7 Texas Electricity Plan Traps That Spike September Bills

Texas allows an electricity company to charge a customer up to $250 just to walk away from a contract early.

Many electricity contracts signed on a standard 12-month term the previous year expire on their own this month.

These are electricity plan traps that can spike a Texan’s September bill.

Note: This is general information, not financial or legal advice. Electricity plan rates, fees and terms are subject to change, so confirm the current details with the Public Utility Commission of Texas.

1. Usage-Tier Bill-Credit Cliffs

Texas electricity plans built around a bill credit dangle a low advertised rate, sometimes 7 or 8 cents a kilowatt-hour, but only pay it out once monthly usage clears a set line, commonly 1,000 kWh.

Fall one kilowatt-hour short of that line, and the whole credit disappears.

Gone.

An analysis of active Texas retail electricity plans found a bill-credit plan where a customer using 999 kWh pays about $129 more than a customer who used 1,000 kWh, one kilowatt-hour more, that same month.

September is when this cliff catches households by surprise because usage is exactly what’s supposed to fall this month, as the worst heat lets up and the air conditioner finally gets a break.

A household that cleared 1,000 kWh all summer can slide under that line in September without changing a single habit.

You use less power and pay more for it.

2. Free-Nights Math Traps

Texas retail providers market free-nights and free-weekends plans as a way to dodge high rates entirely, and the pitch is simple: Run the dishwasher and the laundry after 9 p.m. and pay nothing for it.

The daytime rate is where the plan makes its money back.

Free-nights plans often charge daytime rates of 18–22 cents a kWh, against roughly 13 cents a kWh on a standard fixed-rate plan.

The “free” hours aren’t free of everything: A Texas transmission and distribution utility, or TDU, still collects its delivery charge on every kilowatt-hour, even the free ones.

That delivery charge just reset higher for the year on September 1.

A household needs to shift the bulk of its usage into the free window just to come out ahead.

A household with the air conditioner running through a Texas September afternoon, which describes many homes across the state, rarely clears that bar.

Rarely worth it.

That’s the trade a “free” plan makes a customer accept: Cheap power at 2 a.m., and an already-higher September delivery charge tacked onto every expensive daytime kWh.

3. Variable Rate Exposure

Texas indexed and variable-rate electricity plans float with the wholesale market price that the grid operator, the Electric Reliability Council of Texas (ERCOT), sets in real time.

There’s no ceiling.

When ERCOT calls a tight day, the wholesale price can jump from a few cents a kWh to well over a dollar within an hour, and a variable-rate customer’s bill follows it in real time.

September isn’t automatically safe from that either: ERCOT set a new September demand record of 84,182 megawatts on September 8, 2023, breaking a record the grid had set the day before, which had itself topped a September mark that had stood since 2021.

Fixed-rate customers don’t feel any of that.

Variable-rate customers feel every bit of it in their next bill.

4. Auto-Renewal’s Holdover Rate

Texas contracts run 12 or 24 months, and a household that signed up last September, or two Septembers back on a 24-month term, hits its expiration date this month.

PUCT rule requires the provider to send at least three written notices during the final third of the contract, with the last one due at least 30 days before it ends, but many Texans never open any of those envelopes.

Miss it, and the contract doesn’t just end.

It rolls.

State rule requires the provider to move that account onto its own month-to-month “default” rate, a variable price the provider can reset every billing cycle with no cap on how high it goes.

Nobody picks a holdover rate on purpose.

They just forget to pick anything else.

5. Early Termination Fees

A Texas electricity contract locks in a rate for its full term, and breaking it early costs an early termination fee (ETF), typically $100 to $250 depending on the provider, with PUCT rule capping it at $20 or 10% of what’s left on the contract, whichever is higher.

A September bill often shows a customer just how bad a summer plan was, and the instinct is to cancel that same day.

That’s usually the wrong move.

That instinct adds the ETF straight onto an already-inflated bill, exactly the stacking a frustrated shopper is trying to escape.

Texas rule lets a customer switch providers within the final 14 days of a contract’s term with no early termination fee at all, so waiting out those last two weeks on a bad plan keeps every option open and skips the fee.

Patience beats paying the fee on top of the bill that caused it.

6. Minimum-Usage Fees

Texas plans that reward high usage often penalize low usage too, charging a flat minimum-usage fee, commonly $10 to $25, whenever monthly usage drops under a set line, often 500 kWh.

It isn’t prorated.

Use even one kWh under the line, and the fee hits the same as if usage had been zero.

September is when usage starts falling across Texas, as afternoons cool off and the air conditioner finally gets to rest, which is exactly when a household can cross under that 500 kWh floor without meaning to.

A single kWh under the line costs exactly what zero would.

7. Prepaid Balance Drains

Texas prepaid electricity plans skip the credit check and the deposit, and a customer pays for power before using it instead of after.

The rate for that convenience runs 14–18 cents a kWh, well above the roughly 13 cents a kWh a typical Texas household pays on a fixed-rate plan.

A prepaid balance doesn’t stretch as far in September as it did in August, even when daily usage stays exactly the same.

Every prepaid rate bakes in the same TDU delivery charge that resets higher on September 1, so each kWh draws the balance down a little faster the moment the calendar turns.

Providers send low-balance warnings, typically at $10, then $5, then $0, but a balance can still hit zero before a customer notices the faster drain.

Then it goes dark.

Power stays off until the customer adds more money to the balance.