Home / Engineering Tools / Home Owner Calculators
Solar System Size & Savings
What size solar system do you need, how much will it cost and how fast does it pay back? Calculator for on-grid and hybrid systems in Pakistan and AJK.
Loading the calculator… (JavaScript is needed)
About this calculator
Enter the units on your electricity bill to see the solar system size, number of panels, roof space, cost and payback — for on-grid (net billing) or hybrid systems with battery backup.
How it's calculated
- Size (kW) = monthly units ÷ 150 (typical generation per kW in northern Pakistan)
- Cost = kW × installed price + battery kWh × battery price
- Payback = cost ÷ monthly saving
How many units does a 10 kW solar system make?
About 1,300–1,500 units per month in AJK and northern Punjab, less in winter.
Results are calculated from the values you enter using standard formulas. Download the PDF to keep a record. For certified testing, design or construction, talk to our engineers.
Need an engineer for your project?
Testing, design and construction across Azad Kashmir & Punjab. Call or WhatsApp us.