding mission was straightforward: use retail electricity choice to expand access to clean energy. In September 2000, the company relocated its headquarters to Austin, Texas, positioning itself for the impending Texas market deregulation. When retail choice launched in Texas in January 2002, Green Mountain became the first company to offer alternative energy in the state, establishing a market-first position that has continued for more than 25 years.

The company's product philosophy has been unwavering from day one: 100% renewable energy backed by renewable energy certificates (RECs), delivered to homes and businesses that want cleaner electricity without giving up plan structure options. This all-renewable positioning is genuinely different from most Texas REPs where renewable content is a premium tier layered on top of standard plans. For Green Mountain, sustainability is the default.

Growth has continued through acquisitions and market expansions. In August 2009, Green Mountain expanded to New York City serving Con Edison territory customers. In May 2009, the company launched its Renewable Rewards Buy-Back program, one of the earliest solar buyback programs in Texas. In November 2010, NRG Energy acquired Green Mountain for $350 million. In April 2011, Green Mountain launched a residential solar leasing program alongside a "Pollution Free EV" wind electricity product for electric vehicle owners.

Operating as one of NRG Energy's brands since 2010, Green Mountain sits alongside sister brands Reliant Energy, Direct Energy, and Cirro Energy within the broader NRG portfolio. Despite the corporate parent-company relationship, Green Mountain has maintained its distinctive brand identity and mission-driven positioning as a carbon-neutral company focused on renewable energy.

The Green Mountain Energy Sun Club, launched in 2002, is a sustainable charitable program that supports local communities with sustainability solutions. Sun Club funds projects promoting renewable energy, energy efficiency, resource conservation, and environmental stewardship through nonprofit partnerships and sustainability grants. Customer-funded grants have supported hundreds of community sustainability projects since program launch.

Customer service is available bilingually in English and Spanish through the main support line, and the Green Mountain mobile app provides account management, bill payment, and usage monitoring. The company also operates a Green Team Refer-a-Friend program that provides bonuses for both referrer and new customer.

Contact Green Mountain Energy

Phone

844-854-2260

Website

greenmountainenergy.com

Support email

txsupport@greenmountain.com

Fax

800-315-5408

PUCT REP certificate

10009

Power to Choose rating

File a complaint

puc.texas.gov

Cancellation Fees and Non-Recurring Charges

Cancellation fees on Green Mountain Energy's fixed-rate plans scale with contract length, running from $150 to $395. Longer contract terms carry higher cancellation fees, reflecting the longer commitment period.

Beyond early termination, Green Mountain's terms of service also cover non-recurring charges that apply in specific situations: late payment charges, returned payment or insufficient funds fees, disconnection notice fees, disconnection-plus-reconnection fees, and any non-AutoPay billing fees. These are not published on Power to Choose and are only disclosed in the provider's terms of service and EFL documents.

For customers considering the Renewable Rewards Buy Back program, review the specific credit rates for excess solar generation and the metering requirements. Solar buyback programs vary in structure, and understanding the specific credit calculation helps set realistic expectations for the value of the buyback.

Green Mountain Energy Pros and Cons

Pros:

• Longest-serving renewable energy retailer in the US: Founded 1997, first to offer alternative energy in Texas when deregulation launched in 2002.
• 100% renewable energy on all plans by default: Every Green Mountain plan includes 100% renewable content, unusual in the Texas market where most REPs offer 100% renewable only on dedicated green plans.
• Backed by NRG Energy: One of the largest US power generation and retail electricity companies provides operational stability.
• Sun Club charitable program since 2002: Long-running sustainability charitable initiative supports community renewable energy projects.
• Renewable Rewards Buy Back program: One of the longer-running solar buyback programs in Texas, launched May 2009.
• Solar All Nighter for EVs: Specialized EV plan that pairs overnight charging with daytime solar generation.
• Carbon-neutral company operations: The company itself operates as carbon-neutral, aligning corporate operations with the customer-facing renewable positioning.
• Bilingual customer service: English and Spanish support available.
• Green Mountain mobile app: Account management, bill payment, and usage monitoring through dedicated app.
• Multi-state operations: Serves TX, PA, NY, NJ, MA, IL beyond Texas.

Cons:

• Rates run above pure lowest-rate providers: Green Mountain's renewable positioning and REC purchases contribute to rates that typically run above the lowest-rate providers in the Texas market. Customers focused purely on rate over sustainability may find cheaper options elsewhere.
• Cancellation fees on longer terms: The 36-month ETF at the high end of the $150 to $395 range runs comparable to what other Texas REPs charge for equivalent terms.
• REC-based renewable content: Green Mountain's 100% renewable content is backed by renewable energy certificates rather than direct-line generation, which some customers weigh differently than direct renewable sourcing.
• Corporate parent-company complexity: As one of multiple NRG brands, Green Mountain shares infrastructure with sister brands (Reliant, Direct, Cirro) which some customers see as diminishing its independent identity.
• Rate competitiveness varies by market: Advertised rates in some TDU zones run competitive with market averages, while in others they run at the higher end.

Green Mountain Energy Reviews

Independent customer reviews for Green Mountain Energy are generally favorable, reflecting the company's long track record and the appeal of the 100% renewable positioning for sustainability-focused customers. Customer feedback frequently emphasizes the mission-driven brand voice, the transparency of the renewable content, and the practical value of the Sun Club charitable program. Some negative feedback centers on customers who found rates higher than competing REPs, particularly those without a specific sustainability preference driving their provider choice. For general customer sentiment, the provider's Google reviews and the official Public Utility Commission of Texas complaint scorecard at puct.texas.gov are the most reliable public references.

Green Mountain Energy for Residential and Commercial Customers

Green Mountain Energy sells electricity to both residential and commercial accounts across its TDU service areas, with the 100% renewable energy content maintained across the entire catalog.

For Residential Customers:- If you are a Texas homeowner or renter researching Green Mountain Energy for your home, sign-up runs through the Green Mountain website, through Power to Choose, or through third-party enrollment marketplaces. Every published plan carries an Electricity Facts Label showing the exact rate, delivery charges, term length, and cancellation fee for your specific TDU zone.

Choosing among Green Mountain's plans is relatively straightforward since all plans include 100% renewable content by default. Choose the contract term that matches your commitment preferences. EV owners should consider Solar All Nighter, and homeowners with rooftop solar should look at the Renewable Rewards Buy Back program. Sun Club participation and support for community sustainability projects come with any Green Mountain plan.

Electric Decisions does not enroll residential accounts. Residential customers can shop Green Mountain Energy directly through the sources above.

For Commercial Customers:- For Texas businesses, Green Mountain offers dedicated commercial contracts alongside the residential catalog, with 100% renewable energy content maintained across all commercial offerings. This all-renewable positioning fits businesses with sustainability commitments, sustainability reporting obligations, or specific corporate renewable energy targets. Commercial pricing is not published on Power to Choose and is quoted based on load profile, contract term, TDU zone, and where the ERCOT forward curve is trading at the moment of contract lock. Commercial contracts also carry negotiable terms that materially affect total cost: bandwidth (swing tolerance), early termination fee methodology, add and delete meter language, holdover rate, and pass-through TDSP delivery treatment.

Electric Decisions runs an apples-to-apples RFP process for Green Mountain Energy alongside every other qualified Texas REP. Bids come in against identical specifications, are benchmarked against the live ERCOT forward curve, and every contract is red-lined in plain English before you sign.

Explore our full Texas retail electric provider, the energy procurement process we use to run bid competitions, and the commercial electricity in Texas overview for ERCOT market basics and how commercial contracts differ from residential ones.