What is the difference between on-grid, hybrid and off-grid?

On-grid runs on net metering and shuts off during load-shedding. Hybrid adds a battery for backup and evening self-consumption. Off-grid runs fully on solar and battery with no grid connection.

Solar System Calculator . Estimate Your Home Solar in Minutes

Q: Do I have to upload my bill?

No. The calculator estimates from your appliances only. Entering last month's units makes the result more accurate.

Find out exactly how many kilowatts of solar your home needs, your estimated monthly savings, and your environmental impact — free, and without uploading a single bill. Just pick your appliances and get an instant system size, savings breakdown, and CO₂ impact tailored for Pakistani homes.

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Raj Solar · Free Estimate

Home Solar System Calculator

Pick the appliances in your home and find out in seconds how many kilowatts of solar you need, how much you'll save every month, and your impact on the environment. Built on real Pakistani usage numbers — no bill upload required.

What's in your home?

Set the quantity and daily usage hours. Defaults are already realistic.

System type

City

Electricity rate (PKR / unit) Edit to match your bill — savings are estimated on this rate.

Last month's units (optional) If you know it, enter it — we'll tune the estimate to your real bill for a more accurate result.

Frequently asked questions

How many kW solar system do I need for my home?

It depends on your daily electricity usage. A typical Pakistani home (fans, lights, fridge, 1–2 ACs) needs a 5kW to 10kW system. The calculator above works out the exact size from your actual appliances.

What's the difference between on-grid, hybrid and off-grid?

On-grid runs on net metering and shuts off during load-shedding. Hybrid adds a battery so power stays on during outages and you can use your morning generation in the evening. Off-grid runs fully on solar and battery with no grid connection at all.

How much can I save every month with solar?

Savings depend on your electricity rate and usage. The calculator shows your estimated monthly saving based on your units and current rate.

Do I have to upload my bill?

No. The calculator estimates from your appliances only. If you enter last month's units, the result becomes more accurate.

How long does a solar installation take?

A typical home solar installation in Pakistan takes 1 to 3 days depending on system size and roof type. After installation, net metering approval from your electricity company (like K-Electric or LESCO) can take 4 to 8 weeks.

Is solar worth it in Pakistan in 2026?

Yes — with electricity rates above PKR 40 per unit, most home solar systems pay back their cost in 3 to 5 years. After that, savings are pure profit for the next 20+ years of panel life.

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