What changed
On 10 May 2026, the Tamil Nadu government signed an order revising the domestic electricity subsidy. Eligible domestic consumers with bimonthly consumption of 500 units or less now get the first 200 units free, doubling the earlier 100-unit free quota.
Who qualifies
| Bimonthly usage | Free units |
|---|---|
| 500 units or less | 200 units (new scheme) |
| More than 500 units | 100 units (existing tariff continues) |
The threshold is based on your total bimonthly consumption, not a monthly average. If you cross 500 units in a two-month billing cycle even once, that cycle reverts to the old 100-unit-free structure with the steeper slab rates that apply above 500 units.
How much does it actually save?
Because TNEB billing is telescopic (see our slab guide), the saving isn't a flat amount — it depends on where your usage falls. As an example, a household using 325 units bimonthly would have paid roughly ₹822 under the old tariff; under the new scheme, that drops to roughly ₹587 — a saving of around ₹235 for that cycle. Use the calculator to see the exact figure for your own usage.
What's still pending
The government order confirmed the 200-unit-free threshold and the 500-unit eligibility cap. What it has not yet formally notified is the exact per-unit rate for the 201–500 unit band under the new scheme. Most independent estimates (including this calculator) carry over the previous slab rates for that band until TNEB/TNERC publishes the official gazette notification.
Not seeing the benefit on your bill?
- Confirm your bimonthly consumption is actually 500 units or below — check your last two readings
- Contact your local TANGEDCO/TNPDCL office for verification if you believe you qualify but it's not reflected
- You may be asked for supporting consumption documentation