Load & Backup Calculator
Size batteries for fans, fridge, lights, and load shedding backup.
Best for: Homes, apartments & shops
You get: Total W · Wh needed · 12/24/48V Ah · inverter VA · catalog matches
Size load shedding backup, solar storage, and e-bike packs in minutes. Every tool shows watts, Ah, voltage, real products, and a WhatsApp quote — built for Lahore, Karachi, Islamabad, and nationwide installs.
Start here — what do you need?
17 GW panels
Solar imports (2024 est.)
1.25 GWh
Battery imports (2024)
15–18%
Households with solar
Rising PKR/kWh
Grid tariff pressure
Tap a button to open the tool — each card shows who it's for and what results you'll get. Free PDF report and WhatsApp quote after every run.
Size batteries for fans, fridge, lights, and load shedding backup.
Best for: Homes, apartments & shops
You get: Total W · Wh needed · 12/24/48V Ah · inverter VA · catalog matches
Keep fiber and WiFi online during load shedding.
Best for: WFH, freelancers, students
You get: 12V Ah for router + ONT · product links
Estimate kW solar and panels from monthly units.
Best for: New rooftop solar buyers
You get: System kW · panel count · battery kWh
kWh storage for evening and load shedding.
Best for: Evening self-consumption
You get: Night storage kWh/Ah for hybrid inverters
Estimate km from voltage and Ah.
Best for: Commuters & delivery riders
You get: Km per charge from V & Ah
14 free tools for power, solar, and e-mobility — pick by category below.
Load shedding, UPS, WiFi & CCTV
Size batteries for fans, fridge, lights, and load shedding backup.
Best for: Homes, apartments & shops
You get: Total W · Wh needed · 12/24/48V Ah · inverter VA · catalog matches
See how long your existing battery will run your load.
Best for: Existing battery owners
You get: Estimated backup hours at your current load
Design parallel/series battery banks for inverters.
Best for: Multi-battery inverter banks
You get: Bank voltage, total Ah, kWh capacity
Match inverter VA/kVA to your total appliance load.
Best for: Home & office UPS installs
You get: Recommended inverter VA/kVA for your appliances
Keep fiber and WiFi online during load shedding.
Best for: WFH, freelancers, students
You get: 12V Ah for router + ONT · product links
Power DVR and cameras through outages.
Best for: Shops & home CCTV
You get: DVR + camera load · overnight recording hours
Rooftop kW, storage & bill savings
Estimate kW solar and panels from monthly units.
Best for: New rooftop solar buyers
You get: System kW · panel count · battery kWh
Monthly bill savings and payback estimate.
Best for: High electricity bills
You get: PKR/month savings · simple payback years
kWh storage for evening and load shedding.
Best for: Evening self-consumption
You get: Night storage kWh/Ah for hybrid inverters
Export credit vs battery investment.
Best for: Net-metered homes
You get: Export vs battery ROI comparison
E-bikes, range & PKR per km
Estimate km from voltage and Ah.
Best for: Commuters & delivery riders
You get: Km per charge from V & Ah
Lead to lithium upgrade benefits.
Best for: Lead → lithium upgrades
You get: Range & weight gains vs lead packs
Monthly PKR to charge your pack.
Best for: Monthly running cost planning
You get: PKR/month to charge your pack
PKR per km vs petrol rickshaw.
Best for: Delivery economics
You get: PKR/km vs petrol rickshaw
load Shedding
Despite grid improvements in major cities, scheduled and unscheduled outages still drive UPS and inverter demand across Punjab, Sindh, and KPK. Households plan for 2–6 hour backup windows; shops and freelancers often need 8–12 hours for routers and POS systems.
solar Adoption
Pakistan added an estimated 17 GW of solar panel imports in 2024 alone, with distributed rooftop capacity growing far faster than official net-metering records. HIES 2024–25 suggests roughly 15–18% of households now use some form of solar lighting or electricity.
battery Storage
IEEFA reports Pakistan imported about 1.25 GWh of batteries in 2024, with hybrid inverters and evening self-consumption replacing daytime-only solar export. LiFePO4 payback versus grid tariffs is often cited at 3–5 years for homes despite import duties.
residential Backup
Rising grid tariffs and falling lithium prices push families from tubular lead-acid to 12V/48V lithium for fans, fridge, and WiFi during load shedding. Typical home targets: 1–3 kWh for essentials, 5–15 kWh for AC-inclusive backup.
commercial Backup
Shops, clinics, and small offices combine solar + battery + generator for uptime. CCTV, fiber ONT, and POS loads are steady 24/7 draws—sizing often starts at 300–800 W continuous.
ebike Growth
E-bikes and e-rickshaws are among the fastest lithium adoption segments in urban Pakistan, with 36V/48V/60V packs replacing lead for range and weight savings.
lithium Adoption
Local assembly of lithium packs is expanding alongside Chinese imports. AmpereX focuses on LiFePO4 for solar, UPS, and e-mobility where cycle life and safety matter in hot climates.
Scenario pages with pre-filled loads — each links to the best matching calculator.
Backup Power for WiFi Router & Fiber ONT
Freelancers, students, and remote workers lose income when load shedding kills fiber and WiFi. Router + ONT loads are small (15–30 W) but need reliable 12V lithium for 8–12 hours.
WiFi & Router BackupHome Office Backup Power
Work-from-home setups need laptop, monitor, router, and often a fan running 4–6 hours per outage.
WiFi & Router BackupCCTV Backup During Load Shedding
Shops and homes with 4–8 cameras plus DVR typically draw 40–80 W continuous.
CCTV Backup CalculatorBackup for 500W Load
A ~500 W essential load (2 fans, fridge, TV, lights, router) for 4 hours needs about 2.3 kWh — typically 12V 200Ah LiFePO4 or 24V 100Ah with a 1–1.2 kVA inverter.
Load & Backup Calculator