Constellation vs TXU Energy: Texas Electricity Head-to-Head
Constellation offers 24 plans starting at 10.9c/kWh while TXU Energy has 54 plans from 10.5c/kWh across all 6 Texas TDU service areas. Here is how their rates, terms, renewable options, and fees compare.
Rate Curve Comparison
Lowest average rate across all usage levels (11.0c/kWh vs 13.0c/kWh). Consistent pricing regardless of how much electricity you use.
Below 1,000 kWh, Constellation tends to be cheaper. Above that, TXU Energy has the edge.
Shows the best available all-in rate from each provider at 500, 1,000, and 2,000 kWh usage levels. The best plan may differ at each tier.
Best Plan Per Term Length
| Term | Constellation Best Plan | Rate | Fee | TXU Energy Best Plan | Rate | Fee | Winner |
|---|---|---|---|---|---|---|---|
| 6 Month | Simple Switch 3EFL | 10.9c | $50 flat | Flex ForwardEFL | 19.1c | None | Constellation |
| 12 Month | 12 Month Usage Bill Credit EFL | 11.3c | $150 flat | Smart 1000 Select 12EFL | 10.5c | $150 flat | TXU Energy |
| 24 Month | 14 Month Usage Bill CreditEFL | 11.8c | $150 flat | N/A | N/A | N/A | Constellation |
| 36 Month | 36 Month Usage Bill CreditEFL | 13.3c | $150 flat | N/A | N/A | N/A | Constellation |
Plan Type Breakdown
Constellation
TXU Energy
Cancellation Fee Comparison
Constellation
TXU Energy
Renewable Energy Deep Dive
Constellation
TXU Energy
Full Plan Tables
Which Provider Fits You Better?
Looking for the Lowest Rate?
Better fit: TXU Energy
TXU Energy has the lower advertised rate at 10.5c/kWh (1,000 kWh usage), compared to 10.9c/kWh.
Want a Long-Term Price Lock?
Better fit: Constellation
Constellation has the better option for locking in a rate on a 24-month or longer contract.
Going Green?
Better fit: Constellation
Constellation offers more 100% renewable plans (1 vs 0).
Need Flexibility?
Better fit: TXU Energy
TXU Energy has more flexible cancellation terms, including short-term or lower-commitment plans.
These rates are based on 1,000 kWh average usage. Your actual savings depend on YOUR usage pattern.
WattTrim analyzes your real Smart Meter data to find the plan that saves you the most - across all providers, not just these two.
Always Free
Trim My BillFrequently Asked Questions
Is Constellation cheaper than TXU Energy?
Based on current plan data, TXU Energy has the lower advertised rate, offering plans starting at 10.5c/kWh compared to 10.9c/kWh from the other provider at 1,000 kWh of usage. Your actual cost depends on your usage pattern and the specific plan you choose.
Does Constellation offer renewable energy plans compared to TXU Energy?
Constellation offers 1 plan (4% of its lineup) at 100% renewable energy, while TXU Energy offers 0 plans (0% of its lineup).
What are the cancellation fees for Constellation vs TXU Energy?
Constellation charges $50 - $150 on its tracked plans, while TXU Energy charges $150 - $150 (mixed fee types) on its tracked plans. Always review the Electricity Facts Label (EFL) for the exact fee structure before enrolling.
Which provider has more plan options in Texas, Constellation or TXU Energy?
TXU Energy currently offers more plan options across the Texas TDU areas we track, with 54 plans compared to 24.
Can I switch from Constellation to TXU Energy?
Yes. Texas is a deregulated electricity market, so you can switch retail electric providers at any time. If you are still under contract with your current provider, check for an early termination fee before switching. New service with either provider typically starts within 1 to 5 business days of enrollment.