Electricity Slab Protector
Know the jump before it hits your bill
Current meter reading minus the "previous reading" printed on last month's bill.
What eats your units? (per hour)
Example: cutting AC use by 2 hours/day saves ≈ 72 units a month — often a full slab.
The Ultimate Guide
Why one extra unit can cost thousands
Pakistan's residential tariff is slab-based, and some slabs are cliff-edged: cross the boundary and the higher rate applies to far more of your consumption, so the bill jumps sharply rather than gradually. The worst cliff is the 200-unit protected limit — exceeding it even once removes your protected-consumer status, and you must stay under 200 units for six consecutive months to get it back.
How the protector works
Enter the units consumed so far (current meter reading minus last month's closing reading) and the day of your billing cycle. The tool projects your month-end consumption at your current pace, warns you if you'll cross a slab boundary, shows the exact rupee jump, and gives a safe daily unit budget for the rest of the month.
Practical ways to shed units
A 1.5-ton inverter AC uses roughly 1.2 units per hour — trimming two hours a day saves about 72 units a month, often an entire slab. Running heavy appliances (iron, washing machine, water pump) in fewer, batched sessions also helps. Check the appliance table for what each device draws.