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Tamil Nadu Electricity Tariff, July 2026: What Changed and What Hasn’t
As of July 2026, Tamil Nadu households are still billed on the FY 2025-26 schedule (TNERC Suo-motu Order No. 6 of 2025, in force since 1 July 2025) — the annual inflation-based revision that was scheduled to take effect on 1 July 2026 has not yet been notified. What did change this year is the subsidy: from FY 2026-27 the Tamil Nadu government's free-electricity allowance rises to 200 units per bi-monthly cycle for households consuming up to 500 units in the cycle. Here is exactly what that means for your next TNPDCL (TANGEDCO) bill.
The rates in force right now (and since July 2025)
TNERC's Order No. 6 of 2025 (30 June 2025, effective 1 July 2025) set the current LT-IA domestic schedule: no fixed charge, and telescopic energy rates from ₹4.95 per unit on the first slab up to ₹12.15 on the highest, on monthly-equivalent bands of 0–200, 201–250, 251–300, 301–400, 401–500 and 500+ units (TNPDCL bills bi-monthly, so the printed bands are double these). Electricity duty of 5% applies on the energy charge. The full current schedule, with slab-by-slab detail, is on our TNPDCL tariff page — that page is regenerated from the order data, so it stays current if rates move.
What actually changed in 2026: free units expanded to 200
By G.O. (Ms) No. 50 (10 May 2026), given effect by TNERC Order No. 5 of 2026 (26 May 2026), the Government of Tamil Nadu's free-electricity scheme for FY 2026-27 works like this:
| Your bi-monthly consumption | Free units per cycle |
|---|---|
| Up to 500 units | 200 units free |
| Above 500 units | 100 units free |
Because the LT-IA slabs are telescopic and the free units are the cheapest ones, the rupee value of the subsidy depends on your total usage — and crossing the 500-unit bi-monthly line doesn't just halve your free units, it does so exactly when your marginal rate is climbing. A household at 490 bi-monthly units gets a noticeably smaller bill than one at 520, out of proportion to the 30 extra units. If you hover near the threshold, that is worth managing.
The revision that hasn't arrived yet
Order No. 6 of 2025 itself states that the FY 2025-26 fixed and energy charges "shall undergo an inflation based adjustment" effective 1 July 2026, under the multi-year tariff framework of Order No. 7 of 2022. As of late July 2026, no order carrying the adjusted figures has appeared on TNERC's tariff-orders index — the most recent tariff order remains the May 2026 subsidy order. Going by the framework's past working, when the adjustment is notified it should be an inflation-indexed single-digit-percent move rather than a restructuring, and bills raised after its effective date would use the new rates. We track the TNERC index and update our tariff data from the order PDF itself when it publishes — not from press reports, which have mis-dated TN revisions before.
How to check a July 2026 TNPDCL bill
- Confirm the cycle. TNPDCL bills bi-monthly; the assessment shows roughly 60 days of consumption. All slab bands on the bill are the bi-monthly ones.
- Check the free units line. ≤500 units in the cycle should show 200 units free; above 500, 100 units. If a ≤500-unit bill shows only 100 free units after the FY 2026-27 subsidy took effect, that is worth a complaint.
- Re-compute the total. Enter your units in the Tamil Nadu bill calculator with the Government Subsidy box ticked — it applies the current TNERC slabs, the 5% duty and the free-unit rule, and shows the itemised result to compare against the printed bill.
Frequently asked questions
Did Tamil Nadu electricity rates increase in July 2026?
How many free electricity units does Tamil Nadu give in 2026?
What is the current TNEB rate per unit for domestic consumers?
Why does my TNEB bill jump when I cross 500 units?
Is TANGEDCO now called TNPDCL?
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General guidance based on publicly available tariff orders and regulations; specifics vary by state, DISCOM and consumer category. Verify against your DISCOM's official schedule or your printed bill.