How does the 100 free units scheme work in Tamil Nadu TNEB bills?

Under the Tamil Nadu State Government power subsidy scheme, every domestic consumer (LT Tariff I-A) gets the first 100 units 100% free of charge per bi-monthly (60-day) billing cycle.

What is 1 unit electricity cost in Tamil Nadu?

For consumption up to 500 units bi-monthly, units 101-200 cost ₹2.25/unit (net of ₹2.25 subsidy), units 201-400 cost ₹4.50/unit, and units 401-500 cost ₹6.00/unit. If total bi-monthly consumption exceeds 500 units, higher slab rates apply (up to ₹11.00/unit for usage above 1000 units).

Are there fixed connection charges for TNEB domestic electricity connections?

No. TNERC abolished fixed monthly connection charges for LT Tariff I-A Domestic connections in recent tariff revisions.

What is the billing frequency for TNEB TANGEDCO in Tamil Nadu?

TANGEDCO reads meters and generates electricity bills on a bi-monthly basis (once every 2 months / 60 days).

Published TNERC Tariff Orders • FY 2024-26

TNEB / TANGEDCO Bill Calculator Tamil Nadu

Calculate your bi-monthly TNEB electricity bill across Chennai, Coimbatore, Madurai, Tiruchirappalli, and all Tamil Nadu districts with exact TNERC Low Tension Tariff I-A slab rates and 100 free units state subsidy.

TNERC Tariff Order No. 7 Verified Engine

TNEB / TANGEDCO Electricity Bill Calculator

✓ 100 Free Units Subsidy Active

1. Billing Frequency Cycle

2. Consumption Units (Bi-Monthly kWh)

Quick Presets (Bi-Monthly):

Net Payable TNEB Bill

₹1,175

Bi-Monthly 60-Day Billing Total

TN State Subsidy Benefit

- ₹705

First 100 Units 100% Subsidized

Effective Per Unit Cost

₹2.94 / kWh

Net Payable ÷ Total kWh

Fixed Monthly Charge

₹0.00

TNERC Abolished Fixed Charges

📊 TNERC Low Tension Tariff I-A Slab Breakdown

Bi-Monthly Slab Tier	Base Rate	Govt Subsidy	Net Rate	Units Billed	Net Slab Amount
0 - 100 kWh (Bi-Monthly Free)	₹4.70	- ₹4.70	₹0.00	100 kWh	₹0
101 - 200 kWh	₹4.70	- ₹2.35	₹2.35	100 kWh	₹235
201 - 400 kWh	₹4.70	₹0.00	₹4.70	200 kWh	₹940
401 - 500 kWh	₹6.25	₹0.00	₹6.25	0 kWh	₹0

🧾 Step-by-Step Calculation Audit Proof

Slab 1 (0 - 100 kWh (Bi-Monthly Free)): 100 units

100 kWh × (₹4.70 - ₹4.70 Govt Subsidy)

₹0

Slab 2 (101 - 200 kWh): 100 units

100 kWh × (₹4.70 - ₹2.35 Govt Subsidy)

₹235

Slab 3 (201 - 400 kWh): 200 units

200 kWh × ₹4.70/kWh

₹940

Fixed Charges (TNERC Abolished for LT Domestic)

₹0.00 / month

₹0

Tariff Authority Citation: TNERC Schedule of Tariff for Low Tension Tariff I-A Domestic (July 2024 Active) (TNERC Order No. 7 of 2022 & TANGEDCO CPI Escalation Lr. No. 2024).

Verify Official TNERC Tariff PDF ↗

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How TNEB TANGEDCO Electricity Bill is Calculated in Tamil Nadu

TANGEDCO calculates electricity bills on a bi-monthly cycle (every 60 days) using TNERC Low Tension Tariff I-A domestic rates. The Tamil Nadu State Government grants 100 free units per bi-monthly cycle to all domestic consumers.

Example Calculation for 400 Units Bi-Monthly:

First 100 units (0 - 100 kWh): 100 units × ₹0.00 = ₹0.00 (FREE)
Next 100 units (101 - 200 kWh): 100 units × ₹2.25 (net after subsidy) = ₹225.00
Next 200 units (201 - 400 kWh): 200 units × ₹4.50 = ₹900.00
Total Net Payable Bill: ₹0 + ₹225 + ₹900 = ₹1,125.00

TNERC LT Tariff I-A Domestic Slab Rates (FY 2024-26)

Bi-Monthly Slab Tier	Base Rate per kWh	Govt Subsidy	Net Consumer Rate
0 - 100 units	₹4.50 / kWh	- ₹4.50 (100% Free)	₹0.00 / kWh
101 - 200 units	₹4.50 / kWh	- ₹2.25	₹2.25 / kWh
201 - 400 units	₹4.50 / kWh	₹0.00	₹4.50 / kWh
401 - 500 units	₹6.00 / kWh	₹0.00	₹6.00 / kWh
Above 500 units Tier (501 - 600)	₹8.00 / kWh	₹0.00	₹8.00 / kWh
601 - 800 units	₹9.00 / kWh	₹0.00	₹9.00 / kWh

🔍 How to Check TNEB Bill Online

Visit the TANGEDCO Web Portal (tangedco.gov.in).
Go to Billing Services $\rightarrow$ Quick Pay / Check Bill.
Select Region Code and enter your 12-digit Service Number.
View your bi-monthly consumption, slab breakdown, and payment status.

💳 How to Pay TNEB Bill Online

Log in to TANGEDCO Net Portal or TNEB Mobile App.
Enter Service Number and consumer name.
Select payment channel: UPI, Net Banking, Credit/Debit Card.
Download your official TANGEDCO transaction receipt.

Loading calculation engine...

Bi-Monthly Slab Tier

Base Rate

Govt Subsidy

Net Rate

Units Billed

Net Slab Amount

0 - 100 kWh (Bi-Monthly Free)

₹4.70

- ₹4.70

₹0.00

100 kWh

₹0

101 - 200 kWh

₹4.70

- ₹2.35

₹2.35

100 kWh

₹235

201 - 400 kWh

₹4.70

₹0.00

₹4.70

200 kWh

₹940

401 - 500 kWh

₹6.25

₹0.00

₹6.25

0 kWh

₹0

How TNEB TANGEDCO Electricity Bill is Calculated in Tamil Nadu

Example Calculation for 400 Units Bi-Monthly:

First 100 units (0 - 100 kWh): 100 units × ₹0.00 = ₹0.00 (FREE)
Next 100 units (101 - 200 kWh): 100 units × ₹2.25 (net after subsidy) = ₹225.00
Next 200 units (201 - 400 kWh): 200 units × ₹4.50 = ₹900.00
Total Net Payable Bill: ₹0 + ₹225 + ₹900 = ₹1,125.00

TNERC LT Tariff I-A Domestic Slab Rates (FY 2024-26)

Bi-Monthly Slab Tier	Base Rate per kWh	Govt Subsidy	Net Consumer Rate
0 - 100 units	₹4.50 / kWh	- ₹4.50 (100% Free)	₹0.00 / kWh
101 - 200 units	₹4.50 / kWh	- ₹2.25	₹2.25 / kWh
201 - 400 units	₹4.50 / kWh	₹0.00	₹4.50 / kWh
401 - 500 units	₹6.00 / kWh	₹0.00	₹6.00 / kWh
Above 500 units Tier (501 - 600)	₹8.00 / kWh	₹0.00	₹8.00 / kWh
601 - 800 units	₹9.00 / kWh	₹0.00	₹9.00 / kWh