How Much Solar Panel Required for Home (2BHK, 3BHK, 4BHK) in Tamil Nadu

If you’re a homeowner in Tamil Nadu—whether in Erode, Chennimalai, Kangeyam, or nearby districts—you might be wondering: How much solar panel do I need for my 2BHK, 3BHK, or 4BHK house? With electricity bills rising month by month, especially during summer when the AC runs nonstop, it’s a smart move to consider home solar system installation.

In this blog, we break down the solar requirements based on your electricity bill, home size, and common appliances (like 1.5 Ton and 2 Ton ACs). Whether you’re looking to cut your ₹3000 bill or slash a ₹7000+ one, we’ve got you covered with solar system sizing, cost, subsidies, and practical energy-saving tips.

How to Choose the Right Solar System for Your Home Size in Tamil Nadu

Solar System for 2BHK Home in Erode

If you’re staying in a 2BHK home with one 1.5 Ton AC and average electricity bills between ₹3000 to ₹4000, your energy usage is likely around 500 to 720 units/Bimonth. A 3kW solar system is an ideal fit here. You’ll need:
- Panels Needed: 6 panels (540W Bifacial)
- Rooftop Space Required: 195 sq.ft (approx.)
- System Price: ₹1,22,000 after ₹78,000 solar subsidy under PM Surya Ghar Yojana Tamil Nadu

3kW Home solar Installation Project Erode

Solar System for 3BHK Home in Erode

For a 3BHK with multiple ACs, geysers, and kitchen appliances, your EB bill may reach ₹5000 to ₹6000. You’ll need:

Recommended System: 4kW solar system
Panels Needed: 8 panels (540W each)
Space Required: 260 sq.ft
System Price: ₹1,62,000 after ₹78,000 subsidy

4kw rooftop home solar project Mamarathupalayam, near chithode erode

Solar System for 4BHK Home in Tamil Nadu

Surprised? Some 4BHK homes with multiple ACs and high usage can cross ₹7000–₹9000 per month in EB bills. For such cases:

System Size: 5kW solar system
Panels Needed: 10 panels (540W)
Rooftop Space: 325 sq.ft
System Cost: ₹2,62,000 after ₹78,000 subsidy

5kW subsidy solar project for home anthiyur erode

👉 Note: Energy consumption depends more on the number of appliances than the size of your home. Even a 2BHK with 2 ACs, fridge, washing machine, and geysers can use as much power as a 4BHK with limited usage.

How Much Solar Panel Required for 1.5 Ton and 2 Ton AC?

5 Ton AC: Uses 1.5 to 2 units per hour. For 6 hours daily, monthly consumption is 270–360 units.
- Solar needed: 2kW system minimum for AC alone (4 panels)
2 Ton AC: Uses 2.5 to 3 units/hour. For 6 hours a day, that’s ~540 units/month.
- Solar needed: 3kW system minimum for AC alone (6 panels)

How Much Solar Panel Needed for 3kW System?

A 3kW system is one of the most common in homes:

Needs 6 panels of 540W bifacial
Requires 195 sq.ft of rooftop area
Ideal for monthly consumption of 300 to 400 units

How Much Space Required for 5kW Solar Panel System?

10 panels of 540W
Total area: 325 sq.ft

Best for homes with 600 to 700+ units/month usage

For more residential related projects visit our Residential solar project page

Practical Tips to Reduce EB Bill in Tamil Nadu Homes

Even with solar installed, saving energy helps reduce both load and costs. Here are energy-saving tips:

Use LED lights instead of CFL or tube lights
Keep AC at 26°C, and use it with ceiling fans
Invest in energy-efficient appliances with 5-star ratings
Unplug chargers and TVs when not in use
Use washing machines with full loads only
Consider installing solar water heaters
Clean your rooftop solar panels regularly for better efficiency

How to Get Started with Rooftop Solar for Your Home under PM SURYA GHAR Scheme.

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Groena Solar Pvt Ltd, a leading solar company in Erode, helps homeowners claim up to ₹78,000 subsidy under the PM Surya Ghar Yojana Tamil Nadu.

We also assist with:

Solar panel installation Erode and across tamilnadu
Subsidy & Net metering (TANGEDCO) approvals
Bank loan support
After-sales service & maintenance

Thinking of switching to solar power for house in Tamil Nadu? Contact Groena Solar for a free consultation. We’ll suggest the right solar panel setup for home, handle subsidy paperwork, and guide you through net metering and installation.

📞 Phone: +91 94441 55479 | +91 87781 82864

📧 Email: contact@groena.in
🌐 Website: www.groena.in
🏢 Office Address:
Groena Solar Private Limited
67/1, Lakshmi Complex, 2nd Floor,
Gandhiji Road, Erode – 638001,
Tamil Nadu, India

For Subsidy Enquiry : Groena subsidy Enquiry Form

We serve customers across Erode locality like Chennimalai, Kangeyam, Vellode, Uthukuli, and nearby towns with affordable and quality solar panel installation services.

Our Solar project portfolio across tamilnadu