Calculate Your Tamil Nadu Electricity Bill
Estimate your monthly power cost instantly based on the latest tariff slab rates of Tamil Nadu.
Domestic
LT-I(A) Domestic — 201 to 500 Units (Bi-monthly)
Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0 - 100 | ₹4.95 |
| 101 - 200 | ₹4.95 |
| 201 - 400 | ₹4.95 |
| 401 - 500 | ₹6.65 |
Detailed Charges
Fixed Charge ₹0.00
LT-I(A) Domestic — Up to 100 Units (Bi-monthly)
Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0 - 100 | ₹4.95 |
Detailed Charges
Fixed Charge ₹0.00
LT-I(A) Domestic — 101 to 200 Units (Bi-monthly)
Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0 - 100 | ₹4.95 |
| 101 - 200 | ₹4.95 |
Detailed Charges
Fixed Charge ₹0.00
LT-I(A) Domestic — 501 Units & Above (Bi-monthly)
Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0 - 100 | ₹4.95 |
| 101 - 200 | ₹4.95 |
| 201 - 400 | ₹4.95 |
| 401 - 500 | ₹6.65 |
| 501 - 600 | ₹8.80 |
| 601 - 800 | ₹9.95 |
| 801 - 1000 | ₹11.05 |
| 1001+ | ₹12.15 |
Detailed Charges
Fixed Charge ₹0.00
LT-I(B) Huts & Poor Households
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹10.10 |
Detailed Charges
Fixed Charge ₹332.00
Commercial
LT-I(D) Common Facilities in Multi-Tenement Buildings
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹8.80 |
Detailed Charges
Fixed Charge ₹110.00 / kW
Electricity Duty 5.0%
LT-I(E) Common Facilities — Residential (≤3 Floors, No Lift)
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹8.80 |
Detailed Charges
Fixed Charge ₹110.00 / kW
Electricity Duty 5.0%
LT-II(A) Public Lighting & Local-Body Water Supply
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹8.80 |
Detailed Charges
Fixed Charge ₹110.00 / kW
Electricity Duty 5.0%
LT-II(B)(1) Govt. Educational Institutions & Govt. Hospitals
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹8.80 |
Detailed Charges
Fixed Charge ₹110 - ₹608 / kW
Electricity Duty 5.0%
LT-II(B)(2) Private Educational Institutions & Private Colleges
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹9.40 |
Detailed Charges
Fixed Charge ₹110 - ₹608 / kW
Electricity Duty 5.0%
LT-II(C) Places of Public Worship
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0 - 120 | ₹6.40 |
| 121+ | ₹7.75 |
Detailed Charges
Fixed Charge ₹110.00 / kW
Electricity Duty 5.0%
LT-V Miscellaneous / General Purpose
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0 - 100 | ₹6.65 |
| 101+ | ₹10.45 |
Detailed Charges
Fixed Charge ₹110 - ₹608 / kW
Electricity Duty 5.0%
LT-VI Construction & Temporary Purposes
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹13.25 |
Detailed Charges
Fixed Charge ₹608.00 / kW
Electricity Duty 5.0%
HT-II(A) Govt. Edu. Institutions, Railways & Lift Irrigation
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹7.75 |
Detailed Charges
Fixed Charge ₹608.00 / kW
Electricity Duty 5.0%
HT-II(B) Private Edu. Institutions & Hostels
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹8.25 |
Detailed Charges
Fixed Charge ₹608.00 / kW
Electricity Duty 5.0%
HT-III Miscellaneous Categories
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹9.40 |
Detailed Charges
Fixed Charge ₹608.00 / kW
Electricity Duty 5.0%
HT-IV Construction Activities & Temporary Purposes
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹13.25 |
Detailed Charges
Fixed Charge ₹608.00 / kW
Electricity Duty 5.0%
Industrial
LT-III(A)(1) Cottage & Micro Industries
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0 - 500 | ₹4.95 |
| 501+ | ₹7.15 |
Detailed Charges
Fixed Charge ₹77.00 / kW
Electricity Duty 5.0%
LT-III(A)(2) Power Looms
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0 - 500 | ₹7.15 |
| 501+ | ₹8.25 |
Detailed Charges
Fixed Charge ₹110.00 / kW
Electricity Duty 5.0%
LT-III(B) Industries & IT Services
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹8.25 |
Detailed Charges
Fixed Charge ₹84 - ₹608 / kW
Electricity Duty 5.0%
HT-I Industries, Factories & IT Services
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹7.50 |
Detailed Charges
Fixed Charge ₹608.00 / kW
Electricity Duty 5.0%
Agriculture
LT-IV Agriculture & Allied Activities (Metered)
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹4.95 |
Detailed Charges
Fixed Charge ₹0.00
Disclaimer: Tariff rates listed here are indicative. While we make every effort to keep them updated, please cross-verify with the Official Source.
Applicable Electricity Boards & Utilities
These electricity tariff rates are applicable for consumers in Tamil Nadu served by TANGEDCO (Tamil Nadu Generation and Distribution Corporation). The rates are regulated and approved by the respective State Electricity Regulatory Commission.
State / UT
Tamil Nadu
Electricity Board
TANGEDCO (Tamil Nadu Generation and Distribution Corporation)
Regulator
TNERC (Tamil Nadu Electricity Regulatory Commission)
Last Updated
July 2026
Available in Multiple Languages
View electricity tariffs and slab rates in your preferred local language.
Frequently Asked Questions
What are the latest electricity tariff rates in Tamil Nadu for 2026?
The latest verified tariff rates for Tamil Nadu are structured by connection categories (such as Domestic, Commercial, and Industrial) as displayed in the tables above. These rates have been updated according to the latest tariff orders published by TNERC (Tamil Nadu Electricity Regulatory Commission).
How do I calculate my Tamil Nadu electricity bill online?
You can estimate your bill instantly by using our dedicated Tamil Nadu Electricity Bill Calculator. Simply enter your total units consumed (kWh) and sanctioned load to get a detailed breakdown.
Why is my Tamil Nadu electricity bill higher than the energy charges?
In addition to per-unit slab rates (energy charges), your Tamil Nadu electricity bill includes other components like fixed charges, meter rent, electricity duty (tax), and fuel adjustment surcharges.
How often are these electricity tariff rates updated?
Electricity tariff rates in India are typically updated once a year by the respective State Electricity Regulatory Commission (SERC). We update our directories as soon as new tariff orders are verified.
What is the price of 1 unit of electricity in Tamil Nadu?
The rate for the first unit of domestic electricity in Tamil Nadu is ₹4.95 per unit. Note that this rate may increase as your consumption moves to higher slabs.
What are the highest and lowest electricity slab rates in Tamil Nadu?
For domestic consumers in Tamil Nadu, the lowest slab rate starts at ₹4.95 per unit, and the highest slab rate can go up to ₹6.65 per unit.