Fixed vs Variable Electricity Rates: Strategy for Deregulated Markets
Updated 30 March 2026
If you live in one of the 15 deregulated electricity states, you choose between fixed-rate plans (locked price for 12 to 36 months) and variable-rate plans (price changes monthly with the market). The right choice depends on your risk tolerance, timing, and how long you plan to stay at your current address. This guide explains the mechanics of each, the real financial risks involved, and the optimal strategy for every season.
Fixed Rate Plans: Predictability and Protection
How Fixed Rates Work
When you sign a fixed-rate electricity plan, you lock in a specific rate per kWh for the duration of your contract, typically 12, 18, 24, or 36 months. Your rate per kWh stays the same regardless of what happens in the wholesale electricity market. If a summer heat wave sends wholesale prices soaring, your rate does not change. If a mild winter brings wholesale prices down, your rate stays the same. Your monthly bill still varies because it depends on how many kWh you consume, but the rate per kWh is constant.
Advantages
- Predictable cost per kWh every month for the entire contract term
- Complete protection from wholesale market price spikes during heat waves, cold snaps, and supply disruptions
- Easier household budgeting since you know your rate will not change
- Peace of mind during extreme weather events when variable rates can spike 200% or more
- Available in terms from 6 to 36 months, letting you match the contract to your housing timeline
Disadvantages
- Typically 5 to 15% higher than variable rates during mild spring and fall months
- Early termination fee of $50 to $200 if you cancel before the contract ends
- Cannot benefit from falling wholesale market prices
- Auto-renewal rates after contract expiration are often 30 to 50% higher than the original contract rate
- Requires comparing plans and re-signing every 12 to 24 months to maintain competitive pricing
The typical fixed rate in Texas as of spring 2026 ranges from 11 to 15 cents per kWh depending on contract length and provider. In Pennsylvania, fixed rates range from 13 to 17 cents per kWh. In Ohio, 12 to 16 cents per kWh. Longer contracts (24 to 36 months) tend to have slightly higher rates because the provider takes on more risk by guaranteeing a price further into the future. The sweet spot for most consumers is a 12-month contract locked in during spring when rates are lowest.
Variable Rate Plans: Flexibility and Risk
How Variable Rates Work
Variable-rate plans adjust your rate per kWh every month (and in some cases weekly) based on wholesale electricity market prices. When demand is low during mild spring and fall weather, your rate drops. When demand surges during summer heat waves or winter cold snaps, your rate increases. There is no contract term and no early termination fee, so you can switch to a different provider or plan type at any time. Most variable plans provide a monthly rate notification showing your upcoming rate, typically 15 to 30 days in advance.
Advantages
- Can be 10 to 30% cheaper than fixed rates during mild weather months (April, May, October, November)
- No contract commitment and no early termination fee
- Freedom to switch providers or plan types at any time
- Good as a temporary option while shopping for the right fixed-rate plan
- Automatically benefit from falling wholesale market prices
Disadvantages
- Monthly bills can swing dramatically, making budgeting difficult
- Summer rates can spike 30 to 100% above spring rates due to AC demand
- Winter storms can cause extreme short-term price spikes (see Texas 2021 below)
- Requires ongoing monitoring to avoid paying above-market rates
- Providers can change terms with as little as 30 days notice
The Texas February 2021 Winter Storm: A Cautionary Tale
In February 2021, Winter Storm Uri brought record-breaking cold to Texas, dropping temperatures below zero in areas that rarely see frost. The state's power grid, operated by ERCOT (the Electric Reliability Council of Texas), was overwhelmed. Natural gas pipelines froze. Wind turbines iced over. Power plants shut down. Demand for heating electricity surged while supply collapsed.
Wholesale electricity prices, normally $30 to $50 per megawatt-hour, soared to the state-mandated cap of $9,000 per megawatt-hour. That translates to $9 per kWh, compared to the normal retail rate of about $0.12 per kWh. The spike lasted for several days as temperatures remained below freezing and the grid struggled to recover.
Customers on variable-rate plans that passed through wholesale prices received devastating bills. Some Griddy customers (a wholesale-passthrough electricity provider) reported bills of $5,000 to $17,000 for a single month. One family in Dallas reported a bill exceeding $16,000 for five days of electricity during the storm. Many customers had their homes at 55 to 60 degrees with rolling blackouts and still received bills 10x to 50x their normal amount.
Griddy, which had about 29,000 customers, eventually went bankrupt after the Texas Attorney General sued the company. The state passed legislation preventing wholesale passthrough plans from being marketed to residential customers. However, standard variable-rate plans still fluctuate with market conditions, and while the $9/kWh extreme is unlikely to repeat, variable rates during cold snaps or heat waves routinely reach 2 to 3 times the normal rate.
Lesson: If you are on a variable rate plan, switch to a fixed rate before summer or winter. The savings from variable rates during mild months rarely justify the risk of a single extreme billing event.
When Each Rate Type Makes Sense
Choose Fixed Rate When:
- You plan to stay at your current address for 12 or more months
- You value predictable monthly bills and consistent budgeting
- You are signing up in spring or fall when fixed rates are lowest
- You live in a region with extreme summer heat or winter cold
- You do not want to actively monitor electricity market prices
- Your household includes elderly family members or medical equipment that requires constant power
Choose Variable Rate When:
- You are in a temporary living situation (month-to-month lease, between homes)
- Your fixed-rate contract just expired and you need time to shop for a new plan
- It is spring or fall and you want to take advantage of low seasonal rates for a few months
- You are comfortable monitoring rates and switching to fixed before summer or winter
- You have low electricity usage (under 500 kWh per month) so the dollar risk of a spike is limited
Optimal Strategy by Season
Electricity prices follow seasonal demand patterns. The best time to lock in a fixed rate is when market prices are at their lowest, which gives providers room to offer competitive fixed rates.
Spring (Mar to May)
Lock a 12-month fixed rate
Lowest demand and lowest wholesale prices. Fixed rates offered in spring are typically 10 to 20% lower than those offered in summer. Lock now and you ride through summer at spring pricing.
Summer (Jun to Aug)
Stay on your fixed rate
Highest demand. Variable rates spike 30 to 100% above spring levels. If you locked in spring, you are saving significantly compared to the current market. Do not switch to variable.
Fall (Sep to Nov)
Renew or lock new fixed rate
Second-best time to lock in a rate. Demand drops as AC usage ends. If your spring contract is expiring, now is a good time to sign a new 12-month fixed plan.
Winter (Dec to Feb)
Avoid variable at all costs
Natural gas prices spike, pushing up wholesale electricity. Variable rates can surge 30 to 100% above normal. Cold snap risks are real and unpredictable. Stay on your fixed contract.
Early Termination Fees: What to Watch For
Most fixed-rate plans charge an early termination fee (ETF) if you cancel before the contract ends. Typical ETFs range from $50 to $200, with some plans charging $10 to $25 per remaining month on the contract. A 12-month plan with a $20 per remaining month ETF could cost $240 if you cancel after one month. Before signing a fixed-rate plan, always check:
- The ETF amount and whether it is a flat fee or calculated per remaining month
- Whether the provider allows contract transfers if you move within the same utility territory
- Whether the ETF is waived with proof of relocation out of the service area (most providers do this)
- Whether no-ETF fixed plans are available at a slightly higher rate (worth it if your housing situation is uncertain)
What Happens When Your Fixed Rate Expires
When your fixed-rate contract ends, most providers automatically switch you to a variable or month-to-month rate. This auto-renewal rate is almost always significantly higher than your contract rate, often 30 to 50% above market. Providers count on customer inertia, knowing that many customers will not notice the rate increase for several months.
Set a calendar reminder 3 to 4 weeks before your contract expiration date. This gives you time to compare new fixed-rate plans, switch providers if a better deal is available, and avoid even a single month at the inflated post-contract rate. Many state comparison tools (PowerToChoose.org in Texas, PAPowerSwitch.com in Pennsylvania) let you sort by rate and filter by contract length to find the best available deal quickly.
Pro tip: Most providers send a contract expiration notice 30 to 60 days before your plan ends. When you receive this notice, start shopping immediately. Do not wait until the expiration date. In competitive markets like Texas, you can often find a new fixed rate that is lower than your expiring rate, especially if you are shopping in spring or fall.