How many solar panels run a 1.5 ton AC in Pakistan?

A 1.5 ton inverter AC draws about 1,200–1,500W. To run it on solar during the day you need roughly 4–5 panels of 550W. Running it on battery at night requires extra panels and storage.

How many solar panels does an average Pakistani house need?

A typical home using 15–20 kWh per day needs about 8–12 panels of 550W (roughly a 4.5–6.5 kW system), assuming 5 peak sun hours.

What is the formula to calculate solar panels?

Number of panels = (daily kWh × 1.25 losses) ÷ (peak sun hours × panel wattage in kW). For example, 18 kWh ÷ (5 × 0.55) ≈ 8 panels of 550W.

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How Many Solar Panels Do I Need in Pakistan?

Updated 8 June 2026 · By LoadCalculator.site · ~5 min read

The honest answer is: it depends on how much electricity you use, not on the size of your house. This guide gives you the simple formula, worked examples for common Pakistani homes, and a free tool that does the maths for you.

The simple formula

To size a solar array you only need two numbers: your daily energy use in kWh (units) and your city's peak sun hours.

Panels = (Daily kWh × 1.25) ÷ (Sun hours × Panel kW)
The 1.25 covers real-world losses (heat, dust, wiring, inverter inefficiency).

Most new panels in Pakistan are 550W (0.55 kW), and most cities average about 5 peak sun hours. Plug those in and the formula becomes easy to use.

Worked example

Say your home uses 18 units (kWh) per day — typical for a household running a fridge, fans, lights, a TV and one AC for part of the day:

(18 × 1.25) ÷ (5 × 0.55) = 22.5 ÷ 2.75 ≈ 8 panels

So about 8 panels of 550W, which is roughly a 4.4 kW system. If you live in Islamabad or Peshawar (closer to 4.5 sun hours in winter), round up to 9–10 panels.

How many panels for common appliances

People often search by appliance. Here is a rough daytime guide (panels needed to run the load directly from the sun; add more if you want to run it at night from batteries):

Appliance	Typical load	Panels (550W) to run in daytime
1 ton inverter AC	~900–1,100 W	3–4 panels
1.5 ton inverter AC	~1,200–1,500 W	4–5 panels
2 ton inverter AC	~1,800–2,200 W	5–7 panels
Refrigerator	~150 W (runs all day)	1 panel
4 ceiling fans + 8 LED lights	~380 W	1–2 panels
Water pump (1 HP)	~750 W	2 panels

Note: an inverter AC's average draw is lower than its startup/peak. Sizing for the peak gives you a safe, comfortable system.

Whole-house quick reference

Daily use	Approx. system	Panels (550W)
5–8 kWh/day (light)	2–3 kW	4–6 panels
10–15 kWh/day (moderate)	3–5 kW	6–9 panels
15–25 kWh/day (1–2 ACs)	5–8 kW	9–15 panels
25–40 kWh/day (heavy, multiple ACs)	8–12 kW	15–22 panels

Don't want to do the maths?

You don't have to. Our free load calculator lets you tick off your exact appliances and hours, set your city's sun hours, and instantly tells you the precise panel count, inverter size, battery and full PKR cost — far more accurate than any rule of thumb.

Calculate your exact panel count

Free, instant, no sign-up. Add your appliances and get a personalised system design.

Open the Free Calculator →

Once you know your panel count, see what it will cost in our solar system price guide, and learn how to sell extra power back to the grid in our net metering guide.

Frequently asked questions

How many solar panels run a 1.5 ton AC?: About 4–5 panels of 550W to run it during the day. To run it at night you need extra panels plus a battery bank.
How many panels does an average Pakistani house need?: A home using 15–20 kWh/day typically needs 8–12 panels of 550W — roughly a 4.5–6.5 kW system at 5 sun hours.
Does a bigger house need more panels?: Not necessarily. Panel count depends on how much electricity you actually use, not the floor area. A small home with three ACs needs more than a large home with none.
Should I add extra panels for the future?: Yes — many installers add 10–20% headroom for future appliances and to offset panel degradation over the years.