If you are shopping for electricity in Texas, you have probably seen two main options: fixed-rate and variable-rate plans. Both have pros and cons, and which one saves you the most money depends entirely on your goals and how you use electricity.
In this guide, we break down exactly how each plan works, show you real examples, and help you decide which is right for your home.
What is the difference?
Fixed-rate plans
With a fixed-rate plan, your electricity rate is locked in for the entire contract term, usually 6, 12, 24, or 36 months. No matter what happens to the energy market, your rate stays the same.
Example: You sign up for a 12-month fixed plan at 12¢ per kWh. In month 6, market rates jump to 18¢ per kWh. Your rate? Still 12¢.
Variable-rate plans
With a variable-rate plan, your electricity rate changes monthly based on market conditions. When wholesale prices go down, your rate goes down. When prices go up, so does your rate.
Example: You sign up for a variable plan at 11¢ per kWh in January. By June, market rates drop to 9¢ per kWh, and your rate follows. By November, rates jump to 14¢ per kWh, and your rate increases too.
Side-by-side comparison
| Feature | Fixed-Rate | Variable-Rate |
|---|---|---|
| Price stability | Locked in for contract term | Changes monthly |
| Budgeting | Easy — same rate every month* | Harder — bill fluctuates |
| Market upside | Limited — rate stays the same | High — you benefit from low rates |
| Market downside | Protected — locked-in rate | Exposed — rates can spike |
| Early termination fee | Usually $150 to $300 | Usually none |
| Best for | Risk-averse budgeters | Flexible users willing to take market risk |
* Base charges and usage still apply. Your total bill = (kWh used × rate) + base charge.
Cost comparison: real examples
Scenario 1: market rates stay stable
Your usage: 1,000 kWh/month · Contract length: 12 months
- Fixed plan: 12¢/kWh locked in for 12 months = $120/month × 12 = $1,440/year
- Variable plan: Average 12¢/kWh over the year = $120/month × 12 = $1,440/year
Winner: Tie. Both cost the same.
Scenario 2: market rates rise (volatility)
Your usage: 1,000 kWh/month · Contract length: 12 months
- Fixed plan: 12¢/kWh locked in = $120/month × 12 = $1,440/year
- Variable plan: Starts at 11¢, rises to average 14¢ by end of year = ~$130/month average × 12 = $1,560/year
Winner: Fixed-rate plan saves about $120/year.
Scenario 3: market rates fall (favorable market)
Your usage: 1,000 kWh/month · Contract length: 12 months
- Fixed plan: 12¢/kWh locked in = $120/month × 12 = $1,440/year
- Variable plan: Starts at 12¢, drops to average 9¢ by mid-year = ~$105/month average × 12 = $1,260/year
Winner: Variable-rate plan saves about $180/year.
Key insight
Fixed-rate plans protect you when markets are rising. Variable-rate plans reward you when markets are falling, but expose you to spikes. Neither is inherently better. It depends on market conditions and your risk tolerance.
Which plan should you choose?
Choose a fixed-rate plan if:
- You want budget predictability and peace of mind
- You are risk-averse and do not want rate surprises
- You are planning to stay in your home for 2 or more years
- Market conditions are uncertain or volatile
- You have a tight monthly budget and cannot absorb bill spikes
Choose a variable-rate plan if:
- You are comfortable with rate fluctuations
- You want flexibility to switch providers (usually no early-termination fee)
- You expect market rates to fall or stay low
- You are willing to take market risk for potential savings
- You only plan to stay in your home short-term (6 to 12 months)
Pro tips for Texas shoppers
1. Always check the Electricity Facts Label (EFL)
The EFL shows the average price at 500, 1,000, and 2,000 kWh usage levels. Use this to compare plans fairly, not just the headline rate.
2. Factor in your usage pattern
A plan that is great for a 1,000 kWh/month user might be expensive for a 2,000 kWh/month user. Your EFL usage tier matters.
3. Watch for base charges and fees
Some plans charge a monthly base fee ($10 to $20) that applies even if you use no electricity. This is part of your true cost, so check the EFL.
4. Check contract terms and early-termination fees
Fixed plans often have $150 to $300 early-termination fees. If you might move, a variable plan with no fee might be smarter.
5. Do not switch too often
Constantly switching for a slightly lower rate wastes time and can be penny-wise, pound-foolish. Stick with a plan for at least 6 months.
Bottom line
Fixed-rate plans are best for budget certainty and protection against market spikes. Variable-rate plans offer flexibility and upside potential when rates fall, but with market risk.
There is no one-size-fits-all answer. Look at your risk tolerance, budget, and how long you plan to stay in your home. Then compare the Electricity Facts Label for actual pricing at your usage level.
Questions? Call or text us at (361) 582-9724. As your local Ambit Energy consultant, we are here to help you understand your options and find the plan that works best for you.
Common questions
Is a fixed-rate or variable-rate plan cheaper in Texas?
Neither is always cheaper. Fixed-rate plans save you money when market rates rise because your price is locked in. Variable-rate plans save you money when rates fall, but they expose you to spikes. The right choice depends on market conditions and your risk tolerance.
Do variable-rate plans have an early-termination fee?
Usually not. Most variable-rate plans let you leave at any time with no early-termination fee, which is part of why they appeal to people who may move soon. Fixed-rate plans typically charge $150 to $300 to cancel early.
What is the Electricity Facts Label (EFL) and why does it matter?
The EFL is a standardized disclosure that shows a plan's average price at 500, 1,000, and 2,000 kWh of usage, plus base charges and fees. Comparing the EFL at your actual usage level is the only fair way to compare plans, since the headline rate alone can be misleading.
How long should I stay on a plan before switching?
Plan to stay at least 6 months. Constantly switching for a slightly lower rate wastes time and can trigger fees or hidden costs. Pick a plan that fits your budget and usage, then let it run.