Tamil Nadu Electricity Bill Calculator
(TANGEDCO (Tamil Nadu Generation and Distribution Corporation))
Estimate your monthly electricity bill in Tamil Nadu using official tariff rates across domestic, commercial, industrial and agriculture connection categories.
Optional — a known flat subsidy/rebate to deduct from the total
Estimated Monthly Bill
LT-I(A) Domestic — Up to 100 Units (Bi-monthly) · Tamil Nadu⚡ 200 units this month · avg rate ₹2.48/unit
100% free electricity. The Government of Tamil Nadu provides a full subsidy for the entire consumption up to 100 units.
TANGEDCO (Tamil Nadu Generation and Distribution Corporation) · TNERC (Tamil Nadu Electricity Regulatory Commission)
View the tariff source ↗⚠️ Tamil Nadu's rates have not been re-checked against its current tariff order yet. Treat this as a rough estimate, compare it with your latest bill, and use Customize to correct any rate.
Electricity Bill Calculator by State
Every Indian state and UT sets its own tariff order — pick yours below to open the calculator with that state already selected.
Electricity Tariff in Tamil Nadu
TANGEDCO (Tamil Nadu Generation and Distribution Corporation) is Tamil Nadu's electricity distribution utility, regulated by TNERC (Tamil Nadu Electricity Regulatory Commission), which sets tariffs across 22 connection categories — domestic, commercial, industrial, agriculture and others — each with its own slab structure and electricity duty rate.
View Tamil Nadu's official tariff order ↗
Domestic Tariff Slabs — LT-I(A) Domestic — 201 to 500 Units (Bi-monthly)
| Slab (units) | Rate |
|---|---|
| 0 – 100 | ₹4.95 / unit |
| 101 – 200 | ₹4.95 / unit |
| 201 – 400 | ₹4.95 / unit |
| 401 – 500 | ₹6.65 / unit |
Billing type: Telescopic · Meter rent: ₹0 · Electricity duty: 0%
⚠️ Tamil Nadu's rates have not been re-checked against its current tariff order yet. Treat this as a rough estimate and compare it with your latest bill.
How to Use This Calculator
- Step 1 — Connection Category: Tamil Nadu is pre-selected; choose Domestic, Commercial, Industrial, Agriculture or another category — each has its own slab structure and duty rate.
- Step 2 — Monthly Units: Enter the kWh figure from your last bill to see the slab-wise breakdown instantly.
- Step 3 — Fine-tune: For categories billed per kW of sanctioned load, enter your actual contracted load, or open "Customize Tariff & Charges" to match your exact bill.
Frequently Asked Questions
What are the domestic electricity tariff slabs in Tamil Nadu?
Under LT-I(A) Domestic — 201 to 500 Units (Bi-monthly) (TANGEDCO (Tamil Nadu Generation and Distribution Corporation)), telescopic billing applies across 4 slabs, from ₹4.95/unit for the first 100 units up to ₹6.65/unit for the highest slab.
What is the electricity duty in Tamil Nadu?
For LT-I(A) Domestic — 201 to 500 Units (Bi-monthly) in Tamil Nadu, electricity duty is charged at 0% of the energy charge. Other connection categories in the state can have a different duty rate — switch categories in the calculator above to see each one.
Is electricity billing telescopic or non-telescopic in Tamil Nadu?
Tamil Nadu's LT-I(A) Domestic — 201 to 500 Units (Bi-monthly) category uses telescopic billing. That means each unit is charged at the rate of the slab it falls into — only the portion above a threshold is billed at the higher rate, not your entire consumption.
Which DISCOM supplies electricity in Tamil Nadu?
TANGEDCO (Tamil Nadu Generation and Distribution Corporation), regulated by TNERC (Tamil Nadu Electricity Regulatory Commission), is the distribution utility whose tariff order this calculator uses.
Tariff data compiled from Tamil Nadu's official DISCOM/regulator tariff order — verify against your own bill before making financial decisions.