Solar panel installations have exploded in Pakistan, driven by load shedding, rising electricity tariffs, and falling panel costs. A well-sized rooftop system can pay for itself in 3–5 years and then generate free electricity for 20+ more years. But the ROI depends on several factors specific to your situation.
1. Your current electricity bill. The higher your bill, the faster the payback. Households spending PKR 10,000+ per month see returns in 3–4 years. Those spending PKR 3,000–5,000 may take 5–7 years.
2. System cost per kW. In 2024–25, installed solar costs in Pakistan range from PKR 80,000–130,000 per kW depending on panel brand (Longi, Jinko, Canadian Solar), inverter type (on-grid, hybrid, off-grid), and installer.
3. Your location's solar irradiance. Pakistan receives 4.5–6.5 peak sun hours per day depending on region. Karachi and Quetta get the most sunlight. Lahore and Islamabad get slightly less but still excellent solar resources. This calculator adjusts output by your city's irradiance data.
| System Size | Approx. Cost (PKR) | Monthly Generation | Best For |
|---|---|---|---|
| 3 kW | 2.4M – 3.5M | 350–450 units | Apartments, small homes (200–400 units/month) |
| 5 kW | 4M – 5.5M | 600–750 units | Medium homes with 1 AC (400–700 units/month) |
| 8 kW | 6.5M – 9M | 950–1,200 units | Large homes with 2–3 ACs (700–1,200 units/month) |
| 10 kW | 8M – 12M | 1,200–1,500 units | Villas or small businesses |
On-grid systems are the cheapest and most efficient. They feed excess power back to the grid via net metering (AEDB licensed). You get credits on your bill. However, they shut down during grid failures (no battery backup).
Hybrid systems include batteries so you have backup power during load shedding. They cost 30–50% more than on-grid due to battery packs. Ideal for areas with frequent load shedding.
Off-grid systems are fully battery-dependent and most expensive. Usually only suitable for locations with no grid connection.
Quality monocrystalline panels (Longi, Jinko, Canadian Solar) are rated for 25–30 years with a performance warranty guaranteeing at least 80% output after 25 years. Inverters typically last 10–15 years and may need one replacement during the system's lifetime.
Net metering allows you to sell excess solar generation back to your DISCO at a government-set buyback rate. You need AEDB (Alternative Energy Development Board) licensing and your DISCO's approval. The process takes 1–4 months. Once connected, your meter runs backwards when you generate more than you consume, crediting your account.
Yes — and in your favour. Every time NEPRA increases electricity rates, your solar savings increase proportionally. This is why many analysts project actual payback periods to be shorter than static calculations suggest. If tariffs rise 15% annually (which has been the trend), a 5-year payback becomes closer to 3.5 years in practice.
It depends on whether you have rooftop access and permission from building management. A 3 kW system can fit in roughly 180–200 sq ft (about 6 standard panels). If your apartment uses 200–400 units per month, a 3 kW system would cover most or all of your consumption. Some apartment buildings are installing centralised systems with individual sub-metering.
Very little. In Pakistan's dusty climate, panels should be cleaned every 2–4 weeks during summer (dust reduces output by 5–20%). A simple rinse with water is sufficient — avoid abrasive materials. Inverters are solid-state electronics requiring no maintenance beyond keeping them in a ventilated, shaded location. Annual system checks by an installer are recommended.
Enter your monthly electricity bill, select your city (for irradiance), and adjust system cost and performance ratio. The calculator estimates system size needed to offset your consumption, total cost, annual savings, and cumulative 25-year return. It uses actual NEPRA tariff data and PVGIS-sourced irradiance values for Pakistani cities. Read our full Solar Guide →