Frequently Asked Questions

A solar rooftop system is a power generating arrangement where solar panels are installed on the roof of a building to convert sunlight into electricity. It's an efficient way to generate clean, renewable energy while utilizing otherwise unused roof space.

Solar panels convert sunlight into DC electricity through photovoltaic cells. An inverter then converts this DC power into AC power, which can be used to run household appliances. Excess power can be stored in batteries or fed back to the grid through net metering.

There are three main types of solar systems: Grid-tied (connected to the power grid), Off-grid (completely independent with battery storage), and Hybrid systems (connected to the grid with battery backup). Each type suits different needs and situations.

Yes, solar panels continue to generate electricity during cloudy weather and winter, though at reduced efficiency. Even on overcast days, some sunlight reaches the panels. Modern solar panels are designed to work effectively even in diffused light conditions.

Grid-tied systems typically shut down during power failures as a safety measure. However, systems with battery backup or hybrid systems can continue to provide power during outages, making them ideal for areas with unreliable grid supply.

A solar plant's output depends on several factors including system size, location, panel efficiency, and weather conditions. Generally, a 1 kW system can produce 4-5 units (kWh) of electricity per day in optimal conditions.

You can run any standard electrical appliance on solar power, including AC, refrigerator, TV, washing machine, and lights. The key is to size your system appropriately to meet your power requirements.

You need adequate roof space with good sun exposure, structural stability assessment, necessary permissions from local authorities, and connection approval from your electricity distributor. A site assessment by solar experts can help determine your roof's suitability.

The size of your solar plant depends on your electricity consumption, available roof space, budget, and energy goals. Review your past electricity bills, consider future consumption changes, and consult with solar experts for optimal sizing.

When installed properly by qualified professionals, solar panels will not damage your roof. In fact, they can protect your roof from weather elements. Professional installers use appropriate mounting systems and waterproofing techniques to ensure roof integrity.

Yes, solar panels can be installed on various roof types including metal, tile, and asphalt shingle roofs. Different mounting systems are available for different roof materials. A structural assessment will determine the best installation method.

A well-maintained solar system typically lasts 25-30 years. Solar panels come with 25-year performance warranties, though they continue to produce energy beyond this period at slightly reduced efficiency. Inverters usually need replacement after 10-15 years.

No, solar systems have minimal maintenance requirements. Regular cleaning and basic annual inspections are usually sufficient. There are no moving parts in the system, which reduces wear and tear. The main component that might need replacement is the inverter after 10-15 years.

Yes, regular cleaning is recommended to maintain optimal performance. Dust and debris can reduce efficiency. Cleaning frequency depends on your location and environment, but typically once every 2-3 months is sufficient. Simple water cleaning is usually adequate.

The cost varies based on system size, quality of components, and type of installation. Generally, residential systems range from ₹40,000 to ₹60,000 per kW before subsidies. Commercial systems may have different pricing due to scale advantages.

The typical break-even period is 3-5 years, depending on your electricity consumption, tariff rates, and system cost. With government subsidies, this period can be shorter. Solar systems provide returns for 20+ years after breaking even.

Yes, the government offers subsidies for residential rooftop solar installations. Currently, subsidies up to 40% are available for systems up to 3kW, and 20% for systems between 3kW to 10kW. Specific subsidy amounts vary by state.

In the CapEx (Capital Expenditure) model, you purchase the solar system outright. In the OpEx (Operational Expenditure) model, a developer installs and maintains the system, and you pay for the electricity generated at an agreed rate. Each has its advantages based on your investment capacity and preferences.

Yes, many banks and NBFCs offer solar-specific loans with attractive interest rates. Some offer up to 80% financing of the project cost. These loans often come with longer repayment terms and sometimes with additional benefits for green energy projects.