Estimate your electricity bill
Summer AC bills can be a shock. This electricity bill calculator shows how your bill is built: units are charged slab by slab, then fixed charges and electricity duty are added. Enter your meter readings (or units) and the rates printed on your bill, and you'll see the total, the cost per unit and exactly which slab is pushing it up. The appliance estimator helps you find where the units go.
How to use it
- Enter your meter readings or the units used.
- Copy the slab limits and rates, fixed charge and duty from your last bill (the pre-filled values are only an example).
- See the bill and the slab-by-slab breakdown.
How telescopic slabs work
With slabs of ₹3 up to 100 units, ₹5 up to 300 and ₹7 above, a 350-unit month costs 100 × 3 + 200 × 5 + 50 × 7 =₹1,650 before fixed charges and duty. Only the units inside each slab pay that slab's rate — crossing into a higher slab doesn't reprice the earlier units (some discoms do use non-telescopic billing; check your tariff).
Example
A family uses 250 units in a month with the example rates: 100 × ₹3 + 150 × ₹5 = ₹1,050 energy charge, ₹100 fixed charge and 5% duty (₹52.50) — about ₹1,203, or ₹4.81 per unit. Running the AC two hours less each day saves roughly 90 units — mostly from the most expensive slab. Note your meter reading on the same date each month in the online notepad to spot unusual jumps early.