• By Best Solar Company PK
  • 14 Jul, 2026
  • Solar Guide
  • 5 min read

Before you invest in solar, it helps to know roughly how much electricity it will actually make. Pakistan gets excellent sunshine, so solar performs very well here — but the exact output depends on season, weather and how your system is set up. Here is a simple guide.

The rule of thumb: units per kW

Across most of Pakistan you get roughly 4–4.5 “peak sun hours” a day on average over the year. As a practical rule, each 1 kW of solar panels produces about 4–5 units (kWh) per day — call it around 120–150 units a month. Summer and clear days sit at the top of that range; winter and cloudy days at the bottom.

Output by system size (approximate)

  • 5 kW system: about 20–25 units/day (~600–750 units/month).
  • 10 kW system: about 40–50 units/day (~1,200–1,500 units/month).
  • 15 kW system: about 60–75 units/day (~1,800–2,250 units/month).

Compare that to your monthly bill: if you use ~1,000 units a month, a well-placed 8–10 kW system can cover most of it. Our system-sizing guide shows how to match this to your usage, and the 5kW, 10kW & 15kW price guide covers cost.

What changes your actual output

  • Season and weather — more in summer, less on overcast monsoon days.
  • Shading and dust — a shaded or dirty panel makes far less; keep them clean.
  • Roof direction and tilt — south-facing, correctly tilted panels generate most.
  • Heat — very high temperatures slightly reduce panel efficiency.
  • System quality — Tier-1 panels and a good inverter hold output over the years.

Sizing is about matching production to how and when you use power — not just picking the biggest number.

Want an exact production estimate for your roof? Get a free survey and we will calculate expected units and savings for your home solar system.

Best Solar Company PK designs and installs reliable solar systems in Rawalpindi, Islamabad, Lahore, Multan, Taunsa Sharif and Karachi. Contact us for a free survey and the best advice for your home or business.