Green Mountain Energy vs Pronto Power
Quick Verdict
Key difference: Pronto Power has prepaid (no credit check). Green Mountain Energy runs your credit and might want a deposit.
If credit isn't an issue, compare both on ComparePower. If it is, you know your answer.
Only One Skips the Credit Check
Pronto Power has prepaid—no credit check, no deposit. Green Mountain Energy runs your credit and might want $200-400 upfront.
Complaint Comparison
PUCT Data • Jul-Dec 2025
Green Mountain Energy
Pronto Power
Green Mountain Energy has 6.0 fewer complaints per 10k customers
Trust & Reputation
External ratings comparison
Trust Score is a weighted average: Google (40%), BBB (35%), Trustpilot (25%)
The Verdict
- You want a company that's survived 27 Texas summers (Pronto Power has 8)
- You want green energy (it's mostly accounting, but Pronto Power doesn't even offer that)
- Your credit is rough and you need to skip the credit check—Green Mountain Energy will run your credit
- You need electricity today without a credit check
- You prefer prepaid to avoid surprise bills
- You're looking for Spanish-language service options
Category Breakdown
27 years vs 8—19+ more grid crises survived
Only Green Mountain Energy sells green plans (it's mostly accounting, but it's something)
Pronto Power skips the credit check. Green Mountain Energy might want $200-400 upfront.
Rates change constantly. Check ComparePower with your actual usage.
Side-by-Side Comparison
| Feature | Green Mountain Energy | Pronto Power |
|---|---|---|
| Parent Company | NRG Energy (NYSE: NRG) | Independent |
| Years in Texas | 27+ | 8+ |
| Headquarters | Austin, Texas | Houston, Texas |
| Fixed-Rate Plans | ||
| Variable Plans | ||
| Prepaid Options | ||
| Green Energy | ||
| Free Nights/Weekends | ||
| Deposit Required | Conditional | Conditional |
| Credit Check |
What Actually Differs
Green Mountain Energy and Pronto Power 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
Green Mountain Energy: Owned by NRG Energy (NYSE: NRG). 27 years in Texas—they've survived enough grid crises to prove they won't fold mid-contract. Based in Austin, Texas.
Pronto Power: Owned by Independent. 8 years in Texas—that track record matters when you're signing a multi-year contract. Based in Houston, Texas.
What They Actually Sell
Green Mountain Energy offers fixed-rate, variable-rate, green. They sell "green" plans (mostly accounting—same electrons, but they buy renewable credits).
Pronto Power offers fixed-rate, variable-rate, prepaid. They have prepaid—no credit check, no deposit, just pay as you go.
The Money Part
Green Mountain Energy: Deposit depends on credit—expect $200-400 if your score is below 600.
Pronto Power: 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 up to the "Choose if..." sections—they'll tell you which one fits your situation. For actual rates, check ComparePower. Takes 2 minutes.
Company Snapshots
Green Mountain Energy
- Parent Company
- NRG Energy (NYSE: NRG)
- Years in Texas
- 27+
- Headquarters
- Austin, Texas
- Deposit Required
- conditional
Pronto Power
- Parent Company
- Independent
- Years in Texas
- 8+
- Headquarters
- Houston, Texas
- Deposit Required
- conditional
More Head-to-Head Matchups
See who wins when Green Mountain Energy and Pronto Power face other competitors.
Featured In Best-Of Lists
See where Green Mountain Energy and Pronto Power are featured in our category guides.
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"I like that it searched multiple companies for me. So I don't have to search one by one. Saves time."
— Lacy L., Texas
See Current Rates
Compare current plans from both companies.
Frequently Asked Questions
Q: When should I choose Green Mountain Energy over Pronto Power? ▼
You want a company that's survived 27 Texas summers (Pronto Power has 8). You want green energy (it's mostly accounting, but Pronto Power doesn't even offer that).
Q: When should I choose Pronto Power over Green Mountain Energy? ▼
Your credit is rough and you need to skip the credit check—Green Mountain Energy will run your credit. You need electricity today without a credit check. You prefer prepaid to avoid surprise bills. You're looking for Spanish-language service options.
Q: What is the main difference between Green Mountain Energy and Pronto Power? ▼
Green Mountain Energy wins on track record, green energy. Pronto Power wins on credit flexibility. Both deliver identical electricity through the same wires—the difference is pricing structure, customer service, and plan options.
Q: Is Green Mountain Energy or Pronto Power 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, Green Mountain Energy or Pronto Power? ▼
Green Mountain Energy: 27 years. Pronto Power: 8 years. That 19-year gap matters—Green Mountain Energy survived the 2011 freeze, the 2021 disaster, and every summer in between. Track records like that don't happen by accident.
Q: Do Green Mountain Energy or Pronto Power offer no-deposit electricity? ▼
Pronto Power has prepaid—no credit check, period. Green Mountain Energy runs your credit and might want $200-400 upfront. If you've got credit issues, this isn't even a choice: Pronto Power.
Q: Which is better for green energy, Green Mountain Energy or Pronto Power? ▼
Green Mountain Energy sells "green" plans. Pronto Power doesn't. But here's what they don't tell you: "green" electricity in Texas is mostly accounting. They buy renewable energy credits to match your usage—the actual electrons flowing to your house are the same mix as everyone else. If the green marketing matters to you, Green Mountain Energy is your only option here. If you want actual environmental impact, check if they have renewable generation backing or just paper credits.
Q: What types of plans do Green Mountain Energy and Pronto Power offer? ▼
Green Mountain Energy: fixed-rate, variable-rate, green. Pronto Power: fixed-rate, variable-rate, prepaid. Similar variety. Both have enough options for most situations.
Q: Which is better overall, Green Mountain Energy or Pronto Power? ▼
Same grid. Same wires. Same electrons. The electricity is literally identical—the only differences are price, service, and plan options. Green Mountain Energy wins if you'll pay 15-25% more for authentic renewable energy--and feel good about it. Pronto Power wins if you need electricity today without a credit check. For everyone else? Whoever's cheaper for your usage right now. Check ComparePower—it takes 2 minutes.