Explore Constellation Plans
PROVIDER REVIEW
Constellation Review 2026
Constellation brings significant scale to the Texas electricity market as the nation’s largest producer of carbon-free energy. Originally entering Texas in 2001 and expanding through their 2011 acquisition of Houston-based StarTex Power, the Fortune 500 company now serves approximately 2 million customers nationwide. Customer sentiment is notably strong, with a 4.9-star rating and an NPS of 88 reflecting high satisfaction levels. Their regulatory track record is also solid, with just 52 PUC complaints over the past 12 months—well below the industry average of 120.
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, while weekly usage alerts and monthly projections help with budget management. Customer service scores (74/100) and billing clarity (72/100) suggest room for improvement in these areas despite overall positive sentiment. The company’s commitment to clean energy—through nuclear, hydro, wind, and solar generation—may appeal to environmentally conscious consumers.
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)
52
Complaints per 10K Customers
0.50
Industry Average
1.20
Billing Complaints
20
Slamming/Cramming
18
Service Quality
0
Monthly Complaint Trends (Jan 2022 – Jan 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 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 your information you need is there and easy to read.”
Verified
“I’m so glad I made the switch to Constellation when I did. It was a nightmare with the previous company as I was constantly worried about how much my bill was going to be at the end of each billing cycle due to the lie they sold me on a free weekend plan. Since switching to Constellation, I no longer have to worry.”
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.”
Verified
“Reasonably priced electricity, super customer service AND free perks… highly recommend Constellation. Have been a customer for years and always a positive experience.”
Verified
“Joined Constellation after carefully shopping all options and think I found the best price with what has been a stellar company experience… and now earning fun, useful rewards are a possibility! Thank you Constellation!”
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. Which… okay… 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 dollars 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 backed by clean energy leadership
Constellation earns our recommendation as a reliable choice for Texas electricity customers. As the nation’s largest clean energy producer, they bring substantial resources and stability to the retail market. Customer sentiment is exceptionally strong, with a 4.9-star rating and an impressive NPS of 88, indicating high satisfaction and loyalty. Service scores are solid though not exceptional—customer service at 74/100 and billing clarity at 72/100 suggest room for improvement in day-to-day interactions. On the regulatory front, Constellation performs well with just 52 PUC complaints over 12 months, less than half the industry average of 120. This combination of strong customer advocacy, clean energy commitment, and below-average complaint volume makes Constellation a dependable option, particularly for those who value bundled services and environmental responsibility alongside their electricity plan.
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
- Zero service quality complaints filed in 12 months
- Complaint rate 57% below industry average (52 vs 120)
- Strong billing transparency score of 72/100 for clear communications
- Well-established provider with proven reliable service delivery
Cons
- Some billing statement clarity issues noted (20 related complaints)
- Slamming/cramming complaints present though relatively low (18 cases)
- Billing transparency score has room for improvement at 72/100
- Customer service score of 74 trails behind stellar star rating
Best For
- Customers prioritizing clean and renewable energy options
- Those seeking bundled electricity and home services packages
- Shoppers who value provider stability and financial backing
- Environmentally conscious households
- Customers wanting fewer hassles with regulatory complaints
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
15.9¢/kWh
Market Rank
#6 of 17
vs Market Average
5.2% below
Market Average
16.8¢/kWh
All Texas Providers (1000 kWh/month)
| Rank | Provider | Avg ¢/kWh | Lowest | Highest | # Plans |
|---|---|---|---|---|---|
| #1 | APGE | 13.18¢ | 8.79¢ | 20.54¢ | 57 |
| #2 | 4Change Energy | 14.57¢ | 8.79¢ | 19.87¢ | 35 |
| #3 | Just Energy | 14.79¢ | 6.48¢ | 21.75¢ | 53 |
| #4 | Tara Energy | 15.09¢ | 13.29¢ | 18.43¢ | 14 |
| #5 | Energy Texas | 15.21¢ | 9.63¢ | 20.86¢ | 20 |
| #6 | Constellation This Provider | 15.92¢ | 14.52¢ | 17.32¢ | 5 |
| #7 | Rhythm Energy | 16.21¢ | 9.63¢ | 20.86¢ | 16 |
| #8 | Discount Power | 16.30¢ | 9.00¢ | 22.63¢ | 26 |
| #9 | Cirro Energy | 16.42¢ | 9.00¢ | 22.61¢ | 26 |
| #10 | Atlantex Power | 16.62¢ | 15.00¢ | 18.50¢ | 10 |
| #11 | Frontier Utilities | 17.57¢ | 8.95¢ | 22.42¢ | 30 |
| #12 | Gexa Energy | 17.62¢ | 8.95¢ | 22.42¢ | 30 |
| #13 | Amigo Energy | 17.94¢ | 16.43¢ | 19.80¢ | 24 |
| #14 | Reliant | 18.05¢ | 13.86¢ | 24.21¢ | 51 |
| #15 | Direct Energy | 18.47¢ | 15.46¢ | 23.58¢ | 20 |
| #16 | TXU Energy | 19.15¢ | 14.50¢ | 24.54¢ | 44 |
| #17 | Payless Power | 19.24¢ | 18.56¢ | 19.99¢ | 8 |
| #18 | Green Mountain | 20.12¢ | 17.49¢ | 25.23¢ | 24 |
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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