How many solar panels are needed to run a 1.5 ton AC?

A 1.5-ton split inverter AC draws approximately 1,100-1,500W depending on star rating and ambient temperature. To run a 1.5-ton AC plus basic home loads (fans, lights, TV, fridge) for 6-8 hours a day, you need a 2-3kW solar system. With 400W panels, that means 5-8 panels. A 5-star inverter AC needs the fewest panels.

How much solar panel is required for a 1.5 ton AC?

For running a 1.5-ton AC alone (without other home loads), a 2kW on-grid solar system is sufficient in most Indian cities with 5+ peak sun hours. If you also want to power fans, lights, TV, and a refrigerator along with the AC, a 3kW system is recommended.

What is the solar panel price for running a 1.5 ton AC?

A 3kW solar system sized for a 1.5 ton AC plus basic home loads costs approximately ₹1.55-1.80 lakh gross in 2026, dropping to ₹77,000-1.02 lakh after the ₹78,000 PM Surya Ghar subsidy. A 2kW system (AC only) costs around ₹1.05-1.20 lakh gross, or ₹45,000-60,000 net after subsidy.

Can solar run a 1.5 ton AC without a battery?

Yes, with a grid-tied (on-grid) system the AC can run directly on solar during the day, while drawing from the grid at night; a battery is only needed for backup during outages.

How many units does a 1.5 ton AC consume per month?

A 5-star 1.5-ton inverter AC running 8 hours/day consumes approximately 4.5-6 units/day, or 135-180 units/month. A 3-star non-inverter 1.5-ton AC consumes 7-10 units/day or 210-300 units/month. Upgrading to a 5-star inverter model significantly reduces the solar system size needed.

Solar Panel for 1.5 Ton AC in India 2026, Panels Needed, Cost ...

Q: Can a 1kW solar system run a 1.5 ton AC?

No, a 1kW solar system is not enough for a 1.5-ton AC. Even a 5-star inverter 1.5-ton AC draws 1,100W or more while running, leaving no headroom for inverter losses or reduced sunlight. You need at least a 2kW system for a 1.5-ton AC running alone.

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Solar Panel for 1.5-Ton AC: Complete 2026 Guide

A 1.5-ton split AC is the most common AC size in Indian homes. Running a 3-star 1.5-ton AC for 8 hours/day can add ₹1,800–2,800 to your monthly electricity bill. A properly sized solar system can bring this AC-related cost to effectively ₹0.

How Much Power Does a 1.5-Ton AC Use?

AC Type	Power Draw	Units/Day (8 hrs)	Units/Month	Monthly Bill (₹9/unit)
5-Star Inverter	1,100–1,300W	4.5–5	135–150	₹1,215–1,350
4-Star Inverter	1,300–1,450W	5–6	150–180	₹1,350–1,620
3-Star Inverter	1,450–1,600W	6–6.5	180–195	₹1,620–1,755
3-Star Non-Inverter	1,600–1,800W	7–8	210–240	₹1,890–2,160

What Solar System Size Do You Need for a 1.5-Ton AC?

Use Case	System Size	Panels (400W)	Net Cost (After Subsidy)	Monthly Savings
Only 1.5-ton AC (5-star, 6 hrs/day)	2 kW	5 panels	₹45,000	₹1,000–1,200
1.5-ton AC + basic home loads	3 kW	8 panels	₹82,000	₹1,900–2,300
1.5-ton AC + full home (2BHK)	4 kW	10 panels	₹1,42,000	₹2,800–3,200

* Net cost after PM Surya Ghar subsidy (capped at ₹78,000 for 3kW+). Savings at ₹9/unit average tariff.

Can a 1kW Solar System Run a 1.5-Ton AC?

No. A 1.5-ton AC draws 1,100–1,800W depending on the model. A 1kW solar system generates roughly 1kW at peak — leaving zero margin for inverter losses, other loads, or reduced irradiance (cloudy days, partial shade). You need at least a 2kW system for a 1.5-ton AC running alone.

Roof Space Required

A 2kW system (5 panels of 400W) requires approximately 130–160 sq.ft of shadow-free roof space. A 3kW system needs 200–250 sq.ft. Use our Roof Area Calculator to verify.

Cost Breakdown for a 3kW System (for 1.5-Ton AC + Home Loads)

Solar panels (8 × 400W): ₹65,000–80,000
On-grid inverter (3kW): ₹30,000–40,000
Mounting structure + cables: ₹15,000–20,000
Installation + DISCOM charges: ₹10,000–15,000
Total gross: ₹1,20,000–1,55,000
PM Surya Ghar subsidy: −₹78,000
Your net investment: ₹42,000–77,000

Payback Period — Running AC on Solar

If your 1.5-ton AC previously cost ₹1,800–2,500/month, a 3kW solar system paying for your AC bill pays back in:

At ₹1,800/month savings: ~3.8–5.5 years (on ₹82,000 net investment)
At ₹2,500/month savings: ~2.7–4 years

After payback, you get free AC cooling for 20+ years.

Comparison: 1-Ton vs 1.5-Ton vs 2-Ton AC Solar Requirements

AC Size	Power Draw	Min Solar Size	Panels Needed
1 Ton	800–1,000W	1.5 kW	4 panels
1.5 Ton	1,100–1,800W	2 kW	5 panels
2 Ton	1,600–2,200W	3 kW	8 panels
2.5 Ton	2,000–2,800W	3.5–4 kW	9–10 panels

FAQs — Solar Panel for 1.5 Ton AC

How many solar panels to run a 1.5-ton AC for 8 hours a day?

You need 5–8 panels of 400W each (2–3kW total system) to reliably run a 1.5-ton AC for 8 hours per day in India. The exact number depends on your city's peak sun hours and the AC's star rating. A 5-star inverter AC uses roughly 30% less power than a 3-star non-inverter model.

Can I run a 1.5-ton AC directly from solar panels without a battery?

Yes, with an on-grid solar system, the AC runs directly off solar power during the day. When solar generation is insufficient (evening, cloudy days), it automatically draws from the grid. You don't need batteries for daytime AC cooling — batteries only add value if you want night-time or outage coverage.

What is the solar panel cost for a 1.5-ton AC in India 2026?

A 2kW solar system (AC only) costs ₹1.05–1.20 lakh gross, or ₹45,000–60,000 after the PM Surya Ghar subsidy. A 3kW system (AC + basic home loads) costs ₹1.20–1.55 lakh gross, or ₹42,000–77,000 after the ₹78,000 subsidy.

Does the PM Surya Ghar subsidy apply to solar for AC?

Yes. The PM Surya Ghar subsidy applies to the whole rooftop solar system regardless of what you use the power for. A 2kW system gets ₹60,000 subsidy, and a 3kW+ system gets the maximum ₹78,000. The subsidy is on the system, not the appliance.

Calculate Your Solar Cost for 1.5-Ton AC

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Solar Panel for 1.5 Ton AC — How Many Panels & What System Size?

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