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
LT-I(A) Domestic — Up to 100 Units (Bi-monthly)
Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0 - 100 | ₹4.95 |
Detailed Charges
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
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
LT-I(B) Huts & Poor Households
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹10.10 |
Detailed Charges
Commercial
LT-I(D) Common Facilities in Multi-Tenement Buildings
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹8.80 |
Detailed Charges
LT-I(E) Common Facilities — Residential (≤3 Floors, No Lift)
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹8.80 |
Detailed Charges
LT-II(A) Public Lighting & Local-Body Water Supply
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹8.80 |
Detailed Charges
LT-II(B)(1) Govt. Educational Institutions & Govt. Hospitals
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹8.80 |
Detailed Charges
LT-II(B)(2) Private Educational Institutions & Private Colleges
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹9.40 |
Detailed Charges
LT-II(C) Places of Public Worship
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0 - 120 | ₹6.40 |
| 121+ | ₹7.75 |
Detailed Charges
LT-V Miscellaneous / General Purpose
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0 - 100 | ₹6.65 |
| 101+ | ₹10.45 |
Detailed Charges
LT-VI Construction & Temporary Purposes
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹13.25 |
Detailed Charges
HT-II(A) Govt. Edu. Institutions, Railways & Lift Irrigation
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹7.75 |
Detailed Charges
HT-II(B) Private Edu. Institutions & Hostels
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹8.25 |
Detailed Charges
HT-III Miscellaneous Categories
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹9.40 |
Detailed Charges
HT-IV Construction Activities & Temporary Purposes
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹13.25 |
Detailed Charges
Industrial
LT-III(A)(1) Cottage & Micro Industries
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0 - 500 | ₹4.95 |
| 501+ | ₹7.15 |
Detailed Charges
LT-III(A)(2) Power Looms
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0 - 500 | ₹7.15 |
| 501+ | ₹8.25 |
Detailed Charges
LT-III(B) Industries & IT Services
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹8.25 |
Detailed Charges
HT-I Industries, Factories & IT Services
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹7.50 |
Detailed Charges
Agriculture
LT-IV Agriculture & Allied Activities (Metered)
Non-Telescopic| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0+ | ₹4.95 |
Detailed Charges
Tamil Nadu Electricity Tariff Rates
Electricity distribution in Tamil Nadu is regulated by TNERC (Tamil Nadu Electricity Regulatory Commission) and managed by TANGEDCO (Tamil Nadu Generation and Distribution Corporation). The tariff schedule covers 4 consumer categories (Domestic, Commercial, Industrial, Agriculture), with billing based on unit energy consumption, connected load capacity, and connection classification.
Tamil Nadu 1 Unit Rate
For domestic electricity consumers in Tamil Nadu, the initial 1 unit rate starts at ₹4.95 per kWh for consumption within the first slab (up to 100 units per month).
Slab Rates and Billing Structure
Residential electricity consumption in Tamil Nadu is billed using a telescopic structure across 4 consumption slabs. Energy rates begin at ₹4.95 per unit in the initial slab and increase up to ₹6.65 per unit for higher consumption brackets.
Tariff Categories
The tariff schedule for Tamil Nadu includes 4 active consumer categories: Domestic, Commercial, Industrial, Agriculture. Each category has specific energy rates and fixed charges designed for domestic, commercial, agricultural, or industrial usage.
Fixed Charges and Other Charges
In addition to unit energy rates, electricity bills in Tamil Nadu include monthly fixed charges, demand rates, or statutory surcharges based on connection parameters.
- Fixed charges: ₹0.00.
- State Electricity Duty: 5%.
Electricity Bill Calculation
To calculate an estimated electricity bill for Tamil Nadu, multiply your monthly energy consumption in kilowatt-hours (units) by the applicable slab energy rates, add monthly fixed or demand charges, and include applicable taxes or statutory duties. You can compute your estimated bill using our Tamil Nadu Electricity Bill Calculator.
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.
Available in Multiple Languages
View electricity tariffs and slab rates in your preferred local language.