Know your electricity bill
before it arrives
Enter the units from your meter and see a slab-by-slab estimate of your Tamil Nadu domestic bill in seconds.
Current reading minus previous reading, for the full billing cycle.
Enter your units to see the slab breakdown.
How it works
Three quick steps, no sign-up needed.
Read your meter
Subtract the previous cycle’s reading from the current one to get units consumed.
Enter the units
Type the number or tap a quick value. Choose bi-monthly or monthly billing.
See the breakdown
Get the total, average rate and the charge for every tariff slab.
Solar panel calculator
See how much a rooftop system could cut your bill and when it pays for itself.
Ways to lower your bill
Small changes that add up over a year.
Switch to BLDC fans
A 28 W BLDC fan uses far less than an old 75 W fan and keeps running well in low voltage.
Use LED lighting
LEDs use roughly 75% less energy than incandescent bulbs.
Set AC to 24 °C
Each degree lower can raise AC energy use by about 6%.
Unplug idle devices
Standby power quietly adds units every cycle.
Planned power shutdowns
Live schedules come straight from the official TNPDCL outages portal.
- Pick your circle on the official page
- Enter the captcha shown there
- Tap Submit to see areas and timings
The official site requires a captcha, so results can’t be shown directly here.
Frequently asked questions
What does this calculator estimate?
The energy charge for a domestic (residential) connection in Tamil Nadu, calculated slab by slab from the units you enter.
Is the result exactly my final bill?
It’s an estimate. Your actual bill may include fixed charges, arrears or other adjustments that are not part of this calculation.
How do I find my units consumed?
Subtract the previous meter reading from the current one. TNEB bills most domestic consumers every two months.
Where do the slab rates come from?
They follow the TNERC domestic tariff structure. Always confirm against the latest official TNEB tariff order.