Rooftop Solar Panel Installation: Cost and Maintenance Guide for India  

rooftop solar panel

As the world shifts towards renewable energy, rooftop solar panels in India have become a popular solution for reducing electricity bills and promoting environmental sustainability. With over 300 sunny days a year, India has immense potential for solar energy. However, installing a rooftop solar panel system requires careful planning, budgeting, and maintenance. In this guide, we cover the essential details about the cost and upkeep of rooftop solar installations in India so you can make an informed decision on harnessing the power of the sun for your business or home.    

Why Consider Rooftop Solar Panels in India? 

Rooftop solar panels in India are not just an eco-friendly choice; they offer multiple financial and social benefits. Some of the reasons to install rooftop solar panels in India include: 

  1. Cost Savings: Once installed, solar panels can significantly reduce your monthly electricity bills by helping you generate your own electricity. You can even sell back the excess power to the grid. 
  1. Government Incentives: The Indian government offers various subsidies and incentives under the Ministry of New and Renewable Energy to promote solar energy adoption and make the installation process more affordable. 
  1. Sustainable Energy: Solar power is renewable and reduces your carbon footprint, which contributes to a cleaner environment. 
  1. Energy Independence: Solar energy reduces dependency on grid power, which can be expensive in certain areas. 
rooftop solar panel

Cost Breakdown of Rooftop Solar Installation 

The cost of installing rooftop solar panels in India depends on several factors, such as system size, location, and quality of components. Here’s what to expect in terms of expenses: 

1. Initial Investment 

  • System Size: The most critical factor in determining cost is the size of the solar system. A typical home may require a 1kW to 5kW system, while businesses may need larger setups. For a 1kW solar system, the cost typically ranges between ₹45,000 to ₹70,000. 
  • Type of Solar Panels: There are different types of solar panels, such as polycrystalline and monocrystalline. Polycrystalline panels are more affordable, costing around ₹30 – ₹45 per watt, while monocrystalline panels, which are more efficient, cost around ₹40 – ₹60 per watt. While the latter are more expensive, they can generate more power in less space. 
  • Inverter Costs: Solar inverters, which convert the direct current (DC) from the panels to alternating current (AC) for household use, are also vital to the system. Prices range from ₹10,000 to ₹40,000, depending on the system size. 
  • Batteries: If you’re opting for an off-grid solar system, you’ll need a battery to store energy, which adds to the cost. Solar batteries range between ₹10,000 to ₹80,000 depending on capacity and type (lead-acid or lithium-ion). 
  • Installation: Labor costs, which include installation charges, wiring, mounting, and other accessories, usually range from ₹5,000 to ₹25,000, depending on the complexity of the installation. 

2.  Government Subsidies and Incentives 

In India, the government offers subsidies on grid-connected rooftop solar systems for residential and institutional consumers. Under the Central Financial Assistance (CFA) scheme, up to 40% of the cost for systems up to 3 kW and 20% for systems between 3 kW to 10 kW is subsidized. This can significantly reduce your upfront investment. 

For example, if a 3 kW system costs ₹1.5 lakhs, the subsidy will reduce the price by around ₹60,000, bringing your total to ₹90,000. Additionally, the net metering policy allows users to sell surplus electricity to the grid, further improving the return on investment. 

3. Return on Investment (ROI) 

Though the upfront cost of installing rooftop solar panels in India can be substantial, the ROI is impressive. A rooftop solar panel system can pay for itself in 4-7 years, depending on system size and electricity consumption. After that, the electricity generated is practically free. A typical solar system has a lifespan of 25-30 years, meaning substantial savings in the long run. 

Maintenance of Rooftop Solar Panels in India 

Once installed, solar panels require regular maintenance to ensure they operate at peak efficiency. Solar panels have no moving parts, which minimizes the chances of mechanical failure. However, dust, debris, and bird droppings can accumulate on the surface, affecting performance.                

  1. Cleaning 
  • Frequency: Where dust and pollution are prevalent, it’s important to clean solar panels every 2-3 months. In drier regions or during summers, cleaning may need to be done more frequently. 
  • Method: Use a soft brush or sponge with water to clean the panels. Avoid using harsh detergents or abrasive tools, as these can damage the protective coating on the solar cells. 

Professional Cleaning: For more thorough maintenance, you can also hire professional cleaning services. This can cost anywhere from ₹500 to ₹2,000, depending on the size of the system and your location. 

  1. Inverter Maintenance 

Solar inverters, unlike panels, are more prone to wear and tear because they are used continuously. Typically, inverters last 10-15 years. Therefore, it’s advisable to check inverter cables and connections regularly and replace the inverter when its efficiency drops. The cost of replacing an inverter can range between ₹10,000 to ₹40,000. 

  1. Monitoring 

Many modern solar systems come with remote monitoring features so that you can track energy production, consumption, and any issues through a mobile app. Regularly checking the system ensures any performance drops are noticed early. 

Common Issues and Troubleshooting 

1. Shading 

Trees, nearby buildings, or any obstruction that casts a shadow on the panels can reduce their efficiency. Before installation, ensure your roof is free from shade during peak sunlight hours. 

2. Voltage Fluctuations 

In certain cases, voltage fluctuations in the grid can affect solar panel performance. Installing a high-quality inverter with protection mechanisms can help manage these fluctuations. 

3. Panel Degradation 

Solar panels degrade over time, losing about 0.5% to 1% efficiency per year. Most panels come with a 25-year performance warranty, ensuring that even after two decades, they operate at about 80% of their original efficiency. 

Final Words 

Installing rooftop solar panels is a long-term investment that not only saves you money on electricity bills but also contributes to a greener environment. Also, government subsidies, tax incentives, and long-term savings can offset the initial costs. With proper maintenance, rooftop solar panels in India can serve you efficiently for 25-30 years. Whether you’re a homeowner looking to cut utility bills or a business aiming to embrace sustainability, solar power is an excellent solution for harnessing the abundant solar energy of India. 

Get in touch with our experts at M&Y Solar for customized rooftop solar solutions and enjoy a cooler, more sustainable tomorrow. 

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