How does Green Mountain Energy score?
Green Mountain earns 70 out of 100. We rate that "good." It gets full marks for its BBB grade and strong marks for price and contract terms. It loses the most points for complaints and a 2016 state penalty.
- October 4, 2026: 68 at launch.
- October 5, 2026: 70. Its terms let customers give to its bill payment help program, which earns 2 points under our published rule.
- December 16, 2026 (scheduled): 82. The 2016 penalty (Docket 46597) leaves our 10-year window, if nothing else changes.
We re-check prices every month and re-score when the state posts new complaint data or a penalty order, or the BBB grade changes.
90–100 Excellent80–89 Very good70–79 Good60–69 FairUnder 60 Poor
Scores out of 100, from public records only, with the same formula for every company, as of October 13 to 16, 2026. See all 25 ranked side by side.
See the evidence behind every point
| Category | Points | Evidence |
|---|---|---|
| Complaints to the state | 15 / 25 | 3 of 5 on the PUCT complaint scorecard (middle group), from Power to Choose provider data, 2026. For context, 83 complaints were logged April 1 to September 30, 2026. |
| BBB rating | 5 / 5 | A+ letter grade on the Texas retail-electricity profile. Only the letter grade counts; accreditation does not affect the score. |
| Fines and penalties | 8 / 20 | One qualifying penalty in 10 years, in the $500,000-or-more band: a $900,000 PUCT penalty in 2016 (Docket 46597) naming Green Mountain with Reliant and two affiliates. A shared penalty with no separate per-company amount counts in full against each named company (−12). No Texas Attorney General action found. |
| Contract fairness | 15 / 20 | $150 cancel fee on the 12-month plan (5 of 5); no arbitration clause and no class-action waiver (4 of 4); a plain fixed plan (4 of 4); two extra fees beyond late and returned payment (2 of 4); only the legal 3-day cancel window, no satisfaction guarantee (0 of 3). |
| Price | 17 / 20 | Pollution Free e-Plus 12 averages 15.1¢ at 1,000 kWh in Houston, 95% of EIA's 15.88¢ Texas average for July 2026. No 12-month fixed plan listed for Dallas (Oncor) on Power to Choose as of October 4, 2026; price scored on Houston only. |
| Time in business | 10 / 10 | Licensed August 2, 2001 (certificate 10009), more than 20 years (6); parent NRG Energy publishes audited financials (+2); its terms say customers can give to its bill payment assistance program each month (+2). |
We score every company with one formula built only on public records. Full method: how we score.
Green Mountain Energy quick facts
How much would Green Mountain cost me each month?
Slide to the kWh on your last bill to see your real monthly cost in Houston. Watch the low end: under about 550 kWh a month, the $5 base charge makes this plan cost more than average. Above that, it costs less.
$5.00 base charge + $75.42 energy from Green Mountain + $70.23 CenterPoint delivery.
That's about $8.15 less than the same usage at the Texas average price of 15.88¢.
Partner toolWe may earn a fee if you sign up. It never changes our scores.
The math uses Green Mountain's September 30, 2026 fact label for Houston: a 7.5419¢ energy rate, a $5 monthly base charge, and CenterPoint's delivery charges. Taxes are extra. Not in Houston? See what Oncor charges and Dallas plan prices, or price any plan with our plan cost calculator. Wondering how your usage stacks up? Compare it with a normal Texas bill.
What does Green Mountain charge in 2026?
Its main fixed plan, Pollution Free e-Plus 12, costs about 15.1¢ per kWh at 1,000 kWh in Houston. Expect about $151 a month with delivery, before taxes, a bit under the 15.88¢ Texas average.
Green Mountain: e-Plus 12 in Houston, fact label dated September 30, 2026. TXU: its simplest 12-month plan in Houston, from our TXU review. Texas average: EIA, July 2026, all utilities.
Average price per kWh from the plan's fact label for ZIP 77002, dated September 30, 2026. Prices include delivery but not taxes. The more you use, the lower the price per kWh gets, because the $5 base charge is spread across more kWh.
- Green Mountain energy charge (7.5419¢ per kWh)$75.42
- CenterPoint delivery, passed through to you$70.23
- Green Mountain base charge$5.00
Before taxes. Delivery is the same on every Houston plan, no matter which company you pick. See what CenterPoint charges.
Is Green Mountain Energy really 100% renewable?
Yes, through certificates. Green Mountain buys renewable energy certificates to match 100% of the power you use each year. Most Texas plans are far lower. The state average is 37%.
From the providers' fact labels. TXU's Texas Choice plan is 25% renewable.
Each certificate stands for one megawatt-hour of power made from a renewable source. Green Mountain buys enough of them to match all the power you use in a year. Its Pollution Free power is at least 51% Texas wind, and the rest is U.S. wind.
The power in your wires is the same grid mix your neighbors get. No company can send only wind power to one house. The certificates are how a plan claims the clean power it paid for.
Want to go further than a green plan? See whether solar panels are worth it in Texas, or what a home battery can do in an outage.
How many complaints does Green Mountain get?
Texans filed 83 complaints about Green Mountain with the state from April through September 2026. After adjusting for size, the state puts it in the middle group: 3 of 5.
The state sorts every provider into five equal groups by complaints per 1,000 customers. TXU is in the top group, 5 of 5.
Green Mountain sits in the middle. It beats the two worst groups but trails the two best. That's the biggest reason its score is "fair" and not "good."
The Better Business Bureau gives Green Mountain's Texas profile an A+, its top grade. Only the letter grade counts in our score. Reviews and accreditation don't.
What fees does Green Mountain charge, and how do I cancel?
Leaving the 12-month plan early costs $150. But you pay nothing if you move and give a forwarding address. Here's every fee in its contract.
- No arbitration clause and no class-action waiver, so you can go to court.
- Moving out? Give a forwarding address and there’s no cancel fee.
- One simple energy rate, with no bill credits or usage tiers.
- Every plan is 100% renewable.
- Only the legal 3-day window to cancel free, and no satisfaction guarantee.
- Bills come by email only. Keep a working email on file, or you may owe fees.
- You may need a deposit, based on your credit.
- $25 disconnect-notice and $25 disconnect-recovery fees.
Changed your mind? If you switched to Green Mountain from another company, you can cancel within three federal business days of getting your terms, with no fee. Behind on a bill? Ask Green Mountain about a payment plan, call 211 for local help, or see help paying your electric bill.
Keep readingGreen Mountain ties for eighth of 25. See who ranks higherHas Green Mountain Energy been fined?
Yes, once in the last 10 years. In 2016, the state approved a $900,000 penalty that named Green Mountain and three other NRG companies. The order didn't split the amount, so our method counts all $900,000 against each company named.
Same owner, but different plans, prices and records. Green Mountain was named with Reliant in the 2016 penalty below.
- Green Mountain Energy is founded as a renewable-electricity retailer.
- Green Mountain gets its Texas license (certificate 10009), months before the state’s retail market opens in 2002.
- The state’s final order in Docket 46597 sets a $900,000 penalty. It names Green Mountain with Reliant Energy Retail Services, Everything Energy and US Retailers, and doesn’t split the amount. Our Reliant review covers the same order.
- The state’s complaint scorecard rates Green Mountain 3 of 5.
How we checked: we searched the state's case files for Green Mountain and the Texas Attorney General's actions. We found no Attorney General lawsuit. We counted Docket 46597 in full under our shared-penalty rule. Anything older than 10 years drops out of the score.
Green Mountain vs. TXU Energy
TXU scores higher overall, 80 to 70. TXU wins on complaints and gives you longer to cancel free. Green Mountain wins on price and renewable power, and its contract has no arbitration clause.
Complaint counts aren't adjusted for company size; the state's rating is. TXU figures come from our TXU Energy review.
Keep readingRead our full TXU Energy reviewWhat is Green Mountain Energy's phone number?
Green Mountain’s line, 1-866-785-4668, is open 7 a.m. to 10 p.m. Central every day. It sells your power but doesn’t own the lines, so outages go to your utility.
Power out? Call the company that owns your lines
Green Mountain is paperless. Bills and contract notices come by email, so keep a working email adress on file. Its fact label says you may owe certain fees if you don't. Learn more in our power outage guide.
Does Green Mountain Energy buy back solar power?
Yes, two plans. Renewable Rewards Solar Credit 12 pays a flat 6.3¢ per kWh in Dallas and 5.7¢ in Houston. Solar Max 12 pays the ERCOT wholesale price, which changes every 15 minutes.
Based on Green Mountain’s terms of service and its September 30, 2026 (Houston) and October 4, 2026 (Dallas) fact labels. Credit rates move, so re-check the label the day you sign.
Energy charge only, from Green Mountain’s fact labels. Note the flat-rate plan’s $29.95 base charge, $15 more than Solar Max.
We multiply your extra kWh by each plan’s credit. Wholesale amounts are estimates from Champion’s published averages for July to September 2026, since the ERCOT price changes every 15 minutes.
Partner toolWe may earn a fee if you sign up. It never changes our scores.
- No cap. Your balance carries over if you switch Green Mountain plans.
- Leftover credit is refunded within 90 days after your service ends.
- Your system must be 50 kW or smaller, with an interconnection agreement and a meter that tracks power both ways.
- Credits can take up to three billing cycles to start after you get permission to operate.
Green Mountain Energy questions, answered
Is Green Mountain Energy a good electricity provider?
It's good. Green Mountain scores 70 out of 100 on our public-records scorecard. It gets full marks at the BBB and strong marks for price and contract terms, and it sells 100% renewable power. Points come off for a middling 3 of 5 complaint rating and a $900,000 state penalty from 2016, which drops out of our window on December 16, 2026.
Is Green Mountain Energy really 100% renewable?
Yes, through certificates. Green Mountain buys renewable energy certificates to match 100% of the power you use each year. Its Pollution Free power is at least 51% Texas wind, with the rest from U.S. wind. The power in your wires is still the same grid mix your neighbors get. The Texas average is 37% renewable.
Who owns Green Mountain Energy?
NRG Energy, a big public power company, owns Green Mountain. NRG also owns Reliant, Direct Energy and Cirro in Texas. Green Mountain started in 1997 and got its Texas license in 2001.
How much does Green Mountain charge to cancel?
$150 on its 12-month plan. Green Mountain waives the fee if you move and give a forwarding address. If you switched from another company, you can also cancel within three federal business days of getting your terms, with no fee. Near the end of your contract? See what to do before it ends.
How much does Green Mountain's plan cost?
In Houston, Pollution Free e-Plus 12 runs about 15.1¢ per kWh at 1,000 kWh. That's about $151 a month with delivery, before taxes, and below the 15.88¢ Texas average. You pay one energy rate of 7.5419¢ plus a $5 monthly base charge. There are no bill credits or usage tiers.
How many complaints does Green Mountain get?
Texans filed 83 complaints about Green Mountain with the state from April through September 2026. Adjusted for its size, the state rates it 3 of 5, the middle group. The BBB gives it an A+ letter grade.
Has Green Mountain Energy been fined?
Yes, once in the last 10 years. In 2016, the state approved a $900,000 penalty (Docket 46597). It named Green Mountain along with Reliant and two other NRG companies. The order didn't split the amount, so we count the full $900,000 against each company named.
Does Green Mountain's contract force arbitration?
No. Green Mountain’s home contract leaves out forced arbitration and any class-action waiver, so you can still take a dispute to court. Many big Texas providers, including TXU, can’t say that.
Is Green Mountain better than TXU?
TXU scores higher on our scorecard, 80 to 70, mainly because of its 5-of-5 complaint rating. But Green Mountain's plain plan costs less, it's 100% renewable instead of 3%, and its contract has no arbitration clause. Which is better depends on what matters most to you.
What is Green Mountain Energy's phone number?
Call 1-866-785-4668. The line is open 7 a.m. to 10 p.m. Central, seven days a week. For a power outage, call your utility instead, like Oncor at 1-888-313-4747 or CenterPoint at 713-207-2222.
Does Green Mountain Energy serve Dallas?
Yes, it serves the Oncor area, including Dallas. But it had no 12-month fixed plan listed for Dallas on Power to Choose as of October 4, 2026. You'll see its Dallas prices after you enter your address on its website.
Does Green Mountain have a solar buyback plan?
Yes, two. Renewable Rewards Solar Credit 12 pays a flat 6.3¢ per kWh in Dallas and 5.7¢ in Houston, with a $29.95 base charge. Solar Max 12 pays the ERCOT wholesale price. There’s no cap, and leftover credit is refunded after you leave. This isn’t part of our score.
What do you want to do next?
Every Texas guide, by topic
Browse every guide on the Texas hub. Or see every state's average price on our price map.
Sources and updates
Sources (12)
- Green Mountain Energy, Pollution Free e-Plus 12 Choice Electricity Facts Label for ZIP 77002 (CenterPoint), dated September 30, 2026.
- Green Mountain Energy, Residential Terms of Service: fees, deposits, cancellation, renewal and the absence of an arbitration clause.
- Power to Choose (PUCT), plan and provider data export, pulled October 4, 2026: Green Mountain complaint rating (3 of 5) and 1,000 kWh prices by utility.
- Public Utility Commission of Texas, Customer Complaint Statistics, April 1 to September 30, 2026.
- Power to Choose (PUCT), Retail Electric Provider Complaint Scorecard, September 2026 (complaint rates March 1 to August 31, 2026), which also lists Green Mountain’s license date, August 2, 2001.
- Better Business Bureau, Green Mountain Energy Company profile, checked October 4, 2026.
- PUCT Docket 46597, final order, December 16, 2016: $900,000 penalty naming Green Mountain Energy, Reliant Energy Retail Services, Everything Energy and US Retailers.
- U.S. Energy Information Administration, Electric Power Monthly, Table 5.6.A: Texas average residential price, July 2026 (15.88¢/kWh).
- NRG Energy, Inc., annual report (Form 10-K): ownership of Green Mountain Energy and audited financials.
- Green Mountain Energy, Renewable Rewards Solar Credit 12 fact label, Dallas, October 4, 2026.
- Green Mountain Energy, Renewable Rewards Solar Max 12 fact label, Dallas, October 4, 2026.
- Green Mountain Energy, Renewable Rewards Solar Credit 12 fact label, Houston, September 30, 2026.
Changelog · last updated October 16, 2026 · 6 updates
- October 16, 2026: Updated the chart and every count to the 25 companies we now score; Green Mountain now ties Direct Energy for eighth of 25. The solar note now covers the 10 companies whose solar plans we compared on October 5. An old link now goes straight to its current address. Green Mountain’s score is unchanged. We also added our new city guides, four new company reviews and the Smart Meter Texas guide to the guide map.
- October 13, 2026: Added a quick decision box, a date alert, yearly money-at-stake lines in the tools and next-step links. Added a score history box, including the change due December 16, 2026: the 2016 penalty leaves our 10-year window, which lifts the score to 82 if nothing else changes. Rewrote parts of the review in our own words, reworded our trust note so it stays true if we add partner links, and linked our Dallas rate and contract-ending guides plus a full list of Texas guides. No current figures or scores changed.
- October 12, 2026: Moved to theday.company/tx/green-mountain-energy-reviews; the old address forwards here. Updated links to our renamed Texas guides. No figures or scores changed.
- October 5, 2026 (solar update): Added a solar buyback section: every Green Mountain solar plan and its credit in Dallas and Houston, a calculator for what your extra power earns, and a chart comparing credits with what you pay. Each company in the 10-company chart now links to its review. Green Mountain’s score is unchanged.
- October 5, 2026: Score raised from 68 to 70, which moves Green Mountain from fair to good. Its terms say customers can give to its bill payment assistance program each month, which earns the 2 bill-help points under our published rule. We also updated the chart to all 10 companies we’ve scored.
- October 4, 2026: Review published. Score: 68 out of 100. Price from Green Mountain's September 30, 2026 fact label for Houston; Dallas (Oncor) 12-month fixed plan not listed on Power to Choose, so price scored on Houston only.
How to cite this page: The Day Company, "Is Green Mountain Energy worth it? Our 2026 review", updated October 16, 2026, https://theday.company/tx/green-mountain-energy-reviews.
Scores use public records only and the same formula for every company; see how we score. Prices are Green Mountain's own fact-label averages for the ZIP code shown, dated September 30, 2026, and change often; your price depends on your address and plan. The Day Company is not affiliated with Green Mountain Energy, NRG Energy or any retail electric provider. No company can pay for placement or a better score.