Just Energy vs Spark 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
Just Energy and Spark 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
Just Energy: Owned by IGS Energy (acquired July 2025). 22 years in Texas—they've survived enough grid crises to prove they won't fold mid-contract. Based in Houston, Texas.
Spark Energy: Owned by Via Renewables (private, W. Keith Maxwell III). 27 years in Texas—that track record matters when you're signing a multi-year contract. Based in Houston, Texas.
What They Actually Sell
Just Energy offers fixed-rate, free-nights, free-weekends, green. They sell "green" plans (mostly accounting—same electrons, but they buy renewable credits).
Spark Energy offers fixed-rate, variable-rate, free-nights, green. They sell "green" plans (mostly accounting—same electrons, but they buy renewable credits).
The Money Part
Just Energy: Deposit depends on credit—expect $200-400 if your score is below 600.
Spark 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
27 years vs 22—5+ more grid crises survived
Both sell green plans—check who has actual renewable generation backing
Rates change constantly. Check ComparePower with your actual usage.
Side-by-Side Comparison
| Feature | Just Energy | Spark Energy |
|---|---|---|
| Parent Company | IGS Energy (acquired July 2025) | Via Renewables (private, W. Keith Maxwell III) |
| Years in Texas | 22+ | 27+ |
| Headquarters | Houston, Texas | Houston, Texas |
| 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
Just Energy
Spark Energy
Spark Energy has 0.9 fewer complaints per 10k customers
The Verdict
- You want plan variety--14 plans on ComparePower plus free nights and weekends sold direct
- You prefer longer contract options up to 36 months for rate stability
- You want to add 100% renewable energy to any plan for $9.99/month
- You want flat-rate billing that stays the same every month (under a usage cap)
- You want green options including carbon-neutral natural gas--rare in Texas
- You prefer a company with 27 years of Texas operating history
Done researching? See actual rates.
Just Energy or Spark Energy — find out which one is cheaper at your address.
Frequently Asked Questions
Q: When should I choose Just Energy over Spark Energy? ▼
You want plan variety--14 plans on ComparePower plus free nights and weekends sold direct. You prefer longer contract options up to 36 months for rate stability. You want to add 100% renewable energy to any plan for $9.99/month.
Q: When should I choose Spark Energy over Just Energy? ▼
You want flat-rate billing that stays the same every month (under a usage cap). You want green options including carbon-neutral natural gas--rare in Texas. You prefer a company with 27 years of Texas operating history.
Q: What is the main difference between Just Energy and Spark Energy? ▼
Spark Energy leads in track record. Both companies deliver the same electricity through the same grid—the real differences are in pricing, service quality, and available plan types.
Q: Is Just Energy or Spark 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, Just Energy or Spark Energy? ▼
Spark Energy: 27 years. Just Energy: 22 years. Similar track records. Both have survived enough Texas summers to prove they won't fold mid-contract.
Q: Which is better for green energy, Just Energy or Spark 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 Just Energy and Spark Energy offer? ▼
Just Energy: fixed-rate, free-nights, free-weekends, green. Spark Energy: fixed-rate, variable-rate, free-nights, green. Similar variety. Both have enough options for most situations.
Q: Which is better overall, Just Energy or Spark Energy? ▼
Same grid. Same wires. Same electrons. The electricity is literally identical—the only differences are price, service, and plan options. Just Energy wins if you want plan variety--14 plans on comparepower plus free nights and weekends sold direct. Spark Energy wins if you want flat-rate billing that stays the same every month (under a usage cap). For everyone else? Whoever's cheaper for your usage right now. Check ComparePower—it takes 2 minutes.