Vehicle & Battery Specifications
Electricity Tariff & Slabs (NEPRA / DISCOs)
Do not let vehicle charging get mixed with home appliances. Install a sub-meter and scan it daily with Read Meter camera OCR to maintain exact consumption records.
Open Camera ScannerElectric Vehicle Charging Math in Pakistan: Complete 2026 Guide
With petrol hovering at Rs 260–280 per liter, electric two-wheelers (Yadea, Metro, Crown, Road Prince) and passenger electric vehicles (Honri Ve, GiGi EV, Deepal S07, BYD Atto 3, MG4) offer game-changing savings for Pakistani commuters.
However, calculating the true running cost requires understanding AC-to-DC conversion efficiency,NEPRA domestic tariff slabs, and the dreaded 200-unit protected slab penalty cliff.
Cost Per Kilometer (PKR) = (Total Units Consumed × Tariff Rate) ÷ Real-World Range (km)
Why Charger Efficiency Matters: The 15% Heat Loss
When you plug an electric bike or EV into a 220V wall socket, the on-board charger or external adapter must rectify AC alternating grid current into DC direct current to fill the chemical battery cells.
- Slow Portable Adapters (E-Bikes): Operate at roughly 82% to 86% efficiency. If your battery requires 1.20 kWh of direct energy, the meter actually records approximately 1.41 to 1.46 kWh.
- Home Wallbox AC Chargers (7.0 kW): High-grade Level 2 wallboxes achieve 90% to 92% efficiency.
- DC Fast Chargers (Motorway Stations): Provide direct high-voltage DC to the battery, achieving 93% to 95% efficiency, but at a premium commercial tariff (~Rs 75/kWh).
Side-by-Side Comparison: Electric vs Petrol Running Costs (Pakistan)
| Vehicle Type | Energy Capacity | Real Range | Cost Per Full Tank / Charge | Running Cost / KM | Monthly Fuel Cost (1,000 km) |
|---|---|---|---|---|---|
| 70cc Petrol Bike | 9 Liter Tank (Rs 260/L) | ~45 km / Liter | Rs 2,340 | Rs 5.78 / km | Rs 5,780 |
| E-Bike (Yadea / Metro) | 1.44 kWh Battery | ~60 km | Rs 59 (at Rs 35/unit) | Rs 0.98 / km | Rs 980 (Save Rs 4,800!) |
| 1.3L Petrol Sedan / Hatch | 35 Liter Tank (Rs 260/L) | ~12 km / Liter | Rs 9,100 | Rs 21.67 / km | Rs 21,670 |
| Honri Ve / Mini EV | 18.6 kWh LFP | ~180 km | Rs 723 (at Rs 35/unit) | Rs 4.02 / km | Rs 4,020 (Save Rs 17,650!) |
| Deepal S07 / BYD Atto 3 | 60.5–66.8 kWh | ~420 km | Rs 2,540 (at Rs 38 off-peak) | Rs 6.05 / km | Rs 6,050 (Save Rs 15,620!) |
The NEPRA 200-Unit Protected Slab Trap
Under NEPRA regulations, households consuming under 200 units enjoy the subsidized protected tariff (~Rs 22/kWh including taxes). If your monthly home consumption is 170 units and you purchase an electric bike that adds 40 units of charging per month, your total reaches 210 units.
The consequence is severe: Breaching 200 units by just 10 units terminates your protected status for 6 consecutive months, forcing every single kilowatt-hour in your home to be billed at unprotected rates (Rs 35–43/unit), inflating your bill by Rs 4,000 to Rs 8,000+!
Solution: If you live in a protected household, install a separate dedicated utility connection or digital sub-meter for vehicle charging, or utilize daytime solar generation.
Frequently Asked Questions (FAQs)
Track Your Electric Sub-Meter with 1-Click OCR
Never guess your vehicle charging consumption. Point your phone camera at your digital sub-meter or main utility meter, and Read Meter automatically records the kWh count and calculates running monthly costs.