Tamil Nadu electricity bill checker
Got a TNPDCL bill that looks too high? Type in the units, load and amounts printed on it. We work out what the tariff says each line should be and point to anything that doesn’t add up.
- Runs in your browser; nothing is uploaded
- Tariff of 30 June 2025
- Checks load, area and slab mistakes
What a correct Tamil Nadu bill shows
For 400 units in a 2-month bill, a home on the Tamil Nadu tariff should see these lines. Use them to test your own bill line by line.
| Line | Units × rate | Amount |
|---|---|---|
| Energy, units 1–200 | 200 × ₹0.00 | ₹0.00 |
| Energy, units 201–400 | 200 × ₹4.70 | ₹940.00 |
| Bill | ₹940.00 |
Urban home, 2 kW, the calculator’s default options. Duty and the monthly fuel surcharge are not in this example unless the tariff builds them in.
What to check on a Tamil Nadu bill
- The bill covers 2 months, and the slab limits are for the whole bill. A bill for more days than usual can cross a limit.
- The rate table depends on your total units. Cross the threshold and a different table applies to the whole bill.
- An estimated or average reading gives a wrong bill. Compare the reading on the bill with your meter.
Terms on a Tamil Nadu bill
About the checker
What does the bill checker do?
It works out what the current tariff says each line of your bill should be, for the units and load printed on it, and compares that with the amounts you type in. If a line does not match, it tries every setting the tariff allows (load, rural or urban, phase and so on) to find one that explains the difference.
Is my bill sent anywhere?
No. The check runs in your browser. Nothing you type is uploaded or stored.
What should I do if a line does not match?
First check the units, load and category printed on the bill. If the bill uses an estimated or average reading, or the wrong load or category, ask your discom to correct it. If that does not settle it, you can complain to the discom’s Consumer Grievance Redressal Forum.
Why is there money left over after energy and fixed charges?
Most bills add electricity duty, a monthly fuel surcharge, meter rent, cesses or arrears. Type those lines in too and the checker accounts for them.