Estimate your Mumbai (Tata Power) home electricity bill from the official tariff: slabs, fixed charge, surcharges, duty and subsidy.
Quick answer
Tata Power Mumbai charges homes ₹1.90 a unit up to 100 units, ₹4.70 up to 300, ₹9.24 up to 500 and ₹10.24 above, plus a ₹2.40 wheeling charge on every unit, a fixed charge of ₹90–₹160 a month, FAC and electricity duty (MERC, FY 2026-27).
Rates last checked 9 November 2026 against official tariff orders. Values marked "see your bill" change month to month.
| Item | How it is worked out | Amount |
|---|
Mumbai (Tata Power) domestic slab rates
| Units per month | Rate per unit |
|---|---|
| 1–100 | ₹1.90 |
| 101–300 | ₹4.70 |
| 301–500 | ₹9.24 |
| Above 500 | ₹10.24 |
Mumbai has three electricity suppliers with different tariffs: Adani Electricity (suburbs), Tata Power (parts of the city and suburbs) and BEST (island city). Check which one bills you before using a calculator.
How to use this calculator
- Enter the units from your bill (current reading minus previous reading).
- Copy any monthly surcharge percentage from your latest bill. It changes every month.
- The result is an estimate. Meter rent, arrears, late fees, rebates and rounding are not included.
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Official sources
This calculator is built from official tariff orders and does not rely on third-party wording.