The most important factor when choosing an electric supplier isn't the headline rate — it's whether that rate is real, sustainable, and worth the potential tradeoffs. Dozens of suppliers compete in deregulated states, and they're not all equal. Some offer genuine value; others use teaser rates, hidden fees, or aggressive sales tactics that generate complaints.
This guide covers the 7 criteria that matter when evaluating suppliers, with specific examples from suppliers we've reviewed.
Who can switch — and who can't
Before evaluating suppliers, confirm you have a choice. Electricity supplier choice exists in 14 deregulated states plus Washington D.C.:
Deregulated states: Texas, Pennsylvania, Ohio, New York, New Jersey, Maryland, Massachusetts, Connecticut, Illinois, Michigan, Maine, New Hampshire, Rhode Island, and D.C.
Regulated states: California, Florida, Georgia, and roughly 36 others. If you're here, you can't switch suppliers — your utility is your only option. However, you can often review your rate plan (time-of-use, tiered, budget billing) with your utility for potential savings.
For detailed state-by-state information, see our electricity deregulation overview.
The 7 criteria for evaluating electric suppliers
1. Rate competitiveness — beyond the headline
The advertised rate isn't always the rate you'll pay. Evaluate rate competitiveness by looking beyond the headline.
Calculate the effective rate: Some plans advertise a low per-kWh rate but add monthly fees that increase your actual cost. A plan advertising $0.09/kWh with a $10/month fee costs $0.10/kWh at 1,000 kWh usage, $0.11/kWh at 500 kWh usage.
Watch for tiered pricing: Some plans charge different rates at different usage levels. A rate that's $0.08/kWh for the first 500 kWh might jump to $0.14/kWh above that threshold. Read the Plan Information Document carefully.
Beware introductory rates: Some suppliers offer very low rates for the first 1-3 months, then automatically increase. American Power & Gas, for example, often advertises eye-catching introductory rates that reset to much higher rates — a pattern that generates significant customer complaints.
Calculate annual cost, not monthly: A $0.02/kWh savings on 900 kWh/month saves $18/month — $216/year. Worth switching for? Probably. A $0.005/kWh savings saves $54/year. Maybe not worth the effort, especially if the new supplier has weaker customer service.
2. Term length and flexibility
How long are you committing, and what happens if you need to leave?
Fixed-rate terms:
- 3-6 months: Maximum flexibility, but you'll need to shop again soon.
- 12-24 months: Good balance for most homeowners and stable renters.
- 24-36 months: Rate certainty, but locks you in if market rates drop significantly.
Variable-rate plans: Variable plans adjust monthly. They can be lower during low-demand periods but can spike dramatically during extreme weather or tight supply conditions. Most consumer advocates recommend avoiding variable rates unless you actively monitor the market.
Match term to your situation: If you're renting month-to-month or might move in the next year, avoid long-term contracts with hefty early termination fees. If you're a homeowner planning to stay put, longer terms provide budget certainty.
3. Plan structure transparency
Legitimate suppliers make their pricing clear. Red flags include:
Hidden fees:
- Monthly service fees not prominently disclosed
- Fees for paper billing, payment processing, or customer service calls
- "Pass-through" charges that appear vague
Unclear rate structures:
- Multiple rate tiers without clear thresholds
- "Market-based" adjustments that give the supplier discretion to raise rates
- Vague language about when promotional rates end
Delivery charge confusion: Your bill has two main components: supply charges (what you pay the supplier) and delivery charges (what you pay the utility for grid access). Some suppliers advertise "total cost" rates that bundle both; others advertise supply-only rates. Make sure you're comparing apples to apples.
The Plan Information Document (EFL in Texas) standardizes this disclosure. Read it before enrolling, not after.
4. Customer service track record
The cheapest rate isn't worth it if you can't resolve billing disputes or the supplier is impossible to reach.
Where to check:
- Better Business Bureau (BBB): Look at complaint volume relative to company size, not just the letter grade.
- State public utility commission complaints: Many states publish complaint data.
- Trustpilot, Reddit, Consumer Affairs: Look for patterns across multiple reviews.
What patterns to watch for:
- Billing disputes that take months to resolve
- Difficulty reaching customer service
- Unauthorized enrollments ("slamming")
- Rate increases without clear notification
- Cancellation obstacles
Our rating system: We rate suppliers on a 6-dimension scale including customer service, then assign verdict tiers:
- Recommended (Green): Solid track record, competitive rates, responsive service.
- Proceed with Caution (Amber): Some concerns, but manageable if you're attentive.
- High Caution Advised (Red): Documented issues — regulatory actions, class action settlements, or persistent complaint patterns.
See our supplier reviews for specific assessments. Suppliers like Constellation Energy and Direct Energy earn Recommended status. Verde Energy carries a High Caution Advised rating due to a $7M class action settlement over billing practices.
5. Green energy claims — if relevant
If renewable energy matters to you, evaluate suppliers' green credentials carefully.
What "100% renewable" means: Most residential renewable plans use Renewable Energy Certificates (RECs). The supplier buys RECs equivalent to your usage, effectively offsetting your consumption with renewable generation somewhere on the grid. You're not getting electrons from a specific wind farm — you're supporting renewable generation financially.
Legitimate green suppliers: Inspire Clean Energy positions itself as a 100% renewable specialist with subscription pricing. Constellation Energy, backed by the largest nuclear fleet in the U.S., offers credible clean energy options.
Green claims with caveats: Verde Energy markets itself as a 100% renewable supplier, and that claim is technically accurate. However, the company's $7M class action settlement over billing practices means you're trading green positioning for regulatory baggage. Legitimate green options exist without that tradeoff.
Questions to ask:
- What type of RECs does the supplier purchase?
- Is renewable energy the default or an add-on?
- What's the premium over conventional plans?
6. Contract terms — read the fine print
The Plan Information Document matters. Key terms to check:
Early termination fees (ETFs): Fixed-rate contracts typically include ETFs ranging from $50-200 if you cancel before the term ends. Know this before signing — especially if you might move.
Auto-renewal terms: What happens when your contract expires? Most suppliers automatically roll you onto a variable rate, which can be significantly higher than your fixed rate. Some contracts require 30-60 days notice to avoid auto-renewal.
Rate change provisions: Fixed-rate plans shouldn't allow rate changes mid-contract. Variable plans can change monthly. Some plans have hybrid structures — read carefully.
Cancellation process: How easy is it to cancel? Some suppliers make this straightforward; others create obstacles. Check BBB and Reddit for cancellation experiences.
7. Sales channel — how you encountered them
How a supplier finds you can predict your experience with them.
Door-to-door and kiosk sales: Suppliers using aggressive in-person sales channels tend to generate higher complaint volumes. NRG Home uses Walmart kiosk sales; Spark Energy has an active door-to-door program; IGS Energy uses door-to-door for its solar division. All three carry "Proceed with Caution" ratings partly due to sales-related complaints.
If a salesperson approaches you, don't sign anything at the door. Take their materials, compare rates online, and sign up through official channels if you decide to proceed.
State shopping tools: Enrollment through your state's official shopping tool (PA Power Switch, Power to Choose, etc.) is the cleanest path. These tools list only licensed suppliers and provide standardized rate comparisons.
Direct enrollment: Going directly to a supplier's website avoids commissioned salespeople. You can research at your own pace and have written documentation of everything.
The Volt Butler verdict tier system
We've reviewed 12 major suppliers across the 6 dimensions above. Our verdict tiers help you quickly assess supplier quality:
| Tier | What it means | Examples |
|---|---|---|
| Recommended | Solid track record across all dimensions | Constellation Energy, Direct Energy, Public Power |
| Proceed with Caution | Some concerns, manageable with attention | NRG Home, Spark Energy, IGS Energy |
| High Caution Advised | Documented issues warrant significant concern | American Power & Gas, Verde Energy |
These tiers reflect overall risk-adjusted quality. A "Proceed with Caution" supplier might still work well for you if you're attentive to contract terms and willing to monitor your bills. A "High Caution Advised" supplier requires you to weigh documented issues against any rate advantages.
When to walk away
Sometimes the best decision is not to switch. Walk away if:
The savings aren't meaningful: $5/month in savings ($60/year) may not justify switching to a supplier you haven't researched thoroughly. If your current supplier is adequate, marginal savings may not be worth the friction.
The supplier has documented issues: Class action settlements, regulatory enforcement actions, and persistent complaint patterns are real signals. The lowest rate isn't a bargain if you spend hours disputing charges.
You encountered them through aggressive sales: If a door-to-door salesperson pressured you, that's a signal about the company's sales culture. Take time to research and compare — never sign at the door.
The contract terms are unclear: If you can't understand the rate structure or find clear answers about fees, that opacity is intentional. Legitimate suppliers want you to understand what you're buying.
FAQ
What's the most important factor when choosing an electric supplier?
The effective rate over your contract term — not the headline rate. Calculate total cost including any fees, watch for tiered pricing that penalizes your usage level, and verify the rate structure over the full term. The lowest advertised rate often isn't the lowest actual cost.
How do I avoid teaser rates that increase later?
Read the Plan Information Document carefully before enrolling. Look for language about "introductory" or "promotional" rates and what happens when they expire. If a rate seems too good compared to competitors, it probably resets to something higher. Some suppliers, like American Power & Gas, are known for this pattern.
Are smaller electric suppliers safe to switch to?
Size doesn't guarantee quality. Some smaller regional suppliers like Public Power offer excellent value. Some large national brands have significant complaint volumes. What matters is the supplier's regulatory record, customer service track record, and contract transparency — not company size.
What's the difference between a supplier and a utility?
Your utility owns the poles, wires, and meters. They deliver electricity to your home regardless of who supplies it. Your supplier generates or purchases the electricity itself. In deregulated states, you choose your supplier; the utility remains the same. Your bill typically shows charges from both: supply charges (negotiable) and delivery charges (fixed by utility).
Should I prioritize lowest rate or customer service?
This depends on your tolerance for friction. If you're comfortable monitoring bills carefully and disputing errors, you might tolerate a supplier with mixed service reviews for rate savings. If you value peace of mind and responsive support, paying slightly more for a well-reviewed supplier is reasonable. Our supplier reviews help you see this tradeoff for specific companies.