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ElectricBillTool India's Bill Calculator
Tamil Nadu • TNEB / TANGEDCO

TNEB Bill Calculator

Independent estimator for the TNEB / TANGEDCO bill. Apply the official 2025–26 TNERC bi-monthly slab rates, the free 100-unit subsidy, FAC and fixed charges to estimate your bill. Actual bill viewing / payment happens only on the official tnebnet.org portal.

Estimate TNEB bill Open official tnebnet.org

Independent third-party calculator — not affiliated with any DISCOM, electricity board or government body.

electricbilltool.com is an independent estimator. We do not display, fetch, or pay your actual bill, and we do not ask for any consumer / account number, OTP, or login details. To view or pay your actual TNEB / TANGEDCO bill, visit the official portal at www.tnebnet.org.

Calculate Your Electricity Bill

Pick your state, DISCOM and enter units — we do the math exactly the way your DISCOM does.

Connection Type
Input Mode

Tip: Your bill shows this as "units consumed" or "kWh".

Usually 1–5 kW for homes, 5–20 kW for shops.

Notes for TNEB / TANGEDCO:
  • Bi-monthly billing cycle common for domestic.
  • First 100 units free per bi-monthly cycle for eligible domestic.

TNEB / TANGEDCO domestic slabs (2025–26)

Effective 2025-07-01. Bi-monthly billing. Source: TNERC tariff order.

Slab (units / month) Energy rate (₹/unit)
1 – 100 ₹0.00
101 – 200 ₹2.35
201 – 400 ₹4.70
401 – 500 ₹6.30
Above 500 ₹8.40
Fixed charges
Slab-based
FAC / FPPCA
—
Electricity duty
6%
Telescopic
Yes

Sample TNEB bills

Domestic, 3 kW sanctioned load, no subsidy applied.

TNEB bill for 100 units

₹80

avg ₹0.80/unit

TNEB bill for 200 units

₹329

avg ₹1.64/unit

TNEB bill for 300 units

₹827

avg ₹2.76/unit

TNEB bill for 500 units

₹1,993

avg ₹3.99/unit

TNEB bill for 800 units

₹4,664

avg ₹5.83/unit

TNEB bill for 1000 units

₹6,445

avg ₹6.44/unit

TNEB bill — common questions

Answers to the most common electricity bill questions in India.

TNEB vs TANGEDCO — what is the difference?
After the 2010 reorganisation of the old TNEB (Tamil Nadu Electricity Board), the distribution business moved to TANGEDCO (Tamil Nadu Generation and Distribution Corporation) and transmission to TANTRANSCO. But everyday usage and the consumer portal still use the "TNEB" branding. So TNEB bill = TANGEDCO bill = EB bill.
How do I view or estimate my TNEB bill online?
To view or pay your actual bill, go to the official TNEB / TANGEDCO portal at tnebnet.org and enter your service connection number — only the official portal can show your real bill. To estimate the amount using official slab rates, use the independent calculator on this page.
How is TNEB bill calculated?
Tamil Nadu uses bi-monthly billing with a telescopic slab structure for domestic consumers. First 100 units per bi-monthly cycle are free for eligible domestic consumers (state subsidy). Beyond that, slab rates apply. See the slab table on this page or use the calculator above for your exact bill.
How to find my TNEB consumer number?
Your TNEB / TANGEDCO service connection number is printed at the top of every previous bill and on the meter sticker.
TNEB online payment vs TNEB bill check — what does this tool do?
This is a bill check & calculation tool — it shows you slab-by-slab how your bill is computed using official TNERC rates. To pay the bill, use tnebnet.org, BBPS, or your bank / UPI app. To view your actual unpaid bill, log in to tnebnet.org with your service connection number.