Explore Constellation Plans
PROVIDER REVIEW
Constellation Review 2026
Constellation is a Fortune 500 energy company and the nation’s largest producer of carbon-free energy, serving Texas customers since 2001. After acquiring Houston-based StarTex Power in 2011, they expanded their Texas presence significantly. Customer sentiment is strong, with a 4.9-star rating and an impressive NPS of 88. Their regulatory track record is solid, with just 57 PUC complaints over the past year—well below the industry average of 120. Billing clarity (72/100) and customer service (74/100) scores suggest room for improvement in communication.
CONSTELLATION
Complete Provider Analysis
Constellation differentiates itself through bundled electricity and home services plans, including A/C protection with HVAC monitoring. Their Rewards program lets customers earn points for bill payments, redeemable for gift cards. New customers may benefit from up to $600 in annual usage-based credits and $150 ETF reimbursement when switching providers. Named a Top 5 Texas Electricity Provider six times in eight years, Constellation appeals to customers prioritizing stability and clean energy commitment.
2TIO NPS REVIEW
Customer Satisfaction Analysis
Our NPS (Net Promoter Score) methodology filters out incentivized reviews, bot-generated feedback, and competitor manipulation to give you an accurate picture of real customer satisfaction.
Score Breakdown
How We Calculate NPS Scores
Our proprietary algorithm analyzes thousands of customer reviews from multiple sources including Google, BBB, and the PUC. We filter out reviews that show signs of manipulation, including incentivized feedback, review bombing, and bot-generated content. The resulting score reflects genuine customer sentiment based on real experiences.
PUC COMPLAINT HISTORY
Public Utility Commission Data
The Texas Public Utility Commission tracks complaints filed against retail electricity providers. Below is Constellation’s complaint history from the PUC database.
Total Complaints (12 mo)
57
Complaints per 10K Customers
0.50
Industry Average
1.20
Billing Complaints
23
Slamming/Cramming
17
Service Quality
0
Monthly Complaint Trends (Jan 2022 – Mar 2026)
Complaint Categories Explained
Issues related to incorrect charges, unexpected fees, meter reading disputes, and payment processing problems. This is the most common category of complaints across all providers.
Slamming: Switching a customer’s electricity provider without proper authorization or consent.
Cramming: Adding unauthorized charges or services to a customer’s electricity bill.
Issues with customer service responsiveness, account management, communication quality, and overall service experience.
Complaints about improper service disconnection, insufficient notice before disconnection, or issues with reconnection after payment.
VERIFIED CUSTOMER REVIEWS
What Customers Are Saying
Real reviews from verified Constellation customers. We display a balanced selection of positive and critical feedback to give you the complete picture.
Positive Experiences
Verified
“I have gone through four Energy Providers, each with their own gimmick to entice you to switch. I’ll admit I’m a sucker for saving money because I’m retired and on a fixed income – every penny counts. When I signed up for Constellation service, I was hesitant at first, but when they came to optimize my HVAC and replaced failing parts FREE OF CHARGE with no trip fees and hassle-free performance by the most courteous technician, I was impressed! I encourage everyone to give them a try.”
Verified
“Went from a $600/mo (or higher) bill with Reliant to about $220/mo with Constellation. AWESOME!”
Verified
“The weekly update of electrical use and projected bill for the month gives a budgeting feature for a utility bill. If it is unusually high, it gives an opportunity to see what is running that shouldn’t be or something that needs to be turned off.”
Verified
“I have been a Constellation customer for 4 years now and couldn’t be happier with their service. I’ve never had any issues and the website is super easy to navigate. All of the information you need is there and easy to read.”
Verified
“I rated them four stars because I think most people don’t believe you when you put five, lol. All in all, Constellation is a pretty good company. I have not had any real large issues and any issue I did have was resolved fairly timely. I usually get prompt response from Customer Service and any issues with my bill are usually resolved both in my favor and to my satisfaction.”
Critical Feedback
Verified
“I’m a new customer but I’m already fairly skeptical of them as a carrier. Their identity verification process was a NIGHTMARE. It took multiple tries and eventually back-and-forth emails to be told that the reason my ID kept getting rejected was because my last name appears first on my driver’s license, followed by my first name. You’re verifying TEXAS IDs in TEXAS – how is this an actual customer-facing issue?”
Verified
“I renewed with them before my contract expired. I thought I was set for the next year. Somehow they could not find my info and switched me back to UI. Not happy at all!”
Verified
“These guys charge my 1 bedroom apartment, which I keep around 74 degrees and almost never turn lights on in, almost $250 a month. As a military member, they will not give me the military rates either. Choose someone else.”
FINAL VERDICT
Our Recommendation
Constellation: Recommended
Strong choice for clean energy with bundled services
Constellation earns our recommendation as a reliable option for Texas electricity customers. Backed by the nation’s largest clean energy producer, this established provider delivers impressive customer satisfaction metrics with a 4.9-star rating and an exceptional NPS score of 88, indicating customers consistently recommend the service. The customer service score of 74 and billing clarity score of 72 suggest solid but not exceptional operational performance in day-to-day interactions. On the regulatory front, Constellation’s 57 PUC complaints over the past 12 months falls well below the industry average of 120, demonstrating responsible business practices. The company’s standout appeal lies in its bundled electricity and home services plans, combined with genuine clean energy commitments. While billing transparency could improve slightly, Constellation’s combination of corporate stability, environmental focus, and strong customer loyalty makes it particularly well-suited for those prioritizing sustainability alongside dependable service.
Pros
- Exceptional 4.9/5.0 star rating indicates outstanding overall performance
- Industry-leading NPS score of 88 shows strong customer loyalty
- Excellent customer service score of 74/100 rating
- Clear billing communication with 72/100 transparency score
- Zero service quality complaints in past 12 months
- Less than half industry average PUC complaints (57 vs 120)
Cons
- Some billing statement clarity issues (23 related complaints)
- Slamming/cramming complaints present though relatively low (17 cases)
- Billing transparency score has room for improvement at 72/100
- Customer service score could improve beyond current 74/100
Best For
- Customers prioritizing clean and renewable energy options
- Those seeking bundled electricity and home services convenience
- Homeowners wanting a large, financially stable provider
- Environmentally conscious families and businesses
- Customers who value low complaint ratios and regulatory compliance
PRICE COMPARISON
How Constellation Compares
See how Constellation’s electricity rates compare to other Texas providers. Prices shown are averages based on the selected monthly usage level.
Constellation Avg Price
14.9¢/kWh
Market Rank
#4 of 17
vs Market Average
6.4% below
Market Average
15.9¢/kWh
All Texas Providers (1000 kWh/month)
| Rank | Provider | Avg ¢/kWh | Lowest | Highest | # Plans |
|---|---|---|---|---|---|
| #1 | Tara Energy | 13.70¢ | 11.51¢ | 17.59¢ | 14 |
| #2 | 4Change Energy | 14.06¢ | 7.60¢ | 19.62¢ | 35 |
| #3 | Energy Texas | 14.84¢ | 9.35¢ | 20.60¢ | 20 |
| #4 | Constellation This Provider | 14.88¢ | 12.92¢ | 16.52¢ | 11 |
| #5 | APGE | 14.99¢ | 7.30¢ | 23.60¢ | 90 |
| #6 | Atlantex Power | 15.41¢ | 13.88¢ | 17.40¢ | 15 |
| #7 | Rhythm Energy | 15.42¢ | 9.35¢ | 20.60¢ | 16 |
| #8 | Just Energy | 16.05¢ | 7.49¢ | 22.21¢ | 74 |
| #9 | Amigo Energy | 16.47¢ | 15.00¢ | 18.43¢ | 24 |
| #10 | Frontier Utilities | 16.99¢ | 7.48¢ | 22.42¢ | 30 |
| #11 | Gexa Energy | 17.04¢ | 7.48¢ | 22.42¢ | 30 |
| #12 | Payless Power | 18.08¢ | 17.88¢ | 18.19¢ | 8 |
| #13 | TXU Energy | 18.78¢ | 13.88¢ | 24.29¢ | 44 |
No 100% Renewable Plans
Constellation does not currently offer any 100% renewable energy plans. If green energy is a priority, consider providers like Green Mountain, Gexa Energy, or Rhythm Energy.
Our Methodology
How We Calculate NPS Scores
Our proprietary scoring system analyzes thousands of customer reviews to provide an unbiased assessment of each electricity provider.
- Data Source: Online Reviews from verified customers
- AI Analysis: We analyze each review to distill sentiment and filter out incentivized reviews, bot-generated content, and review bombing attempts
- True NPS Calculation: We calculate Net Promoter Score as (% Promoters) – (% Detractors), where Promoters rate 9-10 and Detractors rate 1-6
- Star Rating: NPS scores are mapped to a 3.0-5.0 star scale for intuitive comparison
About “Billing Clarity” Scores
This score measures how clearly a provider communicates billing to customers—not billing accuracy. Texas electricity providers have robust, audited billing systems that are highly accurate.
- What we measure: Clarity of bill statements, proactive notifications, explanation of credits and charges, time-of-use rate communication
- Why it matters: Customers often report confusion about bills even when charges are correct—this score reflects how well providers help customers understand their bills
- PUC “billing complaints”: Most are about confusing statements or unexpected (but legitimate) charges, not actual billing errors
Pricing Data Collection
We collect electricity plan pricing directly from official sources to ensure accuracy.
- Data Source: ComparePower, the original Texas electricity consumer advocate
- Update Frequency: Prices are synced daily from all 5 TDSP territories
- Usage Levels: We display pricing at 500, 1000, and 2000 kWh/month to show how rates vary by consumption
- Coverage: All 17 retail electricity providers in the Texas deregulated market
PUC Complaint Data
Complaint data provides insight into provider accountability and customer issues.
- Data Source: Texas Public Utility Commission (PUC) official complaint records
- History: 46+ months of historical complaint data (January 2022 – Present)
- Categories: Billing, Slamming/Cramming, Quality of Service, Disconnection, and Other
- Update Frequency: Monthly updates as new PUC data becomes available
Questions about our methodology? Contact our team.
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