Did your latest EB bill give you a small shock? You checked the amount twice, looked at the fan and the fridge, and still could not understand how it went up so much. Now think about one more thing. Did anyone actually come to your house to take the EB reading this time? If the answer is no, or if they came much later than usual, that alone can be the reason behind your high EB bill.
Over the last few months, many families across Tamil Nadu have raised the same complaint. Many got a high EB bill out of nowhere. Bills suddenly doubled, readings were taken late, and some homes lost their free units without using any extra power. In this guide, I will explain in simple words why this happens, how to check your EB bill properly, and how to raise a complaint step by step, right up to the online CGRF petition, so you don’t end up paying for units you never used.
What Is Happening With EB Bills in Tamil Nadu Right Now
In July 2026, after a wave of complaints about inflated bi-monthly bills, delayed meter readings and denial of free electricity, TNPDCL sent an internal circular to its engineers asking for stricter billing checks and field inspections. The circular itself listed wrong meter readings, defective meters and weak supervision as the main reasons behind faulty bills.
A special re-verification drive followed. As per figures shared by the board in August, 15,323 connections that showed a big jump in usage were physically checked, and 100 of them had mistakes in the reading or the bill. Those bills were to be revised. That may sound like a small number, but if your home is one of those 100, it is a real loss for you.
Part of the problem is staff shortage. Reports say around 60 percent of the assessor posts in the state are vacant, which means fewer people are available to go house to house and take readings on time. To fix this, the board announced that meter reading will be given to contract workers from October 2026, using a mobile app that captures the reading directly from the meter. Until that settles down, delays and mistakes can still happen. So it pays to keep an eye on your own bill. 
How EB Billing Works in Tamil Nadu
To understand a high EB bill, you first need to know how billing works. For most homes in Tamil Nadu, the EB reading is taken once every two months. The units you used in those two months decide your bill. This is called bi-monthly billing.
The most important number to remember is 500. Under the free electricity scheme announced in 2026, a domestic connection that uses 500 units or less in a two-month cycle gets 200 units free. If the usage goes above 500 units, even by a few units, the free units drop to 100, and the remaining units are charged at higher slab rates. So the bill does not go up slowly. It jumps, and that is how a normal bill turns into a high EB bill overnight.
This is exactly why the date of your EB reading matters so much. The slab rates are revised by the regulator from time to time, so for the latest numbers you can check the tariff details published by the board. But the 500-unit line is the one every Tamil Nadu family should know about.
No One Came to Take the EB Reading? Here Is Why Your Bill Can Go Up
Many people think, “If the reading is late, I will just pay a little later. What’s the problem?” Unfortunately, it is not that simple. A late or missed reading can push up your high EB bill in a few different ways.
More Days Get Counted in One Bill
Let’s take a simple example. Say your home uses about 7.5 units a day. If the reading is taken on day 60, your bill shows around 450 units. You stay below 500 and get your full 200 free units. Now imagine the assessor comes on day 75 instead. The same home, with the same daily use, now shows around 562 units in one bill. You have crossed 500, you lose 100 free units, and the extra units are charged at a higher rate. You did nothing different, but you now have a high EB bill.
Estimated or Average Bills
If no reading is taken at all, the bill may be raised on an estimated or average basis. Later, when the actual reading is finally taken, all the pending units can land together in one cycle. That single bill can then cross 500 units easily, even if your monthly usage was normal.
Wrong Reading Entered
Sometimes the problem is plain human error. A digit is typed wrongly, the reading of the next house is entered against your number, or a faulty meter keeps running fast. These mistakes don’t fix themselves. Usually they come to light only when a consumer checks and complains.
Signs That Your High EB Bill May Be Wrong
Not every high EB bill is a mistake. Summer fans, a new AC, guests at home or a function can all push usage up. But a few signs should make you look more closely.
The first sign is a sudden jump when nothing has changed at home. If your last three bills were around the same number and this one is almost double, something may be wrong.
The second sign is when the reading date on the bill is far from the usual date. If your readings usually happen in the first week of the month and this time it says the third week, more days have been counted.
The third sign is when the “previous reading” on this bill does not match the “current reading” on your last bill. They should be the same number.
The fourth sign is when your bill shows a high number of units but the reading on your meter today is lower than what the bill says. That is a clear error, and you should take a photo right away.
How to Check Your EB Bill Online
When you get a high EB bill, the first job is to check the details properly. You don’t have to stand in a queue for this. You can check everything from your phone in a couple of minutes.
Step 1: Keep Your Service Connection Number Ready
Your service connection number is printed on your EB card and on old bills. It usually has a region code, a section code and a consumer number. Keep this handy, because every website and app will ask for it.
Step 2: Open the TNPDCL Bill Status Page or App
You can use the official TNPDCL website or the TNEB mobile app. Enter your service number and your registered mobile number. The page will show your latest bill amount, units used, reading date and due date.
Step 3: Compare With Your Old Bills
Look at your last few bills side by side. Check the units, the reading dates and the number of days between two readings. If the gap is much more than 60 days, write it down. This is useful proof for your complaint.
Step 4: Check the Bill in Payment Apps Too
Apps like Google Pay, PhonePe and Paytm can also fetch your EB bill when you select TNPDCL or TNEB as the biller. It is a quick way to cross check the amount, though for reading dates and unit details the official page is better.
How to Read Your EB Meter Yourself
This is the one habit that can save you a lot of trouble. Most homes now have a digital meter with a small display. The number shown next to kWh is the total units used since the meter was installed.
Once every two weeks, or at least once a month, take a clear photo of the meter display with your phone. Your phone saves the date and time automatically. Over time, you will know roughly how many units your home uses in a day.
If a high EB bill ever comes with a number that does not match, you have real proof in your gallery. Officials take a complaint much more seriously when you show dated meter photos instead of just saying, “My bill is too high.”
If your meter display has several screens, it may cycle through them on its own, or you may need to press a small button. Note the kWh screen, not the date or time screen.
How to Raise a Complaint for a High EB Bill
Once you are fairly sure your high EB bill is wrong, don’t sit on it. Start with the simplest option and move up only if the problem is not solved.
Call Minnagam: 94987 94987 or 1912
Minnagam is the consumer service centre of the electricity board. You can call 94987 94987 or dial 1912 and register a complaint about a high EB bill, a wrong reading or a meter problem. Keep your district name and service connection number ready. Note down the complaint number they give you, because you will need it later.
Visit Your Local EB Section Office
You can also go to your nearest section office and give a written complaint. Write your name, address, service connection number, the bill period, what you think is wrong, and what you want them to do. Attach a copy of the bill and print out your meter photos if you have them. Ask for an acknowledgement or at least a receipt with a date.
During the recent drive, the board itself told consumers with doubtful bills to visit the nearest office or call Minnagam. So you are doing exactly what they asked.
Ask for a Meter Test If the Meter Looks Faulty
If you suspect the meter itself is running fast, ask in writing for a meter accuracy test. If you are not happy with the board’s own test, you can ask for the meter to be checked at an approved independent lab. There may be a testing fee. Generally, if the meter is found faulty, the fee is returned to you, and if the meter is found to be working correctly, you bear the cost. Ask the office about the current fee before you go ahead.
Ask Them to Explain the Units
When you meet the officer, ask a simple question. How were these units calculated, and on which reading date? If the reading was late or estimated, request that the bill be checked and corrected based on the actual reading. Stay polite but firm, and keep a copy of everything you give and get.
How to File a CGRF Complaint Online
If your high EB bill complaint at the section office is not solved, or you are not happy with the answer, you can go to the Consumer Grievance Redressal Forum, called CGRF. Every distribution circle in Tamil Nadu has one, and you can file your petition online.
Step 1: Open the CGRF Page
Go to the official CGRF page of the electricity board. There are two options there. One is for normal electricity complaints like power cuts and meter issues, and the other is for registering a CGRF petition. For a high EB bill grievance that was not solved at the office level, choose the CGRF petition option. You will find the button for this page near the end of this post.
Step 2: Go to Petition Entry
On the CGRF portal, use the Petition Entry menu to fill in your details. Give your name, contact details, service connection number and circle, and explain your complaint clearly. Mention your Minnagam complaint number or office complaint details, the bill period and the amount you are disputing.
Step 3: Save Your Petition ID
Once you submit, you get an acknowledgement right away, along with a petition ID. Take a screenshot or print it. Every update about your case is linked to this ID.
Step 4: Track the Status
You can check the progress any time using the Petition Status menu. The forum is expected to pass an order within two months from the date it receives your complaint. When the order is ready, you can download it from the Latest Orders section by choosing your circle.
You can attend the hearing yourself, or send a person of your choice to speak for you. If you prefer paper, you can also send a written complaint to the forum chairperson at your circle office in the prescribed format.
What If CGRF Does Not Solve Your Problem?
If you are not satisfied with the CGRF order, there is one more level. You can appeal to the Tamil Nadu Electricity Ombudsman within 30 days from the date of the CGRF order. Keep your order copy, petition ID and all earlier papers ready for this.
Most high EB bill problems get sorted at the section office or the CGRF level itself, especially when you have proper proof. But it is good to know that the option exists. If you want to know more about how electricity distribution is organised in the state, the TNPDCL page on Wikipedia gives a short background.
Simple Habits to Avoid a High EB Bill Shock
The best way to deal with a high EB bill is to stop it before it happens. A few small habits keep you in control.
Note down your usual reading date. If the assessor has not come within a few days of that date, call Minnagam and ask when the reading will be taken. A quick call early is much better than a long fight later.
Keep an eye on your usage near the 500-unit line. If your two-month usage is usually around 430 or 450 units, you are close to the edge. A few extra hours of AC in summer, or a late reading, can push you over. Simple things like switching off the geyser after use, cleaning AC filters and turning off appliances at the switch help more than you think.
Save every bill and every payment receipt, either as a photo or a PDF. When you have a complaint, these old bills become your strongest evidence.
Be careful with anyone who calls or messages you saying your power will be cut tonight unless you pay immediately through a link. Real bills and reminders come through official channels. Similar scams happen in other areas too, like the fake rooftop tower rent offers we explained in our post on Jio tower installation on rooftop and the ₹50,000 rent claim.
Common Mistakes People Make With a High EB Bill
The first mistake is paying a high EB bill quietly and forgetting about it. Many people think it is not worth the effort. But if the reading error is not corrected, it can continue in the next cycle too.
The second mistake is not paying at all while the complaint is pending. A disconnection can make things worse. Ask the section office what amount you should pay while your complaint is being checked, and get it in writing if possible.
The third mistake is complaining without proof. “The bill is too high” is easy to ignore. “My reading was taken on day 74, here are my last four bills, and here is my meter photo dated last week” is not.
The fourth mistake is jumping straight to the top level. Start with Minnagam and the section office first. It is always better to give the office a fair chance first, and it also makes your CGRF petition stronger.
Conclusion
A high EB bill is not always a sign that you used more power. Very often, the real reason is a late reading, an estimated bill or a simple typing mistake. The good news is that you have clear ways to check it and get it corrected, starting from a phone call to Minnagam and going up to an online CGRF petition if needed.
Make it a habit to note your reading date, photograph your meter now and then, and compare every new bill with the old ones. If you spot a high EB bill, complain early with proof. A little attention every two months can save you hundreds of rupees over the year.
If you found this useful, you may also like our post on the native chicken and goat farming scheme in Tamil Nadu, and our guide on checking if your gold is original with the BIS CARE app. And if you have faced a wrong EB bill recently, share your experience in the comments. It might help someone in your area.
