Solar Savings Calculator
Estimate your ideal system size, installation cost, monthly savings, and payback period — based on live NEPRA tariff slabs and Karachi solar data.
🔢 Input Method
How This Calculator Works
Our calculator uses real-world data to give you the most accurate solar estimate possible.
Enter Your Bill
Input your current monthly electricity bill or unit consumption. We use the latest NEPRA tariff slabs to calculate your actual per-unit cost.
System Sizing
Based on Karachi's 5.5 peak sun hours and your consumption, we calculate the optimal solar panel system size in kilowatts (kW).
ROI & Payback
We estimate your installation cost, monthly savings, and payback period — factoring in net metering credits and system degradation over 25 years.
Common Questions
How accurate is this solar calculator?+
Our calculator uses live NEPRA tariff slabs, Karachi-specific peak sun hour data (5.5 hours), and current Tier-1 panel pricing from manufacturers like Longi and JA Solar. Results are within 5-10% of a professional site survey estimate.
What is net metering and how does it affect my savings?+
Net metering allows you to sell excess solar electricity back to the grid. Your bi-directional meter tracks what you consume and what you export. NEPRA credits the exported units against your future bills, maximizing your savings.
How much does a solar system cost in Pakistan in 2026?+
A typical residential system ranges from PKR 350,000 to PKR 1,500,000 depending on size (3kW to 15kW). Commercial systems for businesses start from PKR 2,000,000. Prices include Tier-1 panels, inverter, mounting, wiring, and net metering documentation.
How long does it take for solar panels to pay for themselves?+
Most residential systems in Karachi achieve payback within 3-5 years, depending on your current electricity bill and the system size. After payback, you enjoy 20+ years of essentially free electricity.