Calculate the ideal solar system size for your home or business in Pakistan. Enter your monthly electricity bill or electricity units, and our free Solar Calculator will instantly estimate the recommended system size, number of solar panels, inverter capacity, roof space, installation cost, monthly savings, and payback period. This calculator is designed using average sunlight conditions in Pakistan to provide quick and reliable estimates.

Solar System Size Calculator

How much solar system do you need?

Enter your monthly electricity usage (bill or units) below — panel count, system size (kW), and estimated impact will be calculated instantly.

From Bill (Rs)
From Units (kWh)
Units will be calculated based on your per-unit rate.
Average is 5–6 hours for most cities in Pakistan.
Average allowance for wiring, inverter, and dust losses.
3.2
kW system
Recommended solar system size
6
panels needed
17.6
daily units (kWh)
~38 ft²
roof space / panel row
PANEL LAYOUT PREVIEW
~0 kg CO₂ offset monthly
This is a rough estimate for guidance only. Roof orientation, shading, and an actual site survey by a local installer may change the final numbers.
Solar System Size Guide

What can each system size power?

A general reference for common solar system sizes and the typical loads they support.

System Size
Panels (approx)
Typical Load It Can Support
1 kW
2
2–3 fans, LED lights, a small fridge — one room or a small shop
2 kW
4
Above + TV, router, small water pump — small home essentials
3 kW
5
1 inverter AC (1 ton), fridge, fans, lights, TV — small home
5 kW
9
1–2 inverter ACs (1.5 ton), fridge, washing machine, full lighting — medium home
6 kW
11
2 ACs, all major home appliances — larger home
8 kW
14
2–3 ACs, water motor, full home + small home office
10 kW
18
3–4 ACs, deep freezer, water motor — large home, clinic, or small shop
15 kW
26
Multiple ACs, office equipment — small office or commercial unit
20 kW
35
Restaurant kitchen loads, multiple AC units, light machinery
25 kW
43
Mid-size commercial building, multiple shops or a small plaza
30 kW
52
Small factory unit, cold storage, workshop machinery
40 kW
69
Larger factory line, textile unit, big commercial complex
50 kW
86
Industrial unit or large commercial complex with heavy machinery
Panel counts assume 585 W panels. Actual load support depends on appliance ratings, run hours, and inverter capacity — use this as a starting reference, not a final design.
Solar Cost, Backup & Quote

Cost, backup & quote

Estimate the price and payback of your solar system, check battery backup and roof space, then send a quote request.

Your system

Enter the system size you’re planning (from the sizing calculator) and your current bill.

Assumes the system offsets this bill.

Cost & payback

Estimate the turnkey system cost, monthly savings, and how long it takes to pay for itself.

Turnkey price including panels, inverter, and installation.
Rs 0
estimated system cost
Rs 0
estimated monthly savings
0 yrs
payback period
Rs 0
net savings over 25 yrs

Battery backup & roof space

Optional checks — size a battery for backup power, or confirm your roof can fit the system.

Fans, lights, router, fridge — whatever must stay on during an outage.
0 kWh
battery capacity needed
—
approx modules
Rough usable, unshaded roof space for panels.
0 ft²
space required
0
panels (approx)
Fits comfortably

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Disclaimer: The results provided by this Calculate Solar System Size are estimates based on average solar irradiance, system efficiency, and electricity usage in Pakistan. Actual performance, installation cost, and energy production may vary depending on your city, roof orientation, weather conditions, shading, equipment quality, and local electricity tariffs.