Question: How do solar panels generate electricity?

Answer:  Solar panels work on the phenomenon called the photoelectric effect to generate electricity. Solar panels are nothing more than blocks of specially designed semiconductor material that produce a small amount of electricity when light falls on them. This small amount of electricity is produced in a large number of solar panels (Solar Arrays) to generate electricity for daily consumption.

Question: How is a solar PV system better than a diesel generator as a backup system?

Answer: Although the capital cost of a PV system is higher than a DG system, a DG system has a high fuel cost and maintenance cost. Although a PV system does not require any fuel and its maintenance is very minimal and easy. Apart from that, a PV solar system is a clean and environmentally friendly option for a backup system.

Question: What is the profitability of solar power generation compared to the power distribution business?

Answer: Solar energy production cost is set at Rs. 40,000-50,000 / KW (grid-tied system), it will generate 1440-1550 kWh per year. The electricity tariff is fixed at Rs. 7-8 / - per Kwh/unit. It will pay back your investment in 4-5 years, then after getting free electricity for up to 20-25 years.

Question: What type of maintenance schedule should I follow to keep the solar PV system in good condition?

Answer: A solar PV system requires very minimal maintenance from the owner and is very easy on to maintain. Regular cleaning of the solar panels should be ensured in order for the system to operate at its full efficiency and occasional checks should be made to ensure that there is no shading on the solar panel due to any obstruction. System components, except solar panels, should be kept in a shaded area. These small steps can lead to a healthier and longer life of your solar PV system.

Question: What about power generation in cloudy weather?

Answer: A photovoltaic solar system that does not allow direct sunlight for the power supply, as well as direct sunlight which is maximally efficient. The system continues to operate even in cloudy weather, but the efficiency gains will be reduced to some extent. Efficiency is typically reduced to 70% on an overcast day. More than a place like India, I want over 300 sunny days for one, overcast conditions and not a major concern.


Question: If I invest in a solar roof installation, how soon will I get my money back?

Answer: In a solar system south of the city, the main investment is in the installation and a minimum maintenance system and a fuel system. A 5 KW solar PV system with an average payback period of around 4 to 5 years. With a lifespan as long as 20-25 years, 70-75% of the power produced by it can be considered free electricity.

Question: What about the roof area do I need to install a solar PV system?

Ans. It is mandatory for a photovoltaic solar energy installation to have a shadow-free area all day. The most important factor on which the area of a solar photovoltaic system depends is the efficiency of the panel. Generally, a 15% efficient solar panel requires 100 square feet for 1kw. Shade-free roof area. While a Panel with an efficiency of 12% needs approximately 125 sq.. for 1kw Shade-free roof area. Another factor is the weight of the solar panels that can put pressure on the roof of the building. For very old and poorly constructed buildings, the Panels must be spread over a larger area so that the construction can support the weights.

Question: What is the net measure? How to take advantage of it?

Answer: Net Metering is a policy that allows unused energy produced by the solar photovoltaic system to be directed to the grid to which the system is connected. This allows the owner of the system to obtain concessions on their electricity bills, as the number of units fed to the grid will be deducted from the number of units actually consumed by the owner and invoicing will only be done for this part of the units.

Question: What is the difference between off-grid and on-grid solar System?

Answer: An off-grid roof kit produces energy to recharge the battery which is then used as a backup overnight. In a grid system, the generated electricity is sent to the main grid and the energy is taken from the grid overnight for use.