☀️

Solar ROI Calculator

Find out if solar panels make financial sense for your home.

kW

Recommended: 4 kW based on your usage

🔬 How We Calculate Solar ROI

1

System Production

1 kW produces ~130 units/month in Pakistan (avg 5 peak sun hours × 30 days × 0.85 efficiency).

2

Annual Degradation

Solar panels degrade ~0.5% per year. We factor this into 25-year projections for realistic estimates.

3

Rising Tariffs

Pakistan's electricity tariffs rise 8-15% annually. Solar savings increase each year as grid rates climb.

☀️ Maximize Your Solar Investment

📐 Right-Size Your System

Don't over-invest. Match your system size to your consumption. Net metering credits are paid at lower rates than what you buy at.

🧹 Keep Panels Clean

Dusty panels lose 15-25% efficiency. Clean them weekly or install an auto-wash system. Return on cleaning is enormous.

📋 Apply for Net Metering

Register with your DISCO for net metering. It takes 2-4 weeks. Without it, your excess generation is wasted.

🔋 Battery: Optional

With net metering, batteries aren't necessary for savings. Only add batteries if you need backup during outages.

Frequently Asked Questions

How much can solar save on my electricity bill?
A well-sized solar system can reduce your DISCO bill by 70-100%. Net metering allows you to sell excess units back to the grid, potentially zeroing out your bill.
What size solar system do I need?
Divide your monthly units by 120-130. For example, if you use 500 units/month, you need approximately a 4 kW system. This calculator does that math for you.
How long does solar take to pay back in Pakistan?
Typical payback is 3-5 years depending on system size, electricity rates, and net metering. After payback, you enjoy free electricity for 20+ more years.
Is net metering available in Pakistan?
Yes, NEPRA allows net metering for solar systems up to 1 MW. Your DISCO installs a bidirectional meter and you get credits for exported units at a determined rate.
What about cloudy days and winters?
Pakistan averages 5-6 peak sun hours even in winter. Cloudy days reduce output by 30-50%, but annual averages remain strong. This calculator accounts for seasonal variation.