What your electric meter measures and why it matters
Your electric meter is a device that measures how much electricity flows into your home. It sits on the outside of your house, usually in a gray or black box, and records the total amount of power you use in kilowatt-hours (kWh). The utility company reads this meter to know how much to charge you on your bill.
Understanding how your meter works helps you spot billing errors, track your own usage, and know what to expect when someone comes to read it. The meter itself does the measuring automatically — you do not have to do anything. But knowing how to read the numbers yourself can answer questions about your bill or help you understand where your electricity is going.
Key Takeaways
- Electric meters measure electricity in kilowatt-hours and display a five or six-digit number that only goes up, never down.
- Most meters are read once a month by a utility company employee who walks to your meter and records the number, or by an automated system that reads it remotely.
- You can read your own meter by finding the main display dial and writing down all the digits in order from left to right.
- Your monthly bill is calculated by subtracting last month's meter reading from this month's reading.
- Smart meters send readings automatically to the utility company and let you track your usage in real time through an online account.
The two types of meters: analog dials and digital displays
Older meters use analog dials — four or five clock-like faces with numbers around the edge and a needle that points to a number. Reading an analog meter takes a little practice because the needles move in opposite directions on alternating dials. You read the number the needle has just passed, not the one it is pointing at. If the needle is between two numbers, you use the lower number.
Newer meters have a digital display that shows a five or six-digit number, like a car odometer. This number only goes up and never resets. Digital meters are much simpler to read — you just write down all the digits you see, left to right. Some digital meters also show other information like voltage or power factor, but the main number is what the utility company uses for your bill.
Many areas are now installing smart meters, which are digital meters that send readings to the utility company automatically using radio signals or internet connection. You do not have to wait for someone to visit your home. Smart meters often come with an online account where you can see your usage broken down by day or hour.
How utility companies read your meter each month
Most utility companies send a meter reader to your home once a month. This person walks to your meter, records the number, and leaves. The whole process takes less than a minute. They do not need to enter your home — the meter is outside. If your meter is hard to reach or blocked, contact your utility company to ask them to move it or to arrange a time when you can clear the path.
Some utility companies use automated meter reading (AMR), where a device in a truck drives through your neighborhood and reads all the meters wirelessly from the street. You will not see anyone at your house. This method is faster and more accurate than manual reading.
If you have a smart meter, the utility company receives your reading automatically throughout the day. No one needs to visit. You can often see your current usage in an online portal or mobile app provided by your utility company.
How to read your own meter
For a digital meter: Look at the main display window. Write down every digit you see, from left to right. Ignore any decimal points or letters. If your meter shows 00456, your reading is 456 kilowatt-hours. If it shows 12789, your reading is 12,789 kilowatt-hours. That is all there is to it.
For an analog meter: Start with the leftmost dial. Look at where the needle has just passed and write that number down. Move to the next dial to the right. The needles on alternating dials spin in opposite directions, so pay attention to which way each one points. If a needle is exactly on a number, look at the dial to its right — if that needle has not yet reached zero, use the lower number on the dial you are reading. Write down all four or five digits in order.
Write down the reading on the same day each month so you can compare month to month. Your utility company will also have a record of your reading, so you can check their number against yours if you think there is an error.
Understanding your monthly bill and meter readings
Your utility company subtracts your previous month's meter reading from your current month's reading. The difference is how many kilowatt-hours you used that month. For example, if last month your meter read 10,500 and this month it reads 10,750, you used 250 kilowatt-hours. That number is multiplied by your rate per kilowatt-hour to calculate your bill.
The meter number itself is not your bill — it is just the total amount of electricity that has flowed into your home since the meter was installed. The meter only goes up. If you see a lower number than last month, the meter was replaced or reset, and the utility company will account for that on your bill.
If you notice your usage jumped significantly from one month to the next, check for appliances running longer than usual, a new device plugged in, or a malfunction. A refrigerator that runs constantly, a water heater set too high, or a heating or cooling system working overtime can all spike your usage.
What to do if someone needs to read your meter
Utility company employees have identification badges and will show them if you ask. They do not need access to your home — the meter is outside. If someone claims to be from the utility company but cannot show identification, do not let them in and call your utility company directly to verify.
If your meter is blocked by a gate, fence, or landscaping, the reader may not be able to reach it. Contact your utility company ahead of time if you know access will be difficult. Some companies will estimate your usage for a month or two if they cannot read the meter, then catch up when they can access it again.
If you have a smart meter, no one needs to visit at all. The meter sends readings automatically. If you are asked to provide access for a smart meter installation, the technician will need a few minutes outside your home and will not need to enter.
Smart meters and real-time usage tracking
Smart meters record your usage in smaller time intervals — sometimes every 15 minutes — and send that data to your utility company. This gives you much more detail about when you use the most electricity. Many utility companies offer online portals or apps where you can log in and see your usage by day, week, or month.
Some smart meters have a display on the meter itself that shows your current usage in real time. You can walk outside and see how much power you are drawing at that moment. This can help you identify which appliances use the most energy — turn something off and watch the number drop.
If your utility company offers time-of-use rates, a smart meter lets you take advantage of lower prices during off-peak hours. You can shift laundry, dishwashing, or charging devices to times when electricity is cheaper. Check your utility company's website to see if this option is available in your area.
Frequently Asked Questions
Can I read my meter myself and send the number to the utility company?
Yes. Many utility companies accept meter readings from customers, either through their website, a phone line, or an app. This is useful if you are moving and want an accurate final reading, or if you want to double-check the company's reading. Call your utility company to ask how to submit a reading.
What if my meter reading seems way too high?
First, compare it to the previous month's reading to make sure the meter actually went up that much. If it did, check for appliances running constantly, a heating or cooling system working overtime, or a water heater malfunction. If you cannot find a reason, contact your utility company and ask them to verify the meter is working correctly. They can send someone to check it.
Do I need to do anything special if I get a smart meter installed?
No. The technician will install it outside your home and it will work automatically from that point on. You do not have to read it or do anything else. If your utility company offers an online account to view your usage, you can set that up, but it is optional.
What happens if the meter reader cannot access my meter?
The utility company will either estimate your usage based on your history, or they will try again the next month. If access is a recurring problem, contact them to discuss solutions — you might need to trim landscaping, unlock a gate, or arrange a specific time for them to visit.
Is my meter reading the same as my kilowatt-hour usage?
No. Your meter reading is the total amount of electricity used since the meter was installed. Your monthly usage is the difference between this month's reading and last month's reading. That difference is what appears on your bill.