Frequently Asked Questions

A rooftop solar system is a set of solar panels installed on the roof of your house that captures sunlight and converts it into electricity. It helps reduce your electricity bills and promotes clean, green energy.
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Solar panels convert sunlight into DC electricity. An inverter then converts this DC into AC electricity, which powers your home appliances. Excess power can be fed back to the grid (if net metering is available).
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● Reduction in electricity bills (up to 70–90%)
● Environment-friendly and renewable source of energy
● Government subsidies and incentives available
● Increases property value
● Long life (25+ years) with low maintenance
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Typically, 100 sq. ft. of shadow-free roof area is required for a 1 kW system. For a medium household (3–5 kW), around 300–500 sq. ft. is required.
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Good-quality solar panels have a life of 25 years or more with a performance warranty.
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Under the current MNRE scheme, up to 40% subsidy is available for residential rooftop solar projects (subject to capacity and eligibility). ERFLOG Solar will assist you in the subsidy application process.
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Net metering is a billing arrangement where any excess solar power generated is sent back to the grid. You get credit for this exported electricity, which reduces your overall bill.
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Solar panels require minimal maintenance. Usually, simple cleaning with water every 15–20 days is sufficient. ERFLOG Solar also offers Annual Maintenance Contracts (AMC).
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Cost depends on the system size, technology, and quality of components. On average:
● 1 kW system costs ₹45,000 – ₹60,000 (before subsidy)
● Larger systems (5–10 kW) are more cost-efficient per kW.
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Typically, the payback period is 3–5 years, depending on your electricity usage, state subsidies, and tariff rates. After that, electricity is practically free for 20+ years.
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Yes, if:
● Your roof has enough shadow-free space.
● Your electricity connection is residential.
● Your local DISCOM allows net metering.
● ERFLOG Solar will conduct a free site survey to confirm eligibility.
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Shaded or small roofs may reduce efficiency. In such cases, we suggest higher-efficiency solar panels or ground-mounted options if space is available.
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● Site survey
● Design & engineering
● Subsidy & DISCOM approvals
● Installation & commissioning
● Maintenance support
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For residential systems, installation usually takes 5–7 days after approvals and material delivery.
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● Trusted brand with expertise in rooftop solar projects
● MNRE-approved vendor and registered with DISCOMs
● High-quality equipment with a warranty
● Hassle-free subsidy and net metering process
● Dedicated customer support