100 units electricity bill in Tamil Nadu (TNEB bill)
A home in Tamil Nadu that uses 100 units in a 2-month bill pays about ₹0 on today’s TNERC tariff (order of 30 June 2025). The Tamil Nadu home rates already include a State subsidy, and it makes these units free.
- No bill to pay
- Tariff before schemes: ₹0
- TNPDCL
How the 100-unit bill adds up
| Slab (units) | Units × rate | Amount |
|---|---|---|
| 1–200 | 100 × ₹0.00 | ₹0.00 |
| Energy charge | ₹0.00 | |
| Bill | ₹0.00 | |
Urban home, default options of the Tamil Nadu calculator, 2-month bill. Source: TNERC Suo-motu Order No. 6 of 2025 - Determination of Tariff for Distribution for FY 2025-26 (CPI-linked revision under .
What changes the bill
- One more unit adds ₹0.00.
- At 0 units the bill is ₹0; at 200 units it is ₹0.
Where 100 units sit in the Tamil Nadu slabs
All 100 units are free in the tariff.
100 units in a 2-month bill is about 1.7 units a day, or 50 units a month.
50 units a month in nearby states
50 units a month, priced under each tariff in the region. Tamil Nadu is number 1 of 7, from the lowest bill.
| State or UT | Bill a month | Average a unit |
|---|---|---|
| Tamil Nadu | ₹0 | ₹0.00 |
| Karnataka | ₹0 | ₹0.00 |
| Telangana | ₹158 | ₹3.15 |
| Andhra Pradesh | ₹167 | ₹3.34 |
| Kerala | ₹218 | ₹4.35 |
| Lakshadweep | ₹228 | ₹4.55 |
| Puducherry | ₹237 | ₹4.73 |
Urban home, 2 kW, the calculator’s default options, with each state’s own free-unit schemes. States that bill every two or three months are shown per month.
What this figure includes
- Rates are what the consumer pays after Government subsidy (first 200 units free up to 500 units; 100 units free above).
- Electricity tax not included: current notified rate not yet confirmed.
Other bills in Tamil Nadu
100 units in nearby states: Karnataka, Kerala, Telangana, Andhra Pradesh, Puducherry, Lakshadweep.
Questions
How much is the electricity bill for 100 units in Tamil Nadu?
About ₹0 for 100 units in a 2-month bill on the Tamil Nadu tariff, with the calculator’s default options. Your load, phase and any monthly fuel charge can change it.
What is the per unit rate for 100 units in Tamil Nadu?
The bill is nil, so the average is ₹0 a unit. The last units are charged at ₹0.00 each in the tariff.
How many units a day is 100 units in a 2-month bill?
About 1.7 units a day, or 50 units a month. One unit is one kWh: a 1,000-watt load for one hour.
How do I lower a 100-unit bill?
Use the appliance calculator to find what uses the most power.