An estimated electricity bill in Texas is not a final charge, and Texas law gives you the right to request an actual meter read before you pay. Understanding why estimates happen, how to spot one that is wrong, and what steps to take can save a household from overpaying, sometimes by a significant margin.
Why Utilities Issue Estimated Bills
An estimated bill appears when the meter could not be read during the normal billing cycle. Three situations drive most of them.
First, physical access problems. A meter reader cannot reach the meter because of a locked gate, a dog in the yard, or overgrown landscaping. This is less common than it used to be, but it still happens in older neighborhoods where smart meters have not fully replaced legacy hardware.
Second, smart meter communication failures. Most Texas homes served by the major utilities, Oncor, CenterPoint, AEP Texas, and TNMP, now have smart meters that transmit usage data automatically over a wireless network. When the signal fails, the metering data does not reach the utility, and the system generates an estimate rather than leaving the bill blank.
Third, scheduled maintenance or system outages. A temporary outage in the utility's metering data system can delay reads for an entire neighborhood on the same billing cycle.
Under PUCT Substantive Rule 25.479(e), a retail electric provider may issue a bill based on the customer's estimated usage when the transmission and distribution utility fails to obtain or transmit a meter reading on a timely basis, and the provider must inform the customer of the reason for the estimated bill. How the estimate itself is calculated is governed by the TDU's PUCT-approved Tariff for Retail Delivery Service rather than by the rule. A separate rule, Section 25.126, covers what happens afterward: if a meter is found non-compliant with the accuracy standards of Section 25.121(e), or if the TDU provided incorrect consumption or billing data, the data must be corrected and adjusted bills rendered, with back-billing that increases customer charges capped at three months absent meter tampering.
How to Tell Your Bill Is an Estimate
The clearest signal is the word "estimated" printed in the meter reading section of the bill. Your retail provider is required under Rule 25.479(e) to tell you why a bill was estimated, so that disclosure should be on the statement, though it can appear in small print.
Beyond the label, two patterns suggest an estimate may be wrong.
The number looks too round. An actual meter read produces an irregular kWh figure based on real consumption. An estimate derived from last year's usage will often land on a suspiciously even number.
The usage does not match your habits. If your household was away for two weeks, added insulation, or replaced a central air unit, last year's data is a poor proxy for this year's consumption. An estimate anchored to the old baseline will miss those changes entirely.
To check your own consumption independently, most Texas households can log into their utility's smart meter portal. Oncor, CenterPoint, AEP Texas, and TNMP customers all use SmartMeterTexas.com, built by a consortium of those utilities, which provides daily and 15-minute interval data directly from the meter. If the portal shows actual consumption that differs from the estimated kWh on the bill, that gap is the foundation of a dispute.
Actual vs. Estimated kWh: Why the Difference Matters
The financial impact depends on the direction of the error and on how your retail electricity plan is structured.
If the estimate is too high, you are prepaying for electricity you did not use. The utility will credit the difference when it reconciles with an actual read, but that credit arrives on a future bill, not immediately.
If the estimate is too low, you will owe the shortfall on the next bill, which can produce a surprise charge in a subsequent month.
The plan structure adds another layer of risk. As of September 13, 2026, 12 of the 92 plans listed on Choose My Power carry a bill-credit cliff, meaning a bill calculated at 500 kWh runs more than $25 above the bill at 1,000 kWh because of a usage-tiered credit that disappears at lower consumption. If an underestimate places your apparent usage below a credit threshold you actually crossed, you lose a credit you earned. Reconciliation should eventually restore it, but the timing can create a cash-flow problem.
The Meter Re-Read Request Process in Texas
Texas customers have a formal right to request a meter re-read. The process moves through three parties: the retail electric provider (REP), the transmission and distribution utility (TDU), and, if needed, the PUCT.
Step 1: Contact your retail provider first. Your REP is your contractual point of contact. Call or submit a written request asking for a meter re-read on the disputed bill. Keep a record of the date, the representative's name, and any confirmation number. The REP is responsible for submitting the re-read order to the TDU.
Step 2: Confirm the re-read order was placed. Ask the REP to confirm in writing that a re-read request has been submitted to the TDU and request the estimated completion date. Texas TDUs are generally required to complete a re-read within a few business days, though the specific timeframe can vary.
Step 3: Pull your own data from SmartMeterTexas.com. While the re-read is pending, download your 15-minute interval data for the billing period in question. This gives you an independent record of actual consumption before anyone visits the meter. If a smart meter communication failure caused the estimate, the portal data may already show the correct figure, and you can present it directly to the REP.
Step 4: Review the corrected bill. Once the re-read is complete, the TDU sends actual consumption data to the REP, and the REP should issue a corrected statement. Compare the corrected kWh figure to both the estimate and your SmartMeterTexas download. All three numbers should align closely.
Step 5: Escalate to the PUCT if the dispute is not resolved. If the REP refuses to initiate a re-read, issues a corrected bill you believe is still wrong, or does not respond within a reasonable time, file a complaint with the Public Utility Commission of Texas through its online complaint portal. The PUCT can compel the REP to act and can review whether the REP followed Rule 25.479 on billing and estimated bills, and Rule 25.126 if a non-compliant meter or incorrect TDU data is involved. Keeping written records from Steps 1 through 4 will make that complaint substantially stronger.
When Not to Dispute
Not every estimated bill warrants a formal dispute. If the estimated kWh is close to your actual consumption, the financial impact may be smaller than the time cost of filing a re-read request and tracking the correction across two billing cycles.
A reasonable threshold: if the estimated kWh is within five percent of what your SmartMeterTexas data shows, and your plan does not carry a bill-credit cliff, the reconciliation on the next bill will likely resolve the difference automatically without any action on your part.
Disputing makes the most sense when the estimate is materially wrong, when a usage-based credit is at stake, or when the same account has received estimated bills in consecutive months, which suggests a recurring metering problem that a single reconciliation will not fix.
A Note on Smart Meter Accuracy
A smart meter that is communicating correctly is rarely the source of a billing error. The meters themselves are subject to accuracy standards set by ANSI and tested by the utilities. When a smart meter bill looks wrong, the more likely explanation is a communication failure that triggered an estimate, not a malfunctioning meter.
If a re-read confirms that the meter's actual register matches what the smart meter portal shows, the meter is working as intended. The dispute then shifts to whether the estimate was issued and calculated correctly under Rule 25.479(e) and the TDU's Tariff for Retail Delivery Service, which is a billing process question, not a hardware question.
Understanding that distinction helps a household ask the right questions and reach a resolution faster.