Can a Winter Storm Raise Your Texas Electricity Bill?
By the TexasPowerCost Editorial Team — independent Texas electricity analysis · Last reviewed October 18, 2026 · how we analyze plans
Last updated: October 3, 2026 · 8 min read
Every Texas freeze brings the same question: will my electric bill spike like the stories from February 2021? The answer depends almost entirely on one line of your Electricity Facts Label (EFL) — whether your plan is fixed, variable or indexed — and on how much electricity your heat burns through.
The short answer
On a fixed-rate plan, a storm cannot change your energy rate; it can only raise your usage. On a variable or month-to-month holdover plan, the price can be reset at the next billing cycle, and an indexed plan follows its index. The 2021-style wholesale pass-through plans are no longer allowed for Texas homes, and the wholesale cap is now $5,000/MWh.
Will a winter storm raise my electric bill if I'm on a fixed-rate plan?
Not through the rate. A fixed-rate plan locks the energy charge per kilowatt-hour (kWh) for the full term, so wholesale prices can hit the cap while your price per kWh stays exactly where it was. What a storm does raise is the number of kWh you use, and that is where almost every post-freeze bill shock comes from.
The distinction matters because the two problems have different fixes. A rate problem is solved by the plan you choose; a usage problem is solved at the thermostat, the attic and the heating system. If your fixed-rate bill doubled in a freeze week, the rate did its job and your heat did the damage — see why Texas electricity bills run high in winter for the usage side. This page is about the rate side.
What can and cannot change on your bill during a storm, by plan type?
Four plan situations cover nearly every Texas household, and they behave very differently when wholesale prices spike. The table is the summary; the sections below give the rule citations behind each row. "Next cycle" means your next billing period, which is how variable products are repriced.
| Your plan | Energy rate during the storm | Can it change next cycle? | TDU delivery charges | What drives your bill |
|---|---|---|---|---|
| Fixed rate (in term) | Locked | No — only pass-through items the EFL names | Regulated; same for every provider in your ZIP | Usage only |
| Variable (month-to-month) | This cycle's price | Yes — per the EFL's terms | Regulated; same | Usage now, price next cycle |
| Holdover (expired fixed plan) | Default month-to-month price | Yes — it is a variable product | Regulated; same | Usage now, price next cycle |
| Indexed (e.g. natural gas index) | Moves with the index | Yes — by the published formula | Regulated; same | Usage and the index |
One row is missing on purpose: the wholesale-indexed plan that passed ERCOT's real-time price straight through to households. Since September 1, 2021 it cannot be sold to residential or small commercial customers, which the Griddy section below explains.
What can my provider change mid-contract on a fixed plan?
Only pass-throughs. The PUCT rule defining a fixed-rate product, 16 TAC §25.475(b)(5), says the price may vary "solely to reflect actual changes in TDU charges," changes to ERCOT or Texas Regional Entity administrative fees, or new or modified fees imposed on the provider by federal, state or local law. Wholesale price spikes are not on that list.
Two further protections apply as of October 2026. Any change in the contract requires written notice to you at least 14 days before it takes effect (§25.475(d)(3)), and for residential customers a variable price product "can be only a month-to-month contract" (§25.475(b)(11)) — a provider cannot sign you to a 12-month term and then reprice it monthly. If a bill on a fixed plan rises during a storm, the energy line should show the same cents per kWh as the month before; what changed is the kWh multiplied by it. The plan types guide covers how each structure is written.
Can I still get a Griddy-style bill in Texas?
No, not as a household. The bills that made the February 2021 news came from wholesale-indexed plans, which passed ERCOT's real-time settlement price directly to customers while that price sat at the then-cap of $9,000 per megawatt-hour. House Bill 16 (87th Legislature) banned those products for residential and small commercial customers effective September 1, 2021.
The ban is specific. Utilities Code §39.110(b) says a retail electric provider, aggregator or broker "may not offer a wholesale indexed product to a residential or small commercial customer," and the PUCT rule (16 TAC §25.475(c)(3)(F)(ii), with the definition at (b)(12)) describes that product as one whose price "includes a direct pass-through of real-time settlement point prices." Indexed plans tied to other published indexes, such as natural gas prices, are still legal and still move with their index. The wholesale cap itself was also cut: the high system-wide offer cap fell from $9,000 to $5,000 per MWh effective January 1, 2022, and now sits in 16 TAC §25.509. For scale, a market-analysis filing in the PUCT's storm docket (Project 51617) found that ERCOT held real-time prices at the $9,000 cap from the evening of February 15 until the morning of February 19, 2021 — roughly 82 hours, including more than a day after rotating outages had ended.
Why does my bill go up in a freeze even on a fixed rate?
Because the meter spins faster. Texas homes mostly heat with electricity, and in a hard freeze a heat pump falls back on resistance strips that draw two to three times its normal power, while pure resistance heat simply runs all day. The rate stays put; the kWh do not.
The same fixed rate, three different months
At an illustrative 15.0¢/kWh energy charge (your EFL rate varies, and TDU delivery is added on top): a mild-month home using 800 kWh pays $120; a cold January at 1,200 kWh pays $180; a freeze week that pushes the month to 2,000 kWh pays $300. The price per kWh never moved. The 2,000 kWh month is also where a bill-credit plan tuned to 1,000 kWh can charge a higher effective rate than it advertises.
The practical lever is the heating system itself. Electric heating costs: heat pump vs resistance explains the fallback behavior, and the best winter thermostat settings cover why deep setbacks backfire with a heat pump. Neither changes your rate; both change the number it is multiplied by.
What if my contract expired before the storm?
Then you are on the holdover rate — the default month-to-month product your provider moved you to when the fixed term ended — and the storm can reach you through the next cycle's price. A holdover product is a variable product, so it can be repriced each billing period, and in a scarcity month that repricing can be steep.
Two facts soften this. A month-to-month product in Texas may not carry a termination fee (§25.475(b)(7)), so you can leave the day you notice. And your provider was required to send at least three written expiration notices before the term ended, so the end date was not a secret. If you are on a holdover rate today, the variable-rate guide explains the trap and the contract-ending guide walks through the switch; the short version is to lock a fixed rate at your real winter usage before the first freeze, not after.
Do TDU delivery charges change in a storm?
Not because of the storm. Transmission and distribution utility (TDU) charges — the wires company's fees — are set in PUCT rate cases, are identical for every retail provider in your ZIP, and in Texas change on a scheduled cadence, typically March 1 and September 1. A fixed-rate plan passes those scheduled changes through; it does not invent new ones.
Storm costs can reach delivery charges later, through regulatory riders approved after the fact, but that is a slow, public process rather than a line item that appears on February's bill. Because delivery charges do not vary by provider, they also never change which plan is cheapest for you. Texas TDU delivery charges, explained covers what the wires fee is made of and when it moves.
How to storm-proof your plan before the first freeze
Four checks, all done from your EFL and your last bill, remove the rate-side risk entirely. They take ten minutes and are far cheaper in October than in January.
1. Find your product type on the EFL
Every Electricity Facts Label states whether the product is fixed, variable or indexed near the top. If it says fixed, the energy rate cannot change for the storm; if it says variable or indexed, read how and when the price can move.
2. Check your contract end date
A plan that lapses in January puts you on a holdover rate in the riskiest month. If the end date falls in winter, use the 14-day no-fee window before it to lock a new fixed rate rather than letting it roll.
3. If you are already on a holdover or variable rate, lock a fixed rate now
Month-to-month products carry no termination fee, so there is no cost to leaving today. Compare plans at your real winter usage and lock the one that is cheapest at that usage, not at the advertised 1,000 kWh.
4. Read the pass-through clause and the early-termination fee
The EFL and Terms of Service list what a fixed price may still pass through (TDU charges, ERCOT fees, new taxes) and what leaving early costs. Knowing both before the storm removes the two surprises people report afterward.
Key Takeaways
- Under 16 TAC §25.475(b)(5) a fixed retail price may change only for TDU charges, ERCOT/Texas Regional Entity fees or new fees imposed by law — never for a wholesale spike — and any contract change needs 14 days written notice.
- House Bill 16 (effective September 1, 2021) bars wholesale-indexed products for residential and small commercial customers; the ERCOT high system-wide offer cap fell from $9,000 to $5,000 per MWh on January 1, 2022.
- In February 2021 real-time prices sat at the $9,000 cap for roughly 82 hours, including more than a day after rotating outages ended, according to a market analysis filed in PUCT Project 51617.
- At an illustrative 15.0¢/kWh, the same fixed plan costs $120 at 800 kWh and $300 at 2,000 kWh: in a freeze, usage is the bill driver on a fixed rate.
Lock the rate side before the freeze
A fixed-rate plan priced for your real winter usage is the only consumer-side protection against scarcity pricing. Compare every plan in your ZIP at your actual monthly kWh.
Compare Plans Free →Have the EFL in hand? Enter its three prices in the True Cost Calculator to see your winter cost.
Common Questions
Will a winter storm raise my electric bill if I have a fixed rate?
Your rate, no; your bill, probably. On a fixed-rate plan the energy price per kWh is locked for the term and cannot move because wholesale prices spiked. What moves is usage: electric heat, and especially the resistance strips a heat pump falls back on in a hard freeze, can double a week's consumption. The bill rises because you used more electricity at the same price, not because the price changed.
Can my electricity provider raise my rate during a winter storm in Texas?
On a fixed-rate contract, not for the storm itself. Under 16 TAC §25.475(b)(5) a fixed price may change only to pass through actual changes in TDU delivery charges, ERCOT or Texas Regional Entity administrative fees, or new fees imposed by law, and the provider must give 14 days written notice of a contract change. On a variable or month-to-month holdover plan the price can change at the next billing cycle under the terms of your EFL, and on an indexed plan it follows the index it is tied to.
Are wholesale-indexed electricity plans still allowed in Texas?
Not for homes and small businesses. House Bill 16, passed after the February 2021 storm and effective September 1, 2021, added Utilities Code §39.110(b), which bars retail providers, aggregators and brokers from offering a wholesale indexed product to residential or small commercial customers. The PUCT rule defines that product as one whose price includes a direct pass-through of real-time settlement point prices. Other indexed plans, tied to published indexes such as natural gas, still exist and still carry price risk.
What is the Texas electricity price cap now?
As of October 2026 the ERCOT high system-wide offer cap is $5,000 per megawatt-hour, which is $5 per kWh at the wholesale level. The PUCT lowered it from $9,000 per MWh effective January 1, 2022, after the February 2021 storm, and the figure now sits in 16 TAC §25.509. A cap limits how high wholesale prices can go in a scarcity event; it does not touch a fixed retail rate at all.
Why was my bill so high after the freeze if my rate did not change?
Because kilowatt-hours drove it. A Texas home that normally uses 30 kWh a day can use 60 to 100 kWh a day during a multi-day freeze if it heats with electricity, and a heat pump running its emergency strips draws two to three times its normal power. Add short days, extra cooking and a drafty house and a January bill can rival August. The fix is on the usage side: thermostat settings, weatherizing and knowing what your heat actually costs per hour.
What happens if my contract expired before a winter storm?
You are on your provider's default month-to-month product, often called a holdover rate, which can be repriced each billing cycle and tends to sit well above the fixed rates on offer. A storm is the worst time to be there, because scarcity pricing can flow into the next cycle's price. There is no cancellation fee on a month-to-month product in Texas, so the remedy is simple: lock a fixed rate at your real usage as soon as you notice.
Key Terms
Fixed-Rate Plan · Variable-Rate Plan · Indexed Plan · TDU Charge · Electricity Facts Label (EFL) · ERCOT · PUCT · Full Glossary →
Keep Reading
For the summer version of this question, see why your Texas bill spikes in summer. ERCOT grid alerts explained covers what the Weather Watch and EEA notices mean during a freeze, and the Texas winter electricity checklist schedules the plan check into October.