10kW vs 5kW Solar System: Which One Is Right for Your Home or Business?

In 2025, switching to solar energy is not just an environmentally friendly move — it’s also a smart financial decision. Whether you’re considering a 5kW solar system or a 10kW solar system, understanding the installation process, costs, and benefits is essential to make an informed choice.

This complete guide walks you through every step of installing a 5kW or 10kW solar system for your home or business.

☀️ Step 1: Understand Your Power Needs

Before installing a solar system, it’s important to assess your monthly electricity usage.

• A 5kW solar system is ideal for homes using 400–600 units/month

• A 10kW solar system suits larger homes or small businesses consuming 900–1200 units/month

Analyze past electricity bills to estimate your average monthly usage. This helps decide whether a 5kW or 10kW solar system is right for your needs.

🏠 Step 2: Check Roof Space & Sunlight Availability

Roof size and orientation affect the performance of your solar setup.

• 5kW solar system needs approx. 350–400 sq. ft.

• 10kW solar system requires around 700–800 sq. ft.

Your rooftop should get ample direct sunlight for at least 5–6 hours daily to ensure optimal performance.

💰 Step 3: Calculate Installation Costs in 2025

Estimated system costs in 2025 (India):

Subsidy Note:
Under India’s Solar Rooftop Program, both 5kW solar systems and 10kW solar systems are eligible for central and state-level subsidies.

🛠️ Step 4: Select the Right Solar Equipment

Choosing high-quality equipment ensures better efficiency and durability.

• Solar Panels: Mono PERC panels recommended for higher efficiency

• Inverter: Grid-tied inverter suitable for on-grid systems

• Mounting Structure: Should withstand local wind and weather

• Battery (optional): Needed only if you want backup during power cuts

Whether you choose a 5kW or 10kW solar system, always go with Tier-1 equipment brands for reliability.

🧾 Step 5: Apply for Net Metering & Subsidy

Once you’ve finalized the system, apply for net metering through your local DISCOM (distribution company). This allows you to export excess electricity to the grid and earn credits.

• Both 5kW and 10kW solar systems qualify for net metering

• You can apply for subsidies through the National Portal for Rooftop Solar (India)

👷 Step 6: Installation & Testing

After paperwork and permits:

1. Installation team mounts panels and inverters

2. System is connected to your home grid

3. DISCOM approves and connects net meter

4. Trial run is conducted to ensure performance

Typical installation timeline:

• 5kW solar system: 3–5 days

• 10kW solar system: 5–7 days

💡 Final Tips Before Going Solar in 2025

• Hire MNRE-approved installers

• Maintain your panels every 6 months for optimal efficiency

• Keep a mobile app or dashboard to track daily performance

📈 Conclusion

Whether you go for a 5kW solar system or a 10kW solar system, 2025 is the perfect year to make the switch to solar. With improved technology, government subsidies, and rising electricity prices, solar power offers long-term savings, energy independence, and a cleaner future.

Evaluate your usage, roof space, and budget, then choose the right size system to start generating clean energy today.