Fixed vs Variable Texas Electricity Plans: Which Structure Fits?
Estimated costs are informational. Provider rates and plan terms may change. Confirm current details directly with the provider.
When you shop for electricity in Texas, every plan falls into one of two categories: fixed-rate or variable-rate. The difference is straightforward, but the implications for your bill and your risk exposure are significant.
Fixed-rate plans
A fixed-rate plan locks in your energy supply rate for the full contract term, typically 6, 12, 24, or 36 months. Your per-kWh energy charge does not change regardless of market conditions.
- Predictable monthly bills
- Protection against wholesale price spikes
- Easy to budget long-term
- Most popular plan type in Texas
- Early termination fee (typically $10–$20/remaining month)
- Locked in if market prices fall below your rate
- May require a longer commitment
Variable-rate plans
A variable-rate plan (also called a month-to-month plan) has an energy rate that can change every billing cycle, typically tracking wholesale electricity market prices. You usually have no long-term commitment and no early termination fee.
- No early termination fee
- Flexibility to switch anytime
- Can be cheaper during low-demand seasons
- Bills can spike dramatically during extreme weather
- No price certainty
- Requires active monitoring
- Historically, ERCOT stress periods have produced significant volatility
During Winter Storm Uri in February 2021, some Texas households on variable-rate plans received electricity bills of $5,000–$17,000 for a single month. Variable-rate plans expose you to wholesale market prices, which can spike to $9/kWh (vs. a typical 9–12 cents/kWh on fixed plans) during extreme demand events. Past events do not predict future prices, but they illustrate volatility risk.
How free nights/weekends plans fit in
Time-of-use plans (such as free nights or free weekends) can fit some households, but only when a meaningful share of usage can be shifted to off-peak periods. If most usage stays during peak windows, estimated monthly cost may be higher than a straightforward fixed-rate plan.
Index plans: a third option
Some providers offer index-rate plans where the price tracks a specific market index (like ERCOT's real-time price) with a fixed markup. These can be cheaper during normal conditions but carry the same weather-event risk as variable plans. They appeal to customers who want market exposure with slightly more structure.
Which type is right for you?
Fixed-rate, 12–24 months. Lock in a competitive rate and get price certainty.
Fixed-rate with a contract that matches your lease, or month-to-month with active monitoring. Check the ETF before committing to a long term.
Variable-rate, but keep a fixed-rate plan bookmarked to switch to quickly if wholesale prices start rising.
Fixed-rate, 12 months. Renew or switch when the term ends.
Does TrueBill show both plan types?
Yes. TrueBill shows all available plan types: fixed, variable, and index. Plans are labeled with their contract type. Fixed-rate plans show the locked-in term length and ETF. Month-to-month plans are labeled accordingly.
Plan pricing and terms may change. Confirm current EFL details and enrollment terms directly with the provider before final selection.
Continue Comparing Smarter
Compare plans by estimated cost at your usage, then verify final pricing terms directly with the provider before enrolling.