Adani Electricity tariff — Mumbai slab rates and bill components
This is the full breakdown of Adani Electricity Mumbai's approved tariff for FY 2024-25, with every charge explained and tied back to the MERC tariff order that authorises it. We refresh this page every time MERC issues a fresh order or true-up.
| Slab / Consumption | Rate | Notes |
|---|---|---|
| 0 – 100 units (telescopic) | ₹4.03 / kWh | Lifeline lifeline-like slab. Excludes FAC, duty. |
| 101 – 300 units | ₹6.20 / kWh | Most-used slab for AEML residential. |
| 301 – 500 units | ₹8.05 / kWh | Tariff jump is meaningful — slab management saves money. |
| Above 500 units | ₹11.27 / kWh | High-consumption slab; consider solar net-metering. |
| Wheeling Charge (all units) | Slab-matched + Energy Charge | Charged in parallel to Energy Charge; see full tariff page. |
| Fixed Charge (sanctioned load up to 0.5 kVA) | ₹128 / month | Per-month subscription, paid regardless of consumption. |
| Electricity Duty (residential) | 16% of (Energy + Fixed Charges) | State-level levy under Maharashtra Electricity Duty Act 2016. |
LT-I residential tariff — full slab table
The LT-I tariff applies to single-phase and three-phase residential connections with sanctioned load up to 65 kVA. The table at the top of this page lists the per-unit Energy Charge for each slab. AEML's residential tariff is telescopic, meaning consumption is taxed at the rate of the slab in which it falls — the first 100 units are billed at the 0-100 rate even if your total consumption is 600 units.
There is one important exception. For households whose total monthly consumption exceeds 1,000 units, the residential slab no longer applies — the connection is reclassified to the LT-VI "continuous process" category for that billing month. This is rare for typical Mumbai apartments and almost exclusive to large bungalows running multiple ACs and electric vehicle chargers simultaneously.
LT-II commercial tariff — what shops and small offices pay
Commercial connections in AEML's territory fall under LT-II, sub-categorised by sanctioned load. The most common sub-category is LT-II(A) for connections up to 20 kW. The Energy Charge is non-telescopic — the rate of the slab in which total consumption lands is applied to every unit, not graduated like residential.
This non-telescopic structure means small commercial customers should watch their total consumption: a coffee shop at 19 units crossing into the next slab can pay meaningfully more per kWh than it did at 18 units. We track current LT-II slab boundaries and rates and update this section on each MERC order.
Time-of-Day (ToD) tariff — peak, normal, off-peak
ToD is mandatory for HT consumers (above 1 MVA) and optional for LT consumers whose premise has a smart meter. The three blocks are: Peak — 6 AM to 9 AM and 6 PM to 10 PM on weekdays (surcharged); Normal — most other weekday hours (no adjustment); Off-Peak — 10 PM to 6 AM daily and Sunday all day (discounted).
For an LT smart-meter household, ToD opt-in is one of the few financial decisions where the analytics is straightforward: pull twelve months of 15-minute consumption from the app, multiply each interval by the ToD-adjusted rate vs. the flat-rate equivalent, and the spreadsheet tells you whether ToD saves you money. If your evening peak load is unusually high (multiple ACs from 7-10 PM), ToD costs more; if your washing machine and dishwasher run after 10 PM, ToD saves.
Fuel Adjustment Charge — what it is and how to read it
FAC is a quarterly pass-through that captures changes in AEML's cost of generation and procured power. MERC reviews the formula but does not approve the monthly amount in advance; AEML self-computes and shows the calculation on the bill PDF. The numbers can shock new customers: in months when imported coal prices spiked in 2022-23, FAC added 10-15% to bills.
The current FAC bracket (Q4 FY 2024-25) is in the range of +₹0.40 to +₹0.55 per kWh — meaning every unit you consume has an extra rupee-ish on top of the slab rate. We display the latest FAC figure on this page; in the bill PDF, it is the line labelled "Fuel Adjustment Charge" or "FAC".
Electricity Duty and TOSE — Maharashtra state levies
The Maharashtra Electricity Duty Act 2016 levies an Electricity Duty on every unit consumed. The rate is set by category: residential 16%, commercial 21%, industrial 9.3%, agricultural 0%, EV charging 9%. The base for the percentage is the Energy Charge plus the Fixed Charge — not including FAC or Wheeling.
TOSE (Tax on Sale of Electricity) is a smaller state levy at approximately 4-6 paise per kWh, applied across all categories. It is itemised on the bill alongside the Electricity Duty.
How tariff changes are announced and when they take effect
MERC issues a multi-year tariff order roughly every 5 years (currently MYT 2020-25, with a true-up filed annually). Mid-year revisions happen via true-up orders, which adjust for cost-recovery shortfalls or surpluses from previous years. The new rates typically take effect from the 1st of the month following publication.
If a tariff revision is announced mid-cycle, your first bill at the new rate will be partly at the old rate and partly at the new — AEML pro-rates the consumption by the number of days at each rate. Watch for the "tariff revision" notice on the bill itself; the breakdown is usually printed on the second page of the PDF.