⚡ Solar Sizing Calculator in India: Know Exactly How Much Solar You Need

If you are planning to install rooftop solar, the biggest question is simple: How much solar system do I actually need?
Most homeowners and businesses either oversize or undersize their system, leading to poor returns or wasted investment. That’s exactly why we created the Everrenew Energy Solar Sizing Calculator — a free, professional tool designed for India.

☀️ Why Solar System Sizing Is So Important

Choosing the right solar capacity directly impacts your savings, payback period, and long-term ROI.
If your system is too small, your electricity bill stays high.
If it is too large, you may not recover your investment quickly.

A scientific solar sizing approach considers:

• Your actual electricity consumption
• Location-based solar radiation
• State electricity tariffs
• Consumer category (domestic, commercial, industrial)
• Roof space and performance factors

This is exactly what our calculator does.

📍 Step 1: Location-Based Solar Irradiance

Solar generation depends heavily on location. Cities like Jaipur, Ahmedabad, and Hyderabad receive much higher solar radiation compared to coastal or northern regions.

Our tool uses:

• Satellite solar data
• 30-year climate models
• Exact GPS or pincode-based location
• Monthly solar generation profile

This ensures accurate energy generation forecasts for your property.

🏠 Step 2: Consumer Type and Tariff

Electricity tariffs vary widely across India and directly affect your savings.

The calculator automatically fetches:

• State electricity tariff
• DISCOM slab averages
• Consumer category (Domestic, Commercial, Industrial)
• Latest SERC tariff benchmarks

You can also override the tariff to match your bill.

This helps you understand your real financial benefit before investing.

📊 Step 3: Consumption-Based System Design

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You can:

• Enter your monthly units manually
• Upload your electricity bill for AI extraction
• Add monthly variation for accurate modelling

The calculator then designs a system that matches your usage pattern.

Instead of generic sizing, you get:

• Monthly solar vs consumption comparison
• Solar coverage percentage
• Surplus generation estimate

📈 Step 4: Financial Analysis and ROI

The biggest benefit of this tool is professional financial modelling.

You get:

• Annual savings estimate
• Payback period
• 25-year lifetime value
• Return on investment
• CO₂ emission reduction
• Government subsidy calculation

For domestic users, the calculator also includes the PM Surya Ghar Muft Bijli Yojana subsidy.

📉 Monthly Solar Output and Savings

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The tool generates:

• Month-by-month solar output
• Seasonal variation
• Energy savings trend
• Coverage of your electricity needs

This is especially useful for businesses and factories with seasonal demand.

📂 Download Professional Solar Report

After calculation, you can download a full Excel report including:

• Monthly solar generation
• Financial projection
• 25-year revenue model
• Tariff assumptions
• Irradiance data
• Detailed ROI

This report can also be used for:

• Bank financing
• Internal approvals
• Decision making
• Comparing vendors

🚀 Who Should Use This Solar Calculator?

This tool is ideal for:

• Homeowners planning rooftop solar
• Commercial buildings and offices
• Hotels and hospitals
• Industrial factories
• Warehouses and logistics hubs
• Real estate developers
• Renewable energy consultants

💡 Why Choose Everrenew Energy?

At Everrenew Energy, we combine:

• Data-driven solar design
• Advanced modelling
• Transparent financial projections
• Latest government policy insights

Our goal is to help you make a confident, informed solar investment.

⚡ Start Your Solar Journey Today

Before speaking to multiple vendors or comparing quotations, get clarity with real data.
Use our free Solar Sizing Calculator to know:

• The exact system size
• Your real savings
• The right investment decision

👉 Try the calculator now and take the first step toward energy independence.