Provider comparison

Green Mountain vs Reliant Energy

Green Mountain and Reliant both charge premium prices, for different reasons. Green Mountain is built around renewable energy and keeps most of its plans simple, while Reliant sells a big-brand experience and one of the broadest catalogs in Texas. If green energy matters to you, Green Mountain is the better choice.

Last reviewed November 2, 2026

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Green Mountain vs Reliant at a Glance

Both price above the market average, and both deliver a polished, mature customer experience. Green Mountain has focused on renewable energy since 1997 and mainly offers straightforward fixed-rate plans, though it now also sells bill-credit and time-of-use plans. Reliant offers even more plan types, including prepaid plans, plus home services.

Both providers are graded on the same four criteria. The higher grade in each row is shown in purple.

CriterionGreen MountainReliant
Overall grade
C+
C+
Price Competitiveness
C-
C (higher grade)
Pricing Transparency
B- (higher grade)
C+
Customer Experience
A-
A-
Renewal Practices
B (higher grade)
B-
Our award
Best for Green Energy
—
Lowest 12-month fixed rate
15.3¢/kWh
14.9¢/kWh
Contract lengths
8 to 36 months
8 to 24 months
Customer service
866-785-4668
866-222-7100

Grades last reviewed November 3, 2026. Rates are each provider's lowest 12-month fixed-rate plan at 1,000 kWh in the Houston (CenterPoint) area, excluding bill-credit and prepaid plans, refreshed daily. How we grade

Our four criteria

How Green Mountain and Reliant Compare

  1. Price Competitiveness

    Green Mountain C-Reliant C

    Both price above the market average. Green Mountain competes on renewable energy rather than price, and Reliant competes on brand and service. Shoppers focused on the lowest bill will usually find cheaper options elsewhere.

  2. Pricing Transparency

    Green Mountain B-Reliant C+

    Green Mountain is ahead. Most of its plans are straightforward fixed-rate plans, although it now also sells some bill-credit and time-of-use plans. Reliant does sell simple fixed-rate plans, but much of its lineup comes with conditions: a lower rate only after the first 1,000 kWh, free nights or weekends, bill credits in months you choose, and bundles with smart home equipment or gift cards. These plans can cost more than they look unless they fit how you use electricity.

  3. Customer Experience

    Green Mountain A-Reliant A-

    Evenly matched. Both are established providers with mature digital tools and a polished enrollment experience. Reliant's app is one of the best in Texas.

  4. Renewal Practices

    Green Mountain BReliant B-

    Green Mountain generally avoids aggressive introductory offers, though you should still compare its renewal offer with the market. Reliant's renewal offers rarely match current market rates, so shop around before you renew.

Other Differences

  • Renewable energy

    Renewable energy is Green Mountain's entire business, with one of the broadest green plan lineups in Texas. Reliant sells renewable plans as one product line among many.

  • Extras beyond electricity

    Reliant offers smart home technology through Vivint, home protection plans and solar programs. Green Mountain's Sun Club supports nonprofit environmental and sustainability projects.

  • Prepaid plans

    Reliant offers prepaid plans. Green Mountain does not.

Plan options

Plan Types Each Provider Offers

Which of the major Texas plan categories each provider currently offers. Availability varies by service area, so confirm during enrollment.

Plan typeGreen MountainReliant
  • Fixed-Rate PlansOfferedOffered
  • Bill Credit PlansOfferedOffered
  • Time-of-Use PlansOfferedOffered
  • EV PlansOfferedOffered
  • Solar Buyback PlansOfferedOffered
  • 100% Renewable PlansOfferedOffered
  • Prepaid Plans—Not offeredOffered

Neither provider offers: Home Battery Programs.

Not sure which plan type fits your home? Explore Texas electricity plan types

Current plans

Green Mountain and Reliant Plans and Rates

Each provider's lowest-priced current plans at 1,000 kWh, refreshed daily. Compare plans at your own usage, not the advertised rate, and check the Electricity Facts Label before you enroll. Prices shown for the Houston (CenterPoint Energy) service area.

Green Mountain Energy Plans

  • Pollution Free e-Plus 8 Choice

    View EFL

    Term: 8 months

    Features: Fixed · 100% Renewable · New customers only

    Price at 1,000 kWh: 14.5¢/kWh

  • Pollution Free e-Plus 12 Choice

    View EFL

    Term: 12 months

    Features: Fixed · 100% Renewable · New customers only

    Price at 1,000 kWh: 15.3¢/kWh

  • Pollution Free e-Plus 24 Choice

    View EFL

    Term: 24 months

    Features: Fixed · 100% Renewable · New customers only

    Price at 1,000 kWh: 15.4¢/kWh

  • Pollution Free e-Plus 36 Choice

    View EFL

    Term: 36 months

    Features: Fixed · 100% Renewable · New customers only

    Price at 1,000 kWh: 15.7¢/kWh

  • Pollution Free e-Plus Choice

    View EFL

    Term: Month-to-month

    Features: Variable · 100% Renewable · New customers only

    Price at 1,000 kWh: 18.0¢/kWh

Reliant Energy Plans

  • Reliant Power On 8 Plan

    View EFL

    Term: 8 months

    Features: Fixed · 22% Renewable · New customers only

    Price at 1,000 kWh: 14.0¢/kWh

  • Reliant Power On 13

    View EFL

    Term: 13 months

    Features: Fixed · 22% Renewable · New customers only

    Price at 1,000 kWh: 14.8¢/kWh

  • Reliant Power On 18

    View EFL

    Term: 18 months

    Features: Fixed · 22% Renewable · New customers only

    Price at 1,000 kWh: 14.8¢/kWh

  • Reliant Power On 12 Plan

    View EFL

    Term: 12 months

    Features: Fixed · 22% Renewable · New customers only

    Price at 1,000 kWh: 14.9¢/kWh

  • Reliant Power On 24 Plan

    View EFL

    Term: 24 months

    Features: Fixed · 22% Renewable · New customers only

    Price at 1,000 kWh: 15.3¢/kWh

Our recommendation

Which Should You Choose?

Choose Green Mountain if

  • Renewable energy is a priority for you
  • You want simple fixed-rate pricing
  • You're willing to pay more for a company built around clean power
Read our Green Mountain Energy review

Choose Reliant if

  • You want a broad range of plan types, including prepaid plans
  • You'd like smart home, home protection or solar services from the same company
  • A top-rated mobile app matters most to you
Read our Reliant Energy review

Still deciding between Green Mountain and Reliant? Tell us about your home and we'll recommend the plan that fits your usage, even if it's from another provider.

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Our picks

What We Recommend Instead

If price matters more to you than brand, both are hard to justify. These are our picks for a lower bill, or for simple pricing and fair renewals.

  • Best for Maximum Savings

    Rhythm Energy

    B+

    For the lowest bill. Rhythm competes aggressively on price, and every Rhythm residential plan is backed by 100% renewable energy.

    Read our Rhythm Energy review

  • Best at the Basics

    Champion Energy

    A-

    For service and stability. Straightforward fixed-rate plans, reliable customer service and fair treatment at renewal.

    Read our Champion Energy review

See every graded provider in our Best Electricity Providers in Texas rankings.

Questions

Green Mountain vs Reliant: Common Questions

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