FAQ's

Solar PV System stands for Solar Photovoltaic System where the sunlight is directly converted into electricity with the no emission of any harmful gases. At first, sunlight falls on the solar modules which convert the sunlight (photon) into DC electricity then inverter which converts the DC electricity into AC electricity and then finally we can utilize the AC power.

Energy generated through solar PV system is directly proportional to the available sunlight or Solar Irradiance. Energy generated in the morning and the evening is less as there is low solar irradiance whereas in the peak hour at the noon solar generates at its maximum.

Factors important when planning to go solar are:-

• - Solar generation Cost versus Grid Tariff.
• - Contract Demand
• - Availability of Shadow free area.
• - Consumption during Day hours (7 am to 5 pm)

Solar can be utilized as the solitary energy source with the combinations with a battery bank. However, if the grid is present then it is advisable to use solar with combinations with the grid. Solar PV can be integrated with your existing power sources (like grid power, inverter, diesel generator etc.) in such a manner that the priority is automatically always given to the solar power to be consumed first.

Solar PV system is highly proven and reliable technology. A PV system that is designed, installed and maintained well can work efficiently over the period of 25 years. The inverters, which are an integral part of a solar PV system, have a manufacturer warranty of over 5 years and one can extend this by paying nominal charges.

There are two main buying and financing options for solar

• - Buying a Solar PV System (CAPEX Model): You purchase the solar PV system upfront and can avail various bank loan options to finance your Solar PV system.
• - Buying a Solar Power (OPEX Model): In the OPEX Model, a solar power developer owns a solar PV system which is on your rooftop or open areas.You must pay for the generated electricity as per the power purchase agreement (PPA). This usually requires a long-term buying commitment and guarantees from your side.

Net metering consents the surplus energy exported to the grid, it will be set off in consumers’ next month electricity bill. For Example, if on a given day you generate 40 units from solar and consume 30 units, the balance 10 unit will be exported to the grid. Through net metering, there will be the zero wastage of power.

Solar PV System cost varies with the size of the system. An On-Grid System of capacity up to 10 kW costs ₹ 55- 59/Wp, between 10-100 kWp costs ₹ 48- 55/Wp and above 100 kW costs ₹ 44- 48/Wp. For utility-scale project cost can be even lower up to ₹ 42- 43/Wp. However, for off-grid systems with battery backup costs increases significantly and lies between ₹ 80- 85/Wp

Solar PV System, if designed well is highly reliable, However, the major components of Solar PV System come with a warranty. As solar PV system is a kind of assets so it’s always advisable to take an insurance.

Yes, solar power today is cheaper than grid power for numerous consumer categories across many states. Moreover, solar is a one-time investment while grid tariff raises every year. Therefore, by choosing to go solar today, you are locking yourself in a fixed energy price for the succeeding 25 years.

The payback period for your solar PV system stands for the period it takes for your initial investment to be recovered from the savings it leads to and Return on Investment (RoI) refers to the effective returns that your investment would generate. The higher your monthly savings, the quicker your initial investment would be reimbursed and the higher your RoI would be. Typically, commercial & industrial consumers should expect payback in 3- 5 years and residential consumers should expect payback in 5- 7 years. Once the initial cost of your system is paid back, the energy generated by it for the next 18- 22 years is almost free of cost.

It takes about 2-4 weeks to install a smaller system and about 4-8 weeks for larger systems. However, the actual construction time at the site is much lower since almost half of the time is spent on off-site activities such as design, engineering, procurement, etc. In certain cases, there may be variations to these timelines because of access to the site, rains, etc.

Good solar installers like Ujala Solar Energy System follow standard procedures and quality standards. So, once you’ve chosen the right installer, you don’t have to worry about supervision. However, it may be a good practice to:

• - Ask for layout drawing and bill of material.
• - Ensure that the delivered material is as per the bill of material, is damage free and is kept in a safe place.
• - Ensure that cables and wires are properly tied and clamped.