Constellation vs TXU Energy

Overview

Does it even matter?

Same wires. Same grid. Same electrons. Both companies charge premium prices. If you’re comparing these two, you’ve already decided to pay more than you need to.

Here’s the uncomfortable truth: Neither Constellation nor TXU will save you money compared to Gexa, Frontier, or 4Change. You’re paying for brand recognition—Cowboys commercials on one side, Fortune 100 backing on the other.

Constellation is Exelon’s retail brand. Nationwide presence, low-key marketing, serious infrastructure.

TXU is the Texas institution. Here since before deregulation. Heavy marketing, tons of plan options, that jingle you can’t forget.

The real question: If you’re paying a premium either way, do you want Texas roots (TXU) or corporate simplicity (Constellation)? Or should you question the premium itself?

Company Backgrounds

Constellation comes from Exelon, one of the largest utility companies in America. They’re used to running power plants, managing grids, and serving millions of customers across multiple states. In Texas, they’re a retail player—they buy power and sell it to you.

TXU Energy traces back to Texas Utilities, the old monopoly. They were here before you could choose your electric company. Now owned by Vistra Corp, a $12+ billion company. They know Texas.

Both have Fortune 500 backing. TXU has Texas history.

Pricing Reality

Neither wins on price.

Both companies charge premium rates. You’re paying for corporate stability, not savings. If you want cheap electricity, look at Gexa, Frontier, or 4Change.

That said, Constellation occasionally has competitive introductory offers. TXU rarely does—they rely on brand loyalty.

Plan Options

TXU has more variety:

• Free Nights (shift usage to save)
• Free Weekends
• Time-of-use plans
• Indexed plans (wholesale pricing)
• Prepaid (no credit check)
• Standard fixed and variable

Constellation keeps it simpler:

• Fixed-rate plans
• Some green options
• That’s mostly it

If you want specialized plans, TXU wins. If you just want straightforward electricity, either works.

The Nationwide Question

Constellation serves multiple states. If you move around—maybe you have homes in Texas and another deregulated state—Constellation might be convenient. One company, multiple locations.

TXU is Texas-only. They do one thing well. If you’re staying in Texas, this doesn’t matter.

Customer Service

TXU wins on support infrastructure.

24/7 phone lines, Texas-based support, decades of handling Texas-specific issues (grid failures, summer peaks, hurricanes). They know the local utilities, the regulations, the quirks.

Constellation has decent support but less Texas-specific expertise. They’re a national company serving Texas, not a Texas company.

The Verdict

TXU for Texas expertise. Constellation for corporate simplicity.

Choose Constellation if:

• You want a lower-profile corporate option
• You operate in multiple states
• You don’t need fancy plan options
• The Exelon backing appeals to you

Choose TXU if:

• You want a company that knows Texas inside and out
• You need specialized plans (free nights, prepaid)
• 24/7 Texas-focused support matters
• Rewards and perks interest you

The honest take: Both are premium-priced corporate options. If you’re comparing these two, you’ve already decided you want a big company. TXU has more Texas roots and plan options. Constellation is simpler and more nationwide.

Related Pages

Company Profiles

• Constellation
• TXU Energy

Best-For Categories

• Best Electricity Companies in Texas — TXU ranks #1 as the Texas institution
• Best Green Energy Companies — Constellation ranks #2 for actual generation credentials
• Best Customer Service — TXU ranks #1 with 24/7 support and 5-minute average call time
• Best Month-to-Month — TXU Flex Rewards plan ranks #1 for flexibility
• Best for High Usage — TXU ranks #2 with competitive rates at 2,000+ kWh
• Best Same-Day Electricity — TXU ranks #2 for quick connections
• Best for Renters — TXU ranks #2 with flexible lease-matching plans

Related Comparisons

• TXU vs Reliant
• TXU vs Gexa
• TXU vs Direct Energy
• Constellation vs Reliant
• Constellation vs Direct Energy