TNEB bill calculator: old vs new tariff
Type the units on your TNEB (TNPDCL) bill. See what the same units cost under the new tariff and under each old tariff since 23 May 2016. For example, 500 units in a 2-month bill cost ₹1,570 now and ₹1,805 before 10 May 2026.
- 7 tariffs since 2016
- What a home pays after subsidy
- 2-month bills
Compare your bill
Bill for each tariff, 2-month bill
| Tariff period | 100 units | 200 units | 300 units | 400 units | 500 units | 600 units | 800 units | 1000 units |
|---|---|---|---|---|---|---|---|---|
| 10 May 2026 to today | ₹0 | ₹0 | ₹470 | ₹940 | ₹1,570 | ₹2,880 | ₹4,770 | ₹6,870 |
| 1 July 2025 to 9 May 2026 | ₹0 | ₹235 | ₹705 | ₹1,175 | ₹1,805 | ₹2,880 | ₹4,770 | ₹6,870 |
| 1 July 2024 to 30 June 2025 | ₹0 | ₹235 | ₹705 | ₹1,175 | ₹1,805 | ₹2,880 | ₹4,770 | ₹6,870 |
| 1 July 2023 to 30 June 2024 | ₹0 | ₹225 | ₹675 | ₹1,125 | ₹1,725 | ₹2,750 | ₹4,550 | ₹6,550 |
| 10 September 2022 to 30 June 2023 | ₹0 | ₹225 | ₹675 | ₹1,125 | ₹1,725 | ₹2,750 | ₹4,550 | ₹6,550 |
| 11 August 2017 to 9 September 2022 | ₹0 | ₹170 | ₹530 | ₹830 | ₹1,130 | ₹2,440 | ₹3,760 | ₹5,080 |
| 23 May 2016 to 10 August 2017 | ₹0 | ₹170 | ₹530 | ₹830 | ₹1,130 | ₹2,440 | ₹3,760 | ₹5,080 |
What a home pays, after the Tamil Nadu Government subsidy. Electricity tax is not included.
What each change did to a 2-month bill
- From 10 May 2026. 200 units: ₹235 to ₹0; 500 units: ₹1,805 to ₹1,570; 800 units: no change (₹4,770).
- From 1 July 2025. 200 units: no change (₹235); 500 units: no change (₹1,805); 800 units: no change (₹4,770).
- From 1 July 2024. 200 units: ₹225 to ₹235; 500 units: ₹1,725 to ₹1,805; 800 units: ₹4,550 to ₹4,770.
- From 1 July 2023. 200 units: no change (₹225); 500 units: no change (₹1,725); 800 units: no change (₹4,550).
- From 10 September 2022. 200 units: ₹170 to ₹225; 500 units: ₹1,130 to ₹1,725; 800 units: ₹3,760 to ₹4,550.
- From 11 August 2017. 200 units: no change (₹170); 500 units: no change (₹1,130); 800 units: no change (₹3,760).
More for Tamil Nadu
Questions
What changed in the new TNEB tariff?
From 10 May 2026, a home that uses up to 500 units in two months gets 200 units free. Above 500 units, 100 units stay free.
Why is my TNEB bill different from this?
This is the energy charge and any fixed charge in the tariff, after the Tamil Nadu Government subsidy. Your bill can also show electricity tax and arrears.
Are these 2-month bills?
Yes. TNPDCL bills homes every two months, and the slab limits are for two months.
Official orders
- 10 May 2026 to today: Tariff: TNERC T.O. No. 6 of 2025 (unchanged). Payable: TNERC Order No. 5 of 2026 (Additional tariff subsidy FY 2026-27) on GoTN G.O.(Ms) No.
- 1 July 2025 to 9 May 2026: TNERC Suo-motu T.O. No. 6 of 2025 (Determination of tariff for distribution FY 2025-26, TNPDCL)
- 1 July 2024 to 30 June 2025: TNERC Suo-motu T.O. No. 6 of 2024 (Determination of tariff for distribution FY 2024-25)
- 1 July 2023 to 30 June 2024: TNERC Suo-motu T.O. No. 6 of 2023 (Determination of tariff for distribution FY 2023-24)
- 10 September 2022 to 30 June 2023: TNERC Order No. 07 of 2022 in T.P. No. 1 of 2022 (corrigendum-updated version as on 20-09-2022)
- 11 August 2017 to 9 September 2022: TNERC Order in T.P. No. 1 of 2017 (Determination of tariff for generation and distribution)
- 23 May 2016 to 10 August 2017: Tariff: TNERC SMT Order No. 9 of 2014 (unchanged). Payable: TNERC Order No. 6 of 2016 (Provision of tariff subsidy FY 2016-17) on GoTN G.O.(
Payable (post-subsidy) LT IA rates for 12-12-2014 to 22-05-2016 are not stated in any official document found (only per-unit subsidy). Rates checked 15 October 2026.