How to Read a Smart Meter: A Practical Guide

Reading a smart meter helps you understand energy use and check the figure shown on a bill or account. You may also need a manual reading if your utility requests one or the meter is not sending readings automatically. Smart meters differ by manufacturer and utility, so use the display labels and your utility’s guidance rather than assuming every model works the same way. You do not need to open the meter or touch its wiring.

What You’ll Need

Access to the display: The meter may be indoors, in a utility cupboard, basement, garage, or outside. Only approach it if you can do so safely.
Paper or a phone: Note the full reading, the unit shown, and the date and time.
Your utility account instructions: These can tell you which register to submit and whether to include digits after a decimal point.
A flashlight, if needed: Use it to see the display without removing covers or moving equipment.

Step-by-Step

Identify the meter. Check whether you are looking at an electricity meter or a gas meter. The meter or its label may name the service, and your account or utility’s website can help confirm it. If a property has multiple meters, do not assume the nearest one is yours; check its meter number against the account or ask the utility.
Look at the meter from a safe position. Read the display without opening the case, touching wires, or interfering with seals. If the meter is wet, damaged, unusually hot, sparking, or has a strong gas odor nearby, step away and contact the utility or appropriate emergency service. Do not attempt a repair.
Wake or cycle the display. Some displays are always on; others go dark to save power. A button may wake the screen or move through screens. If there is a button, press it gently and observe the result. Do not hold it down or press several buttons at once unless the meter instructions say to.
Find the consumption reading. Look for a label such as kWh for electricity, or a gas unit such as cubic feet (ft³), hundreds of cubic feet (CCF), or cubic meters (m³). The screen may cycle through several values, including a meter identifier, current demand, time, or separate registers. Record the screen that represents accumulated energy use—not a live-use figure or an identification number.
Check for multiple registers. Some electricity meters show separate totals for different rate periods, often labelled in a way such as Rate 1 and Rate 2. A meter may also display separate import and export readings if electricity flows both to and from the grid. Record only the register or registers your utility asks for, and keep their labels with the numbers.
Write down every relevant digit. Note the entire displayed value, including leading zeros if your utility’s form expects them. If the display includes a decimal point, check whether the utility wants the decimal digits. Do not round a reading unless the submission instructions explicitly tell you to; a small difference in entry format can cause a mismatch.
Record the unit and time. Write whether the number is in kWh, ft³, CCF, m³, or another unit shown on the meter. Add the date and time so you can distinguish this reading from an earlier one. A number without its unit or register label can be misleading.
Submit it only if needed. If your utility requests a manual reading, enter the value in the correct account field or use its approved phone or online process. Check the meter number and register before submitting. If your meter normally communicates automatically, there is usually no need to send routine readings unless the utility asks.
Compare readings carefully. To estimate use between two readings, subtract the earlier reading from the later reading for the same register and unit. This gives the amount recorded over that period, not necessarily the exact amount billed if the utility uses estimated dates, conversions, or other billing adjustments.

Common Mistakes

Reading the wrong screen: A meter identifier, instantaneous demand, or clock is not the cumulative consumption register. Wait for the appropriate label or consult the meter guide.
Mixing up gas and electricity units: Electricity is commonly shown in kWh, while gas meters may use volume units. Utilities can convert gas volume to energy for billing, so do not compare a meter’s volume figure directly with an energy figure on a bill.
Using the wrong register: If there are multiple rates or import/export totals, copying one number without its label can omit part of the account’s usage.
Rounding or dropping digits: Enter the reading exactly as requested. Do not remove digits simply because they seem small or because a previous bill displayed fewer.
Assuming the meter is faulty because the number rises: A cumulative register normally increases as energy is used. A brief display can also show information unrelated to consumption.
Confusing the meter with the in-home display: A separate monitor may estimate or summarize use. If you need an official meter reading, use the meter’s own register unless your utility says otherwise.

Tips

Take a clear photo of the display if your utility accepts photos or if you want a record. Make sure the digits, unit, and register label are visible.
For a comparison, take readings at roughly the same time of day and use the same register. Keep notes so you do not compare different units or rate periods.
Use the meter make and model, often printed on its label, to find the correct display instructions. Your utility may also provide a model-specific guide.
Do not use a reading from a separate monitor as an exact substitute unless the utility confirms it is suitable for the task.
If the meter is behind a locked door or in a restricted area, ask the property manager or utility for access rather than forcing entry.

Troubleshooting

The screen is blank: It may be asleep. Try a gentle press of the display button if one is provided, then wait for it to wake. If it remains blank, avoid opening the enclosure; contact your utility and report the meter number if you can read it safely.

The number or labels keep changing: The display may be cycling through registers. Wait through the sequence, note each relevant label, and repeat if needed. The order and button operation depend on the model.

You cannot tell which value to submit: Photograph the display sequence and check the utility’s instructions for your meter type. Ask the utility which register and digits it requires rather than guessing.

The reading looks unusually high or low: First check that you have the correct meter, unit, register, and date. Compare two readings from the same register, not the meter number or a live-use screen. If the figures still do not make sense, contact the utility to check the meter and account details.

The meter shows an error or warning: Note the exact message or code and contact the utility. Do not reset, disconnect, or tamper with the meter unless the utility gives specific safe instructions.

Your submitted reading is rejected: Check for a transposed digit, omitted decimal, incorrect unit, or wrong register. Confirm the meter number and follow the utility’s accepted format. If the entry is correct, ask the utility whether it needs a different register or a meter visit.

Frequently Asked Questions

Do I need to read a smart meter regularly?

Usually, smart meters send readings to the utility automatically, but communication can be interrupted or a utility may request a manual reading. Check your account instructions; do not assume automatic reporting is working simply because the meter is smart.

What does kWh mean on an electricity meter?

A kilowatt-hour (kWh) is a unit of energy. The cumulative kWh register records electricity used over time, while a screen showing kW may indicate the rate of use at that moment.

Why does my gas meter show a different figure from my bill?

The meter may record gas volume while the bill reports energy after a conversion. Units, reading dates, and estimated readings can also differ. Compare the same register and ask your utility how it converts the meter reading.

Can I read a smart meter without its in-home display?

Yes. The meter itself usually has a screen or button that displays its registers. The in-home display is a separate device and may not be needed to take an official reading.

What should I do if the meter is inaccessible or damaged?

Do not climb, force a door, remove a cover, or touch damaged equipment. Contact the property manager or utility for access or assistance; if there is an immediate electrical or gas hazard, move away and contact the appropriate emergency service.

Further reading: U.S. Department of Energy. Details can change, so check the official page for anything that matters to you. Spotted a mistake? Tell us. How we write an answer.