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Green Mountain Energy vs. Constellation

Don't overpay for electricity. Get the inside scoop on which provider fits your home best.

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  • Texas Electricity Providers
  • Green Mountain Energy vs. Constellation

Green Mountain Energy vs. Constellation: Which Company is Right for You?

Trying to decide between Green Mountain Energy and Constellation for your home’s power needs? You’re not alone.

Both of these providers have some great offerings, but they’ve got their own unique features when it comes to powering your home.

We’re here to set the record straight on what these companies do well and give you a comprehensive comparison to make your decision easy.

Key Takeaways

  • Green Mountain Energy keeps it 100% renewable across all plans.
  • Constellation is always available with 24/7 customer service.
  • All electricity is the same. Your electricity comes from your TDU–not your provider.
  • Advertised rates are often misleading because they are tied to exact usage levels.
  • Live Link™ helps you find the best deal by factoring in your real electricity usage.
Show Summary

Table of Contents

Green Mountain Energy vs. Constellation: Which Company is Right for You?
Side-by-Side: Green Mountain Energy and Constellation
Your Quick-Pick Guide
Is Green Mountain Energy or Constellation cheaper?
Green Mountain Energy
Constellation Energy
Customer Reviews & Ratings
What No One’s Telling You
How to Choose the Right Plan
Power Up Your Savings Today

Side-by-Side: Green Mountain Energy and Constellation

FeatureGreen Mountain EnergyConstellation Energy
Plan OptionsFixed, 100% RenewableFixed, Variable, Renewable
Contract Lengths24 Months12, 24 Months
Early Termination Fee$295$150-$295
Same Day ConnectionUntil 5 pm Mon-SatUnavailable
Renewable Energy OptionsYes (All plans)Partial and 100% Renewable Plans
Mobile AppYesYes
Customer Service7 am to 10 pm CST24/7 Support
Community InvolvementSupports local solar projectsBill Support for Customers

Compare Green Mountain Energy & Constellation Rates

Your Quick-Pick Guide

If you…Shop
Are searching for exclusively renewable plansGreen Mountain Energy
Prioritize 24/7 customer supportConstellation

Is Green Mountain Energy or Constellation cheaper?

Green Mountain Energy and Constellation prices can vary based on several factors, including your location, usage, and bill credits.

  • Green Mountain Energy
  • Constellation

0 Texas Electric Rates

Plan Name Plan Length Rate

These live rates for service area were updated on May 27, 2025 at 8:01 pm CST. Pricing shown is based on an exact usage of 2000 kWh.

7 Texas Electric Rates

Plan Name Plan Length Rate
Constellation - 12 Month (No Min Usage Fee)12 months$0.168 / kWh
Constellation - 12 Month GREEN (No Min Usage Fee)12 months$0.179 / kWh
Constellation - 12 Month GREEN Usage Bill Credit12 months$0.157 / kWh
Constellation - 12 Month Usage Bill Credit12 months$0.149 / kWh
Constellation - 12Mo Usage Bill Credit + A/C Protection for 1 Unit and HVAC Monitoring12 months$0.153 / kWh
Constellation - 12Mo Usage Bill Credit + A/C Protection for 2 Units and HVAC Monitoring12 months$0.153 / kWh
Constellation - 24 Month Usage Bill Credit24 months$0.152 / kWh

These live rates for ONCOR ELECTRIC DELIVERY COMPANY service area were updated on May 27, 2025 at 7:59 pm CST. Pricing shown is based on an exact usage of 1000 kWh.

While most companies offer competitive rates, it’s important to remember:

  1. Rates fluctuate: Electricity prices change frequently.
  2. Usage matters: Your total bill depends on how much electricity you use.
  3. Promotions and discounts: Both providers often run special promotions that can significantly affect pricing.

Pro tip: Remember that the lowest advertised price isn’t always the best option. To find the best deal, compare plans based on your household’s unique energy needs and usage patterns.

Ready to find a power plan that fits your needs? Shop the right way today.

Find your best plan with Live Link™ →

Green Mountain Energy

Green Mountain Energy has been Texas’ go-to for 100% renewable energy since 1997. They’re all about making it easy for Texans to go green without the hassle.

Green Mountain Energy Highlights

  • Every plan is 100% renewable – no exceptions
  • Supports local solar projects in Texas
  • Offers tools to track your environmental impact
  • Gives back through their Sun Club program
  • Award-winning for helping Texans reduce carbon footprints

Best for: Green

Constellation Energy

Constellation Energy has been lighting up homes since 1998. They offer a variety of plans to fit different needs.

Constellation Energy Highlights

  • Offers a range of plans including fixed-rate, variable-rate, and renewable energy options
  • Provides online account management and a mobile app
  • 24/7 customer support
  • Offers renewable energy plans powered by 100% wind or solar energy
  • Provides additional services like HVAC maintenance and home protection plans in select locations

Customer Reviews & Ratings

Green Mountain Energy: 4 stars average on Google (2,800+ reviews)

Highlights:

  • Customers love the consistent service, helpful support team, and their well-planned solar perks.
  • The good reviews really highlight how serious they are about green energy.

Common complaints:

  • Some customers are feeling the sting of higher-than-expected rates and tough-to-change contracts.
  • A few folks ran into trouble getting refunds and were surprised by sudden contract transfers.

Constellation Energy: 4.6 stars average on Google (2,900+ reviews)

Highlights:

  • Customers appreciate the user-friendly energy usage reports
  • Many are impressed with their thorough customer support

Common complaints:

  • Some users experienced issues with billing and contract terms
  • A few reported difficulties when trying to switch providers

Green Mountain Energy vs. Constellation Reddit

Green Mountain Energy draws praise for their commitment to clean energy, but there’s a common heads-up from customers – you’ll likely pay more for those eco-friendly plans.

Over at Constellation Energy, the initial rates and variety of plans catch people’s attention, but we’re seeing quite a few red flags.

Customers warn about rates jumping up after those intro deals end, hidden fees showing up on bills, long waits for customer service, and tough contract cancellation policies.

The bottom line? Take your time comparing plans carefully before you commit.

Those attractive intro rates aren’t the whole story – compare all your options so you get the best plan for your home.

What No One’s Telling You

1. Same power, different name. No matter who you pick a plan from, your electricity is delivered by the same company—your TDU (Transmission and Distribution Utilities) .

TDUs like CenterPoint in Houston or Oncor in Dallas own and maintain the poles and wires that deliver electricity.

This means your power’s reliability is the same no matter who you sign up with. And the Public Utility Commission of Texas (PUCT) oversees and regulates all of them.

So the brand itself doesn’t impact the electricity you receive. Now why would you pay extra for a bigger name?

2. Advertised rates are a trap. You’ve probably seen ads for ultra-low rates. But those rates are usually tied to exact usage amounts—500 or 1,000 kWh.

Those rates look great on paper but are almost impossible to hit in real life.

Why?

Every month you use a different amount of electricity, so the rate you see might not be the rate you pay.

3. Beware of holdover rates. What happens when your contract expires?

If you don’t switch to a new plan, you’re now the winner of a holdover rate.

Holdover rates equal big bills, especially during Texas heatwaves or winter storms.

Don’t let your contract lapse—always switch or renew your plan before it expires.

Pro Tip: Shop for plans in a comparison marketplace to get a complete picture of the best available options based on your actual usage.

Compare Plans & Rates in Texas

How to Choose the Right Plan

Don’t get overwhelmed by all these electricity options. Finding the best plan for your home can be quick and easy with the right approach and tools.

Sign Up and Save With Live Link™

Say goodbye to guesswork and hello to personalized savings with Live Link™. This innovative feature taps into your actual energy usage data to find the perfect electricity plan for your home. Here’s why Texans love Live Link™:

  • Effortless Accuracy: No more digging through old bills or estimating your usage. Live Link™ securely pulls your real consumption data with just a click.
  • Tailored Recommendations: Get plan options customized to your unique energy habits, not generic estimates.
  • True Cost Clarity: See the full picture of your electricity costs, including how seasonal changes affect your bill.
  • Big Savings: By matching you with plans that fit your actual usage, Live Link™ could save you hundreds each year.

Ready to find your best plan? Try Live Link™ now – it’s free, fast, and could be your ticket to lower electric bills.

Try Live Link™ Free →

Don’t settle for one-size-fits-all plans. Let Live Link™ do the heavy lifting and find you a plan that truly fits your home’s needs.

Looking for a DIY approach?

This 2-minute video explains everything you need to know ⤵️

Power Up Your Savings Today

Ready to find the best electricity plan for your home?

Enter your zip code to compare rates and features from Green Mountain Energy, Constellation, and other top providers in your area.

Get Today's Lowest Rates

Compare Power Author Graham Griffin
Author:
Graham Griffin
Enri author
Editor:
Enri Zhulati
ComparePower 57500 5-Star Ratings Reviews

Any product or company names, marks, or logos shown on this page are the property of their respective owners. Compare Power is an unaffiliated, independent marketplace. Get unbiased, accurate information backed by our commitment to editorial integrity.

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