Where should you start when your electric bill is high?
Start by finding out whether daily electricity use or the effective price per kilowatt-hour changed. Do not begin with the thermostat, the meter, or a new plan. Two bills and four numbers can narrow the cause before you spend money or call anyone.
Use the same month last year when you can. It is usually a better comparison than the previous month because Texas electricity use is seasonal. If last year's bill is not available, use a recent period with similar weather and occupancy.
The four-number check
One current bill and one useful comparison bill are enough to start
- 1
Current-period charges
Separate this month's electricity charges from a past-due balance, deposit, late fee, or payment adjustment.
- 2
Billing-period days
A 33-day bill will usually be higher than a 28-day bill even if the home uses the same amount each day.
- 3
Average kWh per day
Divide billed kWh by billed days, then compare with the same season or a recent period with similar weather.
- 4
Effective price per kWh
Divide current-period charges by kWh. If this moved, inspect the plan formula and every line on the bill.
On each bill, find the dates, total kilowatt-hours (kWh), and current-period electricity charges. A kWh is the unit the meter uses to record consumption. Then calculate:
- Average daily usage: billed kWh ÷ days in the billing period.
- Effective price: current-period charges ÷ billed kWh. Multiply dollars by 100 to express the result in cents per kWh.
Use the same charge subtotal on both bills. If the format does not provide a clean electricity subtotal, use the current-period total as a first pass, then inspect taxes and non-recurring items separately. Do not use the full amount due if it includes an older balance, a deposit, or a payment adjustment.
The increase is mostly usage
Compare weather and look for a new or longer-running load.
The increase is mostly price or charges
Check the contract, EFL, credits, delivery rates, and line items.
Both sides moved
Quantify each change before deciding which fix matters most.
Look outside current usage and rate
Check the bill for a prior balance, fee, deposit, or adjustment.
This method matters because dollars alone blur several causes together. A longer billing cycle can raise total kWh even when the home behaves exactly the same each day. A fixed monthly charge can raise the effective price in a low-usage month. A missed bill credit can raise the price at the same time hotter weather raises usage.
What does a real bill comparison look like?
A useful comparison separates the increase instead of trying to explain the whole bill with one story. In this illustrative example, the bill rose by $118 because both usage and effective price increased.
A $118 increase, split
Illustrative current bill vs. the same month last year
| Bill detail | Last year | This year | Change |
|---|---|---|---|
| Current-period charges | $126 | $244 | +$118 |
| Electricity used | 840 kWh | 1,180 kWh | +40% |
| Billing-period days | 30 | 33 | +3 days |
| Average daily usage | 28.0 kWh | 35.8 kWh | +28% |
| Effective price | 15.0¢/kWh | 20.7¢/kWh | +38% |
Current-period charges
- Last year
- $126
- This year
- $244
- Change
- +$118
Electricity used
- Last year
- 840 kWh
- This year
- 1,180 kWh
- Change
- +40%
Billing-period days
- Last year
- 30
- This year
- 33
- Change
- +3 days
Average daily usage
- Last year
- 28.0 kWh
- This year
- 35.8 kWh
- Change
- +28%
Effective price
- Last year
- 15.0¢/kWh
- This year
- 20.7¢/kWh
- Change
- +38%
About $51 came from more kWh
At last year's 15.0¢ effective price, 1,180 kWh would cost about $177 instead of $126.
About $67 came from price or other charges
The rest is the gap between the $177 usage-only estimate and the actual $244 current-period charge.
The total kWh rose 40%, but the home's average daily use rose 28%. The three extra billing days explain part of the difference. The effective price also rose from 15.0¢ to 20.7¢ per kWh, so higher usage is not the whole answer.
The next step is now specific. The household should inspect why daily use rose and why the effective price rose. On the usage side, it can compare weather and interval data. On the price side, it can check the contract status, plan formula, credits, delivery charges, and other bill lines.
The split is an estimate, not an audit. Effective price bundles several items together, and some charges do not scale with kWh. Its purpose is to show whether one side moved enough to matter. The actual line-item explanation comes from the bill and the plan documents.
Why did your electricity usage increase?
Electricity use rises when equipment runs longer, draws more power, or is newly added. In Texas, the first comparison is usually weather: cooling dominates many summer changes, while electric heating can create sharp winter changes. The bill records the result in kWh even when the price per kWh stays fixed.
Was the weather meaningfully different?
Compare weather across the meter dates, not calendar months or bill due dates. A bill received in August may include much of July. Several very hot days near the beginning or end of a billing period can land on a different bill than you expect.
Air conditioners do not consume a fixed amount each day. They run longer as the outdoor temperature, humidity, solar heat, and heat entering the home increase. Thermostat settings matter, but so do shade, attic insulation, air leaks, duct condition, equipment efficiency, and how much heat people and appliances add indoors.
Winter can be just as revealing in an all-electric home. A heat pump may use electric-resistance auxiliary heat during cold conditions or when controls call for a large temperature recovery. Resistance heat uses substantially more electricity than moving heat with the heat pump alone, so a short cold spell can produce a conspicuous interval-data pattern.
Did something about the household change?
Look for changes that added hours or equipment, even if none seemed dramatic on its own:
- More people at home, guests, school breaks, or remote work.
- A lower summer thermostat setting or higher winter setting.
- A pool pump running longer or on a new schedule.
- A new EV, portable heater, dehumidifier, freezer, hot tub, aquarium, or workshop tool.
- More hot-water use, especially with an electric water heater.
- Solar production falling because of weather, shading, an inverter issue, or system downtime, causing the home to import more from the grid.
Do not assume a new device is the cause merely because its arrival and the bill increase happened near each other. Check whether its plausible operating hours line up with the change in daily or interval usage.
Is the comparison itself fair?
A raw month-to-month comparison can mislead. Normalize for billing days, then consider season, weather, occupancy, and major equipment. For solar homes, compare grid imports rather than only whole-home consumption: lower solar production can raise billed imports even when the household uses the same amount.
Estimated reads can still appear in some situations. Check whether the bill identifies the reading as actual or estimated. A later true-up can move usage between billing periods without changing the total energy the home used across both periods.
Why did your price per kWh increase?
The effective price rises when the plan formula, contract status, regulated delivery charges, or other bill items change. It can also move without any rate change because fixed charges and conditional credits behave differently at different usage levels.
Did the contract end or the plan change?
Find the contract end date and compare the current bill with the plan's Electricity Facts Label (EFL) and terms of service. If the fixed term ended, the account may have moved to renewal terms or a month-to-month holdover product with a different price. The bill should identify the product and rate being charged.
If the contract is still active, match these bill lines to the EFL:
- The provider's energy charge and any monthly base charge.
- The local utility's fixed and per-kWh delivery charges.
- The rules and amount for any bill credit.
- Any time-of-use, EV, solar, battery, or other program adjustment.
- Non-recurring fees, service charges, or account adjustments.
The EFL guide shows where each part of the formula lives. Use the version for the exact plan and utility area, not a similarly named offer available today.
Did a credit disappear or a threshold change the result?
A bill credit can make the effective price jump even if usage changes by only a few kWh. Suppose a plan gives a $100 credit at 1,000 kWh. A 999 kWh month may cost roughly $100 more than a 1,000 kWh month before other differences, even though it used less electricity.
Check both the minimum and maximum qualifying usage, then calculate the charge formula on each side of the cutoff. The average prices at 500, 1,000, and 2,000 kWh do not show every point between them. See the bill-credit and free-nights math for a full worked example.
Can a fixed-rate plan still change?
Yes, but the reason matters. A fixed-rate product fixes the price components identified by the contract for its term; it does not fix the total bill or the home's kWh. Texas rules also allow actual changes in regulated transmission and distribution utility charges and certain changes required by law to be reflected during a fixed term.
Texas utility delivery rates are commonly updated on March 1 and September 1 and can change at other times with regulatory approval. The same utility rates apply regardless of retail provider. Check the current rates and how they reach the bill.
A fixed monthly charge can also make the effective price per kWh change even when every rate is unchanged. Spread a $10 charge across 500 kWh and it adds 2¢ per kWh; spread it across 1,000 kWh and it adds 1¢. That is arithmetic, not a rate change.
Is the high number actually this month's electricity cost?
Read the amount due separately from current-period charges. A prior balance, late fee, deposit installment, returned-payment fee, reconnect charge, or other adjustment can make the amount due much higher without changing usage or the electricity price.
Also check whether a discount or credit changed: autopay, paperless billing, solar export, demand-response participation, a device program, or an account-level courtesy credit. The bill should show enough detail to identify the line; the plan or program terms explain why it applied.
How can smart-meter data help find the cause?
Smart-meter data shows when the home imported electricity. It can reveal whether the increase followed hot afternoons, appeared as a new overnight baseline, or repeated on a schedule. It does not identify the appliance by itself.
Many Texas customers can view daily and 15-minute usage through their provider or Smart Meter Texas. The data is not necessarily live, so use it to investigate completed days and billing periods rather than to judge what switched on a few seconds ago.
Start broad, then zoom in:
- Compare whole billing periods. Confirm that the meter-data total is reasonably consistent with billed kWh for the same dates, allowing for timing, revisions, and how the portal displays intervals.
- Compare daily totals. Find the day the higher pattern began. Match it to weather, guests, travel, equipment work, pool schedules, EV charging, or a solar interruption.
- Compare similar days. A mild Tuesday and a hot Saturday change too many variables. Compare weekdays with similar temperatures and household routines.
- Inspect 15-minute intervals. Look for a sustained hill, a higher baseline, a repeating block, or an isolated event.
- Confirm the clue. Check the equipment schedule, thermostat history, solar app, or a technician's measurement before assigning the cause.
Four patterns worth investigating
Illustrative 24-hour profiles, not appliance identification
A weather-shaped hill
Usage rises through the hot afternoon and eases overnight. Cooling is the first place to investigate.
A higher round-the-clock floor
Every hour is elevated. Look for an always-on load such as a pump, extra refrigerator, or water-heating problem.
A repeating block
The same hours jump each day. Check scheduled equipment such as a pool pump, EV charger, or electric heater.
One isolated spike
A party, project, freeze, or unusually hot day may explain one event. It cannot explain a high month by itself unless it was large or repeated.
A whole-home meter cannot cleanly separate two devices that run at the same time. A circuit-level monitor or qualified technician can isolate a load when the interval pattern is not enough. Do not open a meter, electrical panel, or energized equipment to investigate a bill.
Which problems inside a home can raise the bill?
An equipment problem becomes more likely when daily kWh stays elevated under similar weather and routines, or when the higher pattern begins suddenly and persists. The most useful clues are longer runtime, a new round-the-clock load, loss of comfort, or equipment behaving differently.
Check the largest loads first:
- Cooling or heat-pump system: unusually long runtime, weak airflow, rooms no longer reaching the set temperature, ice, water around the indoor unit, or an outdoor unit that sounds different. A dirty filter is safe to check; refrigerant, electrical, and duct problems belong with a qualified technician.
- Electric resistance or auxiliary heat: a thermostat showing “aux” or “emergency heat” for long periods, or a winter interval profile that stays sharply elevated. Have the heat-pump controls and equipment checked if auxiliary operation seems excessive.
- Electric water heater: a hot-water leak, dripping temperature-and-pressure relief line, failed control, or resistance element running far more than usual. A plumbing leak can consume both water and the electricity needed to reheat it.
- Pool, spa, or well pump: a timer reset, longer filtration schedule, freeze-protection cycle, leak, or motor problem. Repeating blocks in interval data often make scheduled equipment easier to spot.
- Refrigerator or freezer: a damaged door gasket, obstructed airflow, hot garage, heavy frost, or a unit that rarely cycles off. A second appliance in a garage can matter more in summer than it did in spring.
- New high-power load: EV charging, a portable space heater, dehumidifier, hot tub, server, kiln, welder, or construction equipment. Confirm its schedule and energy record where the device provides one.
Small plug loads are real, but they rarely deserve first place in a sudden, large-bill investigation. Start with heating, cooling, water heating, pumps, and newly added high-power equipment. The separate guide on lowering a bill will cover which efficiency changes are worth making; diagnosis comes first here.
If you smell burning, see heat damage, hear arcing, or find water near electrical equipment, stop the investigation and contact the appropriate emergency service or qualified professional. A lower bill is secondary to safety.
Could the bill or meter be wrong?
Meter or transmitted-reading errors can happen, but they are uncommon. A high bill is much more often explained by billing dates, usage, plan terms, credits, delivery charges, or a prior balance.
If those checks do not explain the increase, contact the retail provider named on the bill and ask it to walk through the usage and charges with you. Before calling, verify the service address, ESI ID (the identifier for the electric service point), billing dates, billed kWh, and whether the reading is actual or estimated. If the bill does not match the daily or interval data for the same dates, ask the provider to investigate and explain the process and possible fee for a meter test. Do not open, unseal, or attempt to test the utility's meter yourself.
High electric bill FAQ
Why did my bill double if I have a fixed rate?
A fixed-rate plan does not fix the total bill. Your kWh can increase, a bill credit can disappear, the billing period can be longer, and permitted utility delivery-charge changes can pass through. Also confirm that the fixed term has not expired and that the amount due does not include a past balance or one-time charge.
How can I tell how much electricity my AC is using?
A standard smart meter measures the whole home, not the AC separately. Compare 15-minute usage on similar days, then look for a sustained afternoon pattern that follows outdoor heat and changes when the system runs differently. An HVAC technician or circuit-level energy monitor can isolate the equipment more precisely.
Why is my electric bill high when nobody is home?
An empty home can still run cooling or heating, an electric water heater, a pool or well pump, refrigerators, dehumidifiers, security equipment, and other always-on loads. Smart-meter data can show whether usage stayed high all day or followed a schedule while the home was empty.
Why is my neighbor's electric bill lower than mine?
Two nearby homes can differ in size, insulation, shade, thermostat settings, equipment efficiency, number of occupants, pool or EV loads, plan formula, and billing-period length. Compare kWh per day before comparing dollars; the bill total alone cannot tell you which home or plan is more efficient.
Can a smart meter be wrong?
A smart meter or transmitted reading can be wrong, but it is uncommon. First verify the service address, ESI ID, billed dates, and interval data. If a mismatch remains, ask the provider to investigate it and explain the process and possible fee for a meter test before authorizing one.
Who should I call about a high electric bill?
Call the retail electricity provider named on the bill for rate, credit, balance, billing-period, or usage questions. Call a qualified HVAC technician, plumber, or electrician when the data points to equipment. The local utility handles outages and the meter, but the provider is the practical first contact for a disputed retail bill and can coordinate a meter issue.
Sources and related reading
The Public Utility Commission of Texas's customer disclosure rule defines fixed-rate products and the permitted categories of price change. The PUCT's advanced-metering rule requires customer access to day-after 15-minute interval data. The U.S. Department of Energy's guides explain home cooling and common AC problems and why heat-pump controls should avoid unnecessary electric-resistance heating.
Reviewed August 1, 2026. This guide provides general educational information, not legal advice. Rules and plan terms can change; confirm current PUCT materials and your plan documents for your situation.
Continue with how to read an Electricity Facts Label, bill-credit and free-nights plans, TDU delivery charges explained, or how the deregulated Texas electricity market works.