Constellation Energy review
Constellation is an independent, S&P 500 national supplier with the lowest complaint rate in this set and unusual niche plans — EV, HVAC protection, green. Here's an honest look, and where Base fits.
Compare your Base rate to Constellation Energy in about two minutes.
Researched and written by the Base Power team · Last updated May 27, 2026
How we review: we pull each provider's ownership, plan structure, and fees from public filings and Electricity Facts Labels, and cite every review score to a named third party. Rates and scores change — we link the sources so you can check the current numbers.
The verdict
Constellation fits Texans who want a financially rock-solid national supplier with a notably low complaint rate and niche options — EV plans, bundled HVAC protection, or green energy. It's less ideal for set-it-and-forget-it customers who won't re-shop at renewal, since its edge is mid-pack pricing that can step up after the intro term, and it offers no Texas satisfaction guarantee.
The company
Who is Constellation Energy?
Constellation is one of the largest competitive energy suppliers in the U.S. and, since a February 2022 spinoff from Exelon, an independent S&P 500 company (and the nation's largest producer of carbon-free electricity). It is not an NRG or Vistra brand. Its Texas residential arm, Constellation NewEnergy, entered the market by acquiring Houston's StarTex Power in 2011.
What makes Constellation interesting in Texas is plan breadth that few rivals match — alongside ordinary fixed and bill-credit plans, it sells EV-charging plans, HVAC/A-C protection warranty plans, and 100% renewable options. Its scores reflect a stable, national operator: the highest unsolicited rating in this set and the lowest regulatory complaint rate, paired with mid-pack pricing.
Founded
1999 (Texas retail via 2011 StarTex acquisition)
Headquarters
Baltimore, MD
Parent company
Constellation Energy Corporation (Nasdaq: CEG)
Ownership: Constellation is an independent S&P 500 company that was spun off from Exelon in February 2022; it is not owned by NRG or Vistra. Its Texas residential business runs through Constellation NewEnergy, Inc. and traces to the 2011 acquisition of Houston's StarTex Power.
Scale & coverage: Constellation Energy a national supplier with ~2 million+ retail customers (Texas-specific count not separately disclosed), across deregulated Texas — CenterPoint, Oncor, AEP Texas, and TNMP.
Plans & pricing
Constellation Energy plans and rates
Constellation's advertised rates are as advertised in late May 2026 and varies by utility zone and usage — treat these as representative, not a quote, and check the live Electricity Facts Label on Power to Choose before you sign up.
Fixed-rate
Terms roughly 9–36 months; straightforward energy pricing.
EV plans (FreeCharge / FlexCharge)
Plans tuned for electric-vehicle charging — a niche few competitors offer.
HVAC / A-C protection
Bundles an equipment-protection warranty with the electricity plan.
Green & bill-credit
100% renewable options and usage-threshold bill-credit plans.
Rate at 1,000 kWh
~12.1–12.8¢/kWh (featured plans)
Mid-pack pricing; EV (~13.3–13.8¢) and green (~14.8¢) plans run higher.
Renewal behavior
Rates can step up sharply after the fixed term
Re-shop at renewal — the edge is the intro rate.
Texas satisfaction guarantee
Not offered
Limited early-cancel flexibility versus some competitors.
The fine print
Constellation Energy fees and the fine print
Constellation's bill is its energy charge plus the pass-through TDU delivery charges your utility sets. Pricing is mid-pack rather than cut-rate, and two things are worth knowing: rates can step up notably once a fixed term ends, and Constellation doesn't offer a Texas satisfaction guarantee — so the value is best captured by re-shopping at renewal. Confirm the early-termination fee on your plan's EFL.
Every Texas provider passes the same regulated TDU delivery charges through to you, so delivery isn't where providers actually compete — the energy charge and plan structure are. Always pull the Electricity Facts Label and compare the all-in cost at your real usage.
What customers say
Constellation Energy customer reviews
Constellation has the steadiest review profile in this set: the highest unsolicited Texas Electricity Ratings score (3.2/5), an A+ BBB accreditation dating to 2013, and a regulatory complaint count well below the industry average. That doesn't make it the cheapest, but it does make it the most consistent operator here — the kind of profile you'd expect from a large, financially stable national supplier.
Texas Electricity Ratings
3.2 out of 5
579 reviews
The highest unsolicited score in this comparison set (as of May 2026).
View source →Better Business Bureau
A+ (accredited)
BBB-accredited since 2013 (Constellation NewEnergy, verified May 2026).
View source →PUCT complaints
~53 / year
Well below the per-provider industry average — a genuine strength.
View source →Review scores are point-in-time and were last checked May 27, 2026; follow each link for the current figure. We cite third-party sources rather than publishing our own customer quotes.
Where it falls short
Common Constellation Energy complaints
- Billing issues and unexpected charges.
- Long customer-support wait times.
- Post-promo rate step-ups — higher-than-expected bills after the fixed term ends.
Constellation's regulatory signal is a genuine bright spot: roughly 53 PUC complaints in a recent trailing year, well under the per-provider industry average. Combined with the highest unsolicited review score in this set, it's the most stable complaint profile of the seven.
In fairness
What Constellation Energy is genuinely good at
- National scale and financial strength — an independent S&P 500 supplier and the largest U.S. producer of carbon-free electricity.
- The lowest regulatory complaint rate in this set and an A+, BBB-accredited standing.
- Plan breadth few rivals match — EV plans, HVAC/A-C protection warranties, and green options under one roof.
Side by side
Constellation Energy vs. Base
Constellation's strength is breadth and stability, with pricing that rewards re-shopping at renewal. Base's model is built so you don't have to: one flat energy rate (advertised at 8¢/kWh) at any usage, a flat monthly membership, pass-through TDU delivery, and an optional whole-home battery as a separate product — no intro rate to time and no step-up to catch. If you want niche options like an HVAC-protection bundle, Constellation has them; if you want flat simplicity, that's Base's lane.
Flat & clear | Constellation Energy | |
|---|---|---|
| Energy pricing | Flat 8¢/kWh at any usage Advertised energy charge | Varies by plan Often tiered, bill-credit, or time-of-use |
| Monthly charge | Flat $19–$29 membership | Energy charge + any plan fees |
| TDU delivery | Passed through, no markup | Passed through, no markup |
| Optional whole-home battery (separate product) | yes | no |
| Bottom line | Delivery charges are identical no matter who you pick — compare the all-in energy cost at your real usage on each EFL. | |
You can obtain important standardized information that will allow you to compare this product with other offers. Contact Base Power at 512-518-1009 or basepowercompany.com.
Constellation Energy review FAQs
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Sources
- Wikipedia — Constellation Energy (Exelon spinoff 2022)
- BBB — Constellation NewEnergy (A+, accredited)
- Texas Electricity Ratings — Constellation
- Power to Choose — official PUCT marketplace (compare EFLs)
- U.S. EIA — Electric Power Monthly, Table 5.6.A (Mar 2026)
Plan documents: Electricity Facts Label (EFL) · Terms of Service & Your Rights as a Customer. Products and pricing are offered to qualified customers in Texas only.