TNEB bill calculator: Tamil Nadu electricity bill
Work out your TNEB (TNPDCL) electricity bill from the tariff set by TNERC. Enter the units from your meter reading and see the bill built slab by slab. TNEB is the old Tamil Nadu Electricity Board. TNPDCL now supplies and bills homes in Tamil Nadu, so a “TNEB bill” today is a TNPDCL bill.
- Billed every two months
- Order dated 30 June 2025
- Rates checked 15 October 2026
Enter your units to see the bill.
Domestic rates
What a home on the Domestic, multi-tenements, old age homes, handlooms tariff (LT IA) pays per unit after any subsidy built into the tariff.
Up to 500 units in a 2-month bill
| Units in a 2-month bill | Rate you pay |
|---|---|
| 1–200 | Free |
| 201–400 | ₹4.70 |
| 401–500 | ₹6.30 |
Above 500 units
| Units in a 2-month bill | Rate you pay |
|---|---|
| 1–100 | Free |
| 101–400 | ₹4.70 |
| 401–500 | ₹6.30 |
| 501–600 | ₹8.40 |
| 601–800 | ₹9.45 |
| 801–1000 | ₹10.50 |
| Above 1000 | ₹11.55 |
Fixed charge: None
Example bills
| Units per 2-month bill | Bill | Per month | Average per unit |
|---|---|---|---|
| 100 | ₹0.00 | ₹0.00 | ₹0.00 |
| 200 | ₹0.00 | ₹0.00 | ₹0.00 |
| 300 | ₹470.00 | ₹235.00 | ₹1.57 |
| 400 | ₹940.00 | ₹470.00 | ₹2.35 |
| 600 | ₹2,880.00 | ₹1,440.00 | ₹4.80 |
| 1000 | ₹6,870.00 | ₹3,435.00 | ₹6.87 |
Urban, single phase. Duty and fuel surcharge excluded.
Where these rates come from
- Regulator
- TNERC
- Order
- TNERC Suo-motu Order No. 6 of 2025 - Determination of Tariff for Distribution for FY 2025-26 (CPI-linked revision under T.O. No. 7 of 2022)
- Dated
- 30 June 2025
- In force from
- 1 July 2025
- Distributors
- Tamil Nadu Power Distribution Corporation Ltd (TNPDCL), formerly TANGEDCO
- Billing
- Every two months
- Document
- Open the tariff order (PDF)
Not in this estimate
- 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.
All LT tariff categories in Tamil Nadu
Every low-tension category in the order: homes, shops, industry, agriculture and more. Approved rates, before any government subsidy unless the order says otherwise.
LT IADomestic, multi-tenements, old age homes, handloomsVerified
Residential
| Units | Rate |
|---|---|
| 1–400 | ₹4.95 /kWh |
| 401–500 | ₹6.65 /kWh |
| 501–600 | ₹8.80 /kWh |
| 601–800 | ₹9.95 /kWh |
| 801–1000 | ₹11.05 /kWh |
| Above 1000 | ₹12.15 /kWh |
Which table applies depends on your total consumption (see below). Slabs counted on units per bi-monthly billing period.
Consumer-payable, bimonthly consumption <= 500 units (w.e.f. 10-05-2026)
| Units | Rate |
|---|---|
| 1–200 | ₹0.00 /kWh |
| 201–400 | ₹4.70 /kWh |
| 401–500 | ₹6.30 /kWh |
Consumer-payable, bimonthly consumption > 500 units
| Units | Rate |
|---|---|
| 1–100 | ₹0.00 /kWh |
| 101–400 | ₹4.70 /kWh |
| 401–500 | ₹6.30 /kWh |
| 501–600 | ₹8.40 /kWh |
| 601–800 | ₹9.45 /kWh |
| 801–1000 | ₹10.50 /kWh |
| Above 1000 | ₹11.55 /kWh |
Fixed charge: None
Order 5/2026 adds 2.35/unit on 101-200 for consumers up to 500 units, making the first 200 units free from 10-05-2026. Before that date the 101-200 slab cost Rs 2.35.
Source: TNERC Suo-motu Order No. 6 of 2025 (T.O. No. 6 of 2025), Determination of Tariff for Distribution for FY 2025-26, dt 30-06-2025, effective 01-07-2025, p.14 table 2.3 (approved tariff); Order 4/2026 pp.7-9 (payable); Order 5/2026 pp.1-3. Open the order
LT IBHutsVerified
Hut services
| Units | Rate |
|---|---|
| All units | ₹10.10 /kWh |
Fixed charge: ₹332 per service per month, till installation of energy meter
Metered huts: Rs 10.10/unit; unmetered: Rs 332/service/month. Both fully paid by Government.
Source: TNERC Suo-motu Order No. 6 of 2025 (T.O. No. 6 of 2025), Determination of Tariff for Distribution for FY 2025-26, dt 30-06-2025, effective 01-07-2025, p.14. Open the order
LT ICBulk supply (single point metering)Verified
| Units | Rate |
|---|---|
| All units | ₹8.80 /kWh |
Fixed charge: ₹110 per service per month
Source: TNERC Suo-motu Order No. 6 of 2025 (T.O. No. 6 of 2025), Determination of Tariff for Distribution for FY 2025-26, dt 30-06-2025, effective 01-07-2025, p.14. Open the order
LT IDCommon facilities in multi-tenementsVerified
| Units | Rate |
|---|---|
| All units | ₹8.80 /kWh |
Fixed charge: ₹110 per kW per month
Source: TNERC Suo-motu Order No. 6 of 2025 (T.O. No. 6 of 2025), Determination of Tariff for Distribution for FY 2025-26, dt 30-06-2025, effective 01-07-2025, p.14. Open the order
LT IECommon facilities in multi-tenements (residential, up to 3 floors, no lift)Verified
| Units | Rate |
|---|---|
| All units | ₹8.80 /kWh |
Consumer-payable after GoTN subsidy of Rs 2.85/unit
| Units | Rate |
|---|---|
| All units | ₹5.95 /kWh |
Fixed charge: ₹110 per kW per month
Source: TNERC Suo-motu Order No. 6 of 2025 (T.O. No. 6 of 2025), Determination of Tariff for Distribution for FY 2025-26, dt 30-06-2025, effective 01-07-2025, p.15; Order 4/2026 sec X p.24. Open the order
LT IIAPublic lighting and water supply by Govt/local bodiesVerified
| Units | Rate |
|---|---|
| All units | ₹8.80 /kWh |
Fixed charge: ₹110 per kW per month
Source: TNERC Suo-motu Order No. 6 of 2025 (T.O. No. 6 of 2025), Determination of Tariff for Distribution for FY 2025-26, dt 30-06-2025, effective 01-07-2025, p.15. Open the order
LT IIB(1)Govt educational institutions & hostels, Govt hospitals, free-service hospitalsVerified
| Units | Rate |
|---|---|
| All units | ₹8.80 /kWh |
Fixed charge: per kW per month, by connected load All units: ₹110; All units: ₹359; All units: ₹608
Source: TNERC Suo-motu Order No. 6 of 2025 (T.O. No. 6 of 2025), Determination of Tariff for Distribution for FY 2025-26, dt 30-06-2025, effective 01-07-2025, p.15. Open the order
LT IIB(2)Private educational institutions/hostels, segregated private medical collegesVerified
| Units | Rate |
|---|---|
| All units | ₹9.40 /kWh |
Fixed charge: per kW per month, by connected load All units: ₹110; All units: ₹359; All units: ₹608
Source: TNERC Suo-motu Order No. 6 of 2025 (T.O. No. 6 of 2025), Determination of Tariff for Distribution for FY 2025-26, dt 30-06-2025, effective 01-07-2025, p.15. Open the order
LT IICActual places of public worshipVerified
| Units | Rate |
|---|---|
| 1–120 | ₹6.40 /kWh |
| Above 120 | ₹7.75 /kWh |
Slabs are telescopic: each band of units is charged at its own rate. Slabs counted on units per bi-monthly billing period.
Consumer-payable after GoTN subsidy (Rs 3.25/unit on first 120 units)
| Units | Rate |
|---|---|
| 1–120 | ₹3.15 /kWh |
| Above 120 | ₹7.75 /kWh |
Fixed charge: ₹110 per kW per month
Source: TNERC Suo-motu Order No. 6 of 2025 (T.O. No. 6 of 2025), Determination of Tariff for Distribution for FY 2025-26, dt 30-06-2025, effective 01-07-2025, p.15; Order 4/2026 sec IV pp.13-14. Open the order
LT IIIA(1)Cottage and micro industriesVerified
| Units | Rate |
|---|---|
| 1–500 | ₹4.95 /kWh |
| Above 500 | ₹7.15 /kWh |
Slabs are telescopic: each band of units is charged at its own rate. Slabs counted on units per bi-monthly billing period.
Fixed charge: ₹77 per kW per month
Source: TNERC Suo-motu Order No. 6 of 2025 (T.O. No. 6 of 2025), Determination of Tariff for Distribution for FY 2025-26, dt 30-06-2025, effective 01-07-2025, p.16. Open the order
LT IIIA(2)PowerloomsVerified
| Units | Rate |
|---|---|
| 1–500 | ₹7.15 /kWh |
| 501–1000 | ₹8.25 /kWh |
| 1001–1500 | ₹8.25 /kWh |
| Above 1500 | ₹8.25 /kWh |
Slabs are telescopic: each band of units is charged at its own rate. Slabs counted on units per bi-monthly billing period.
Consumer-payable (GoTN free supply up to 1000 units bimonthly)
| Units | Rate |
|---|---|
| 1–1000 | ₹0.00 /kWh |
| 1001–1500 | ₹4.45 /kWh |
| Above 1500 | ₹5.65 /kWh |
Nil up to 1000 units bimonthly; Rs 53.50/kW/month above 1000 units
Fixed charge: ₹110 per kW per month (approved)
Source: TNERC Suo-motu Order No. 6 of 2025 (T.O. No. 6 of 2025), Determination of Tariff for Distribution for FY 2025-26, dt 30-06-2025, effective 01-07-2025, p.16; Order 4/2026 sec V pp.14-15. Open the order
LT IIIBIndustries and IT servicesVerified
| Units | Rate |
|---|---|
| All units | ₹8.25 /kWh |
Fixed charge: per kW per month, by connected load All units: ₹84; All units: ₹165; All units: ₹608
Peak-hour ToD charge applies (GoTN subsidises part of it). GoTN's one-year subsidy for loads up to 50 kW ended 30-06-2026.
Source: TNERC Suo-motu Order No. 6 of 2025 (T.O. No. 6 of 2025), Determination of Tariff for Distribution for FY 2025-26, dt 30-06-2025, effective 01-07-2025, p.16; Order 4/2026 sec VIII. Open the order
LT IVAgriculture and allied activitiesVerified
| Units | Rate |
|---|---|
| All units | ₹4.95 /kWh |
Fixed charge: ₹3925 per HP per annum, till installation of energy meter
Metered: Rs 4.95/unit (also fully subsidised).
Source: TNERC Suo-motu Order No. 6 of 2025 (T.O. No. 6 of 2025), Determination of Tariff for Distribution for FY 2025-26, dt 30-06-2025, effective 01-07-2025, p.16. Open the order
LT VMiscellaneous / general purpose (commercial)Verified
bimonthly consumption <= 100 units
| Units | Rate |
|---|---|
| 1–100 | ₹6.65 /kWh |
bimonthly consumption > 100 units (rate on ALL units)
| Units | Rate |
|---|---|
| All units | ₹10.45 /kWh |
Fixed charge: per kW per month, by connected load All units: ₹110; All units: ₹332; All units: ₹608
Schedule wording: 'Above 100 units (for all units)'. GoTN's one-year subsidy for this category (6.45 / 10.15 payable) ended 30-06-2026.
Source: TNERC Suo-motu Order No. 6 of 2025 (T.O. No. 6 of 2025), Determination of Tariff for Distribution for FY 2025-26, dt 30-06-2025, effective 01-07-2025, p.17; Order 4/2026 sec XI(ii) p.28. Open the order
LT VIConstruction activities and temporary purposesVerified
| Units | Rate |
|---|---|
| All units | ₹13.25 /kWh |
Fixed charge: ₹608 per kW per month
Source: TNERC Suo-motu Order No. 6 of 2025 (T.O. No. 6 of 2025), Determination of Tariff for Distribution for FY 2025-26, dt 30-06-2025, effective 01-07-2025, p.17. Open the order
LT VIIEV charging stationsRead once
EV charging: public stations, and, if the consumer opts, a separate service for own consumption within an existing premises (smart meter with ToD and AMR) (para 3.2.17.4).
06:00-09:00 and 18:00-22:00
| Units | Rate |
|---|---|
| All units | ₹9.75 /kWh |
09:00-16:00
| Units | Rate |
|---|---|
| All units | ₹6.50 /kWh |
16:00-18:00 and 22:00-06:00
| Units | Rate |
|---|---|
| All units | ₹8.10 /kWh |
Fixed charge: per kW per month, by connected load All units: ₹55; All units: ₹165; All units: ₹304
Energy rate depends on time slot; fixed charge on connected load. The schedule prints slots and load bands side by side in one table.
Source: TNERC Suo-motu Order No. 6 of 2025 (T.O. No. 6 of 2025), Determination of Tariff for Distribution for FY 2025-26, dt 30-06-2025, effective 01-07-2025, p.17. Open the order
Tamil Nadu bill questions
How much is the electricity bill for 100 units in Tamil Nadu?
About ₹0.00 for 200 units (about ₹0 a month) in a 2-month bill, using the current TNERC tariff. Urban, single phase. Electricity duty and the monthly fuel surcharge are not included.
What will 200 or 300 units cost in Tamil Nadu?
Roughly ₹940.00 for 400 units (about ₹470 a month), and ₹2,880.00 for 600 units (about ₹1,440 a month). Use the calculator above for your exact units and load.
Are Tamil Nadu domestic slabs telescopic?
The rate table depends on your total consumption: cross the threshold and a different table applies to the whole bill. Within each table, slabs are telescopic.
How often are Tamil Nadu electricity bills issued?
Homes are billed every two months. Enter the units for one billing period.
Which tariff order are these Tamil Nadu rates from?
TNERC Suo-motu Order No. 6 of 2025 - Determination of Tariff for Distribution for FY 2025-26 (CPI-linked revision under T.O. No. 7 of 2022), dated 30 June 2025, in force from 1 July 2025. A link to the PDF is in the sources box on this page.
What does this estimate leave out?
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.
Is TNEB the same as TNPDCL?
TNEB is the old Tamil Nadu Electricity Board. TNPDCL now supplies and bills homes in Tamil Nadu, so a “TNEB bill” today is a TNPDCL bill.
Where is the consumer number on my Tamil Nadu electricity bill?
The name differs by discom. TNPDCL: Service connection number. The table on this page shows where each discom prints it, when its official pages say so.
Where to find your consumer number
Your bill shows a number that identifies your connection. In Tamil Nadu the discom calls it:
| Discom | Name on the bill | Digits | Where to find it | Source |
|---|---|---|---|---|
| TNPDCL | Service connection number | 11, printed with hyphens | On the left, below Section, Circle and Distribution, in large print. Also on the meter card and receipts. | TNPDCL: To know about Service Connection Number format (guid |
From the discoms’ own websites, bill guides and sample bills, read on 17 October 2026. Where the source is a sample bill, we read only its layout: the label, the place and the number of digits. A dash means the official page we read does not say. Never share your consumer number with an unknown caller or app.