Editorial Team
Updated Dec 10, 2024 · 6 min read
Numbers on paper are one thing. Real results from a real Kerala family are another. This is the complete story of the Sharma family's 5 kW rooftop solar installation in Kochi — including every rupee spent, every unit generated, and the subsidy timeline.
Their experience illustrates both what can go right when you plan carefully, and what challenges you should anticipate.
Quick Summary
- Location: Kakkanad, Kochi, Kerala
- System size: 5 kW (12 panels × 415W monocrystalline TOPCon)
- Total installation cost: ₹2,92,000
- MNRE subsidy received: ₹78,000
- Net investment: ₹2,14,000
- Annual savings: ₹52,000 (electricity bill + net metering credits)
Check Subsidy Eligibility
Find out which government subsidies you qualify for.
Understanding the Sharma Family's Solar Investment
The Sharma family's 5 kW installation in Kakkanad is a detailed real-world case study showing every cost component, subsidy received, and monthly generation figure after 12 months of operation.
Their investment breakdown demonstrates how an MNRE subsidy combined with an SBI solar loan can make a premium system cashflow-positive from day one.
| Cost Component | Amount |
|---|---|
| Panels (12 × 415W TOPCon) | ₹1,74,000 |
| Hybrid Inverter (5 kW) | ₹42,000 |
| Mounting, Wiring & Safety | ₹33,000 |
| Documentation & Lab Tests | ₹8,000 |
| GST (12%) | ₹32,000 |
| Gross Installation Cost | ₹2,92,000 |
| MNRE Subsidy Received | −₹78,000 |
| Net Investment | ₹2,14,000 |
The ₹78,000 MNRE subsidy was credited to Arjun's account 52 days after net meter installation. Their SBI solar loan of ₹1,50,000 at 8.5% interest results in an EMI of ₹3,083/month, making them net positive from day one compared to their previous KSEB bill of ₹4,500/month.
The Sharma family's experience confirms that structuring a solar loan so that the EMI is lower than the electricity bill you're replacing means you start saving money from the very first month — before the loan is even paid off.
Is Your Situation Similar to the Sharma Family?
The Sharma family's case study applies most directly to homeowners who share these characteristics. See how many of these match your situation:
- Monthly KSEB bill of ₹3,000–₹6,000 (similar to the Sharmas' ₹4,500 pre-solar bill)
- South or southwest facing roof with minimal shading from trees or buildings
- Planning to stay in the home for at least 7–10 years to realise full payback benefits
- Interested in hybrid inverter to future-proof for battery storage during power cuts
- Willing to use a bank solar loan to reduce upfront capital requirement
Real-world generation may differ from projections by 5–15% depending on your specific district's solar irradiation, roof orientation, and local shading conditions. Always get a site-specific projection from your installer rather than applying national averages.
