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Fixed vs Variable Electricity Rates in Texas: Which Plan Type Is Better?
Compare fixed-rate and variable-rate electricity plans in Texas. Learn when each makes sense, the risks involved, and how to pick the right plan type for your home.
Published 2026-04-06 · By ChooseMyPower Editorial
The Two Main Plan Types in Texas
When you shop for electricity in Texas, the most fundamental choice is between a fixed-rate plan and a variable-rate plan. Every other plan feature — renewable energy, free nights, tiered pricing — sits on top of one of these two structures. Understanding the difference is the first step to picking a plan that works for your home and your budget.
How Fixed-Rate Plans Work
A fixed-rate plan locks in your energy rate for a set contract term, usually 12, 24, or 36 months. During that period, the rate per kWh on your bill stays the same no matter what happens in the wholesale electricity market.
This predictability is the main advantage. If wholesale prices spike during a hot Texas summer or a winter storm, your rate does not change. You know exactly what you are paying per kWh for the life of the contract.
The trade-off is commitment. Fixed-rate plans come with a contract, and most include an early termination fee if you want to switch before the term ends. Fees typically range from $50 to $200. You also cannot take advantage of lower market prices if wholesale rates drop — you are locked in at your contract rate.
Fixed-rate plans are the most popular plan type in Texas for good reason. They provide budget stability and protection against the extreme price swings that the Texas electricity market is known for.
How Variable-Rate Plans Work
A variable-rate plan has no contract commitment. Your rate per kWh can change every month based on wholesale market conditions and your provider’s pricing decisions. You are free to switch providers at any time with no cancellation fee.
The appeal is flexibility. If you are between homes, waiting for a good fixed-rate offer, or only need service for a short period, a variable plan gets you electricity without a long-term commitment. During mild weather months (spring and fall), variable rates can sometimes dip below comparable fixed rates.
The risk is significant. Variable rates in Texas can increase dramatically during high-demand periods. Summer months when the grid is stressed can see variable rates climb well above what you would pay on a fixed plan. During extreme events, variable rates can spike to several times the normal level. There is no cap on how high a variable rate can go.
When Fixed-Rate Plans Make Sense
Fixed-rate plans are the better choice for most Texas households in most situations. They make particular sense when:
- You want predictable monthly costs for budgeting
- You are signing up for a full year or longer
- You want protection against summer price spikes
- You prefer to set your electricity plan and not think about it
The ideal time to lock in a fixed-rate plan is during lower-demand seasons (late fall through early spring) when rates tend to be more competitive. Locking in before summer can save you significantly compared to being on a variable rate during peak months.
When Variable-Rate Plans Make Sense
Variable-rate plans can be a reasonable choice in limited situations:
- You need short-term electricity service (a few weeks or months)
- You are between fixed-rate contracts and need a bridge plan
- You are willing to actively monitor rates and switch quickly if prices rise
- You are moving soon and do not want to pay an early termination fee
Variable plans should be treated as temporary solutions, not long-term strategies. Even savvy shoppers who monitor the market closely can get caught by sudden rate increases.
The Risk Factor
Texas has one of the most volatile wholesale electricity markets in the country. The ERCOT grid operates independently, and prices can swing dramatically based on weather, demand, and generation capacity. The February 2021 winter storm and extreme summer heat events have both demonstrated how quickly wholesale prices can spike.
On a fixed-rate plan, those spikes do not affect you directly. On a variable-rate plan, they hit your bill within weeks. This asymmetric risk is the strongest argument for choosing a fixed-rate plan for year-round electricity in Texas.
How to Compare Plans of Either Type
Whether you choose fixed or variable, the advertised rate does not tell the full story. Plans include TDU delivery charges, base charges, and sometimes tiered pricing that changes your effective rate depending on how much your home uses. Two fixed-rate plans with the same advertised rate can cost different amounts on your bill.
Enter your ZIP code on ChooseMyPower.org to compare both fixed-rate and variable-rate plans at your home’s actual consumption level. We calculate total monthly cost including all fees and charges, so you can see the real difference between plan types and make a confident choice.
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Frequently Asked Questions
What is a fixed-rate electricity plan?
A fixed-rate plan locks in your energy rate for the duration of your contract, typically 12 to 36 months. Your rate per kWh stays the same regardless of what happens in the wholesale electricity market. Your total bill will still vary based on how much electricity you use, but the rate itself is predictable.
What is a variable-rate electricity plan?
A variable-rate plan has a rate that can change from month to month based on wholesale market conditions and the provider's pricing decisions. There is no contract term, so you can switch at any time, but your rate is not guaranteed.
Can my bill go up on a fixed-rate plan?
Your energy rate stays the same, but your total bill can still change based on how much electricity you use. In summer months when AC runs more, your bill will be higher even on a fixed-rate plan — because you are using more electricity, not because the rate changed. TDU delivery charges are also passed through and can occasionally change.
Are variable-rate plans always more expensive?
Not always. Variable rates can sometimes be lower than fixed rates, especially during mild weather months when wholesale electricity prices are low. However, variable rates can spike dramatically during peak demand periods like Texas summers or extreme cold events, making them risky over a full year.
What happens when my fixed-rate contract expires?
When your fixed-rate contract expires, most providers automatically move you to a variable-rate or month-to-month plan, which is often more expensive. It is important to shop for a new plan before your contract end date to avoid paying higher rates.
Is there an early termination fee for fixed-rate plans?
Most fixed-rate plans include an early termination fee if you cancel before the contract ends. Fees typically range from $50 to $200 depending on the provider and plan. The fee amount is listed on the plan's Electricity Facts Label.
Which plan type is better for most Texans?
For most Texas households, a fixed-rate plan offers the best combination of predictability and protection against price spikes. Variable-rate plans can work for short-term situations or savvy shoppers who closely monitor the market, but the risk of summer price spikes makes them less suitable for year-round use.