Tamil Nadu EB Unit Rate and Free Units
Tamil Nadu domestic electricity billing is slab based, so there is no single fixed one-unit rate for every house. The final current bill depends on total bi-monthly units and the free-unit subsidy applied.
- Up to 500 bi-monthly units: this calculator applies 200 free units.
- Above 500 bi-monthly units: this calculator applies 100 free units.
- The payable amount is shown with energy charge, free-unit benefit, effective unit rate and slab details.