How to Use This Calculator
- Select your power distribution company: Choose LESCO, IESCO, K-Electric, etc.
- Enter monthly units: Record the total kWh units indicated on your meter reading.
- Inspect cost drivers: View how slab rates, fuel adjustment surcharges, and sales taxes contribute to the final bill.
Formula and Calculation Steps
Base Energy Cost = Σ (Units in Slab × Slab Rate)
FPA Surcharge = Units × FPA per unit
Electricity Duty = (Base Energy + FPA) × 1.5%
GST (Units > 200) = (Base Energy + FPA + Duty) × 18%
Total Bill = Base Energy + FPA + Duty + GST + TV Fee (Rs. 35)Worked Examples and Reference Table
| Monthly Units | Status | Base Energy | Taxes & FPA | Estimated Bill |
|---|---|---|---|---|
| 50 Units | Protected | Rs 198 | Rs 213 | Rs 411 |
| 100 Units | Protected | Rs 585 | Rs 394 | Rs 979 |
| 200 Units | Unprotected | Rs 3,943 | Rs 795 | Rs 4,738 |
| 300 Units | Unprotected | Rs 6,657 | Rs 2,569 | Rs 9,226 |
| 500 Units | Unprotected | Rs 13,384 | Rs 4,510 | Rs 17,894 |
Frequently Asked Questions
How are residential electricity bills calculated in Pakistan?
NEPRA enforces a uniform nationwide residential tariff across all DISCOs. Your bill consists of base energy charges calculated via progressive slabs, monthly Fuel Price Adjustments (FPA), 1.5% Electricity Duty, Rs. 35 PTV fee, and 18% GST (if consumption exceeds 200 units).
What is a "Protected Consumer" in Pakistan electricity?
A residential consumer is classified as protected if their monthly consumption has remained under 200 units for the preceding six consecutive months. Protected consumers enjoy subsidized lifeline base tariffs.
What is Fuel Price Adjustment (FPA)?
FPA is a variable monthly surcharge determined by NEPRA reflecting variations in actual crude, coal, and RLNG fuel import costs incurred by power plants compared to the reference generation benchmark.
Does K-Electric use the same tariff as LESCO or IESCO?
Yes. Under the government's uniform national tariff policy, basic residential consumer slabs and GST/ED rules are aligned across all DISCOs and K-Electric.
Why does crossing 200 units cause a sudden jump in the bill?
Crossing 200 units loses protected consumer status and triggers 18% General Sales Tax (GST) across the entire bill, causing a disproportionate total cost surge.