Solar Size Calculator

Calculate the exact solar plant size you need based on your monthly electricity bill or power consumption. Get instant details on solar panels, roof area, inverter and battery requirements.

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Trusted by homeowners, businesses & solar installers across India

How to Use the Solar Size Calculator

Enter Your Bill or Units

Add your monthly electricity bill (₹) or total units consumed (kWh).

Click Calculate

Our algorithm calculates solar plant capacity based on average sunlight hours.

Get Complete Solar Details

View recommended solar size, panel count, roof area, inverter & battery.

Solar Size Calculator Tool

Why Proper Solar Sizing Matters

Maximum Savings

Correct sizing ensures optimal power generation and fastest ROI.

Lower Installation Cost

Avoid oversizing and unnecessary solar infrastructure expenses.

Future Ready

Plan for EV charging, AC load and future power expansion.

Frequently Asked Questions

How is solar size calculated?

Based on electricity units, sunlight hours (4–5 hrs/day) and system efficiency.

How much roof area is required?

On average, 80–100 sq.ft of shadow-free area is required per kW.

Is battery mandatory?

No. Batteries are optional for on-grid systems and required for backup.

Can this run AC & fridge?

Yes, with a properly sized inverter and solar capacity.