Constellation vs Xoom Energy
Quick Verdict
Same wires. Same grid. Same electrons flowing to your house. The only real difference? Who sends you the bill and what they charge.
Since there's no major differentiator, this comes down to price. Check ComparePower for current rates.
What Actually Differs
Constellation and Xoom Energy deliver the exact same electricity through the exact same wires. The electrons don't care whose logo is on your bill. What differs: the price, the service when something goes wrong, and the fine print in contracts.
Who's Behind These Companies
Constellation: Owned by Constellation Energy Corporation (NASDAQ: CEG). 15 years in Texas—they've survived enough grid crises to prove they won't fold mid-contract. Based in Baltimore, Maryland.
Xoom Energy: Owned by NRG Energy (NYSE: NRG). 15 years in Texas—that track record matters when you're signing a multi-year contract. Based in Huntersville, North Carolina.
What They Actually Sell
Constellation offers fixed-rate, green. They sell "green" plans (mostly accounting—same electrons, but they buy renewable credits).
Xoom Energy offers fixed-rate, variable-rate, prepaid, green. They sell "green" plans (mostly accounting—same electrons, but they buy renewable credits). They offer a prepaid billing option.
The Money Part
Constellation: Deposit depends on credit—expect $200-400 if your score is below 600.
Xoom Energy: Deposit depends on credit—expect $200-400 if your score is below 600.
The Honest Answer
Both are legitimate. Neither is a scam. The electricity is identical. What matters is: (1) who's cheaper for your actual usage, (2) whether you need to skip a credit check, and (3) if you care about green marketing. Scroll down to "The Verdict" for the quick answer. For actual rates, check ComparePower. Takes 2 minutes.
See how they compare on price
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Category Breakdown
Both sell green plans—check who has actual renewable generation backing
Xoom Energy offers a prepaid option. Constellation requires standard credit enrollment.
Rates change constantly. Check ComparePower with your actual usage.
Side-by-Side Comparison
| Feature | Constellation | Xoom Energy |
|---|---|---|
| Parent Company | Constellation Energy Corporation (NASDAQ: CEG) | NRG Energy (NYSE: NRG) |
| Years in Texas | 15+ | 15+ |
| Headquarters | Baltimore, Maryland | Huntersville, North Carolina |
| Fixed-Rate Plans | ||
| Variable Plans | ||
| Prepaid Options | ||
| Green Energy | ||
| Free Nights/Weekends | ||
| Deposit Required | Conditional | Conditional |
| Credit Check |
Trust & Complaint Data ▼
Trust & Reputation
External ratings comparison
Trust Score is a weighted average: Google (40%), BBB (35%), Trustpilot (25%)
Complaint Comparison
PUCT Data • Jul-Dec 2025
Constellation
Xoom Energy
Constellation has 4.2 fewer complaints per 10k customers
The Verdict
- You want more green plan variety (check if they have actual renewable generation backing)
- You want a Fortune 500-backed provider with real generating assets behind the name
- Clean energy matters--and you want it from a company that actually owns power plants
- You prefer simple fixed-rate plans without free-nights gimmicks or tiered pricing games
- You want a prepaid pay-as-you-go option—Constellation doesn't offer one
- You want an NRG-backed provider with online signup and prepaid options
- You know an ACN rep you want to support through their direct sales channel
- You want the Freedom2Connect ETF buyout when switching providers
Done researching? See actual rates.
Constellation or Xoom Energy — find out which one is cheaper at your address.
Frequently Asked Questions
Q: When should I choose Constellation over Xoom Energy? ▼
You want more green plan variety (check if they have actual renewable generation backing). You want a Fortune 500-backed provider with real generating assets behind the name. Clean energy matters--and you want it from a company that actually owns power plants. You prefer simple fixed-rate plans without free-nights gimmicks or tiered pricing games.
Q: When should I choose Xoom Energy over Constellation? ▼
You want a prepaid pay-as-you-go option—Constellation doesn't offer one. You want an NRG-backed provider with online signup and prepaid options. You know an ACN rep you want to support through their direct sales channel. You want the Freedom2Connect ETF buyout when switching providers.
Q: What is the main difference between Constellation and Xoom Energy? ▼
Xoom Energy leads in credit flexibility. Both companies deliver the same electricity through the same grid—the real differences are in pricing, service quality, and available plan types.
Q: Is Constellation or Xoom Energy cheaper? ▼
Anyone who answers this without knowing your zip code and usage is lying. The "advertised rate" is calculated at exactly 1,000 kWh—use 800 or 1,200 and the math changes completely. Both companies exploit this. Check ComparePower with your actual usage. Takes 2 minutes, and you'll see real numbers instead of marketing.
Q: Which company has been in Texas longer, Constellation or Xoom Energy? ▼
Xoom Energy: 15 years. Constellation: 15 years. Similar track records. Both have survived enough Texas summers to prove they won't fold mid-contract.
Q: Do Constellation or Xoom Energy offer no-deposit electricity? ▼
Xoom Energy offers a prepaid option. Constellation doesn't have prepaid. Both run credit checks for standard plans and may require deposits based on your credit history.
Q: Which is better for green energy, Constellation or Xoom Energy? ▼
Both sell "green" plans. But "green" in Texas electricity means they buy renewable energy credits—it's accounting, not physics. Your electrons come from the same grid as everyone else. Want to know which has renewable generation backing versus just buying paper credits? Gexa has NextEra (the largest renewable generator in the US) behind them. Most others just buy credits. That's the difference.
Q: What types of plans do Constellation and Xoom Energy offer? ▼
Constellation: fixed-rate, green. Xoom Energy: fixed-rate, variable-rate, prepaid, green. Xoom Energy has more options (4 plan types vs 2). More options = more ways to optimize, but also more ways to pick wrong. If you just want simple fixed-rate power, ignore the complexity. If you have specific needs (EV charging at night, pool pump, work-from-home AC), the right specialty plan can save you $50/month.
Q: Which is better overall, Constellation or Xoom Energy? ▼
Same grid. Same wires. Same electrons. The electricity is literally identical—the only differences are price, service, and plan options. Constellation wins if you want a fortune 500-backed provider with real generating assets behind the name. Xoom Energy wins if you want an nrg-backed provider with online signup and prepaid options. For everyone else? Whoever's cheaper for your usage right now. Check ComparePower—it takes 2 minutes.
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