FAQ | Alligator Energies Pvt. Ltd.

When Sunlight falls(light, not heat) on photovoltaic modulesdue to photo voltaic effectit produces direct current (DC). Then by a device called an inverter this DC electricity is converted to alternating current (AC), which is then wired into your main distribution panel where it feeds your internal power grid.

1 kWp solar system requires approximately 8 to 10 sq. m (or 100 sq. ft) of shadow free area. Therefore, one 1 MWp (1000 kWp) solar system would require 10,000 sq. m / 1,00,000 sq. ft / 3 acres of shadow free area.

Solar PV modules (panels) and inverters are the main components of a solar power system and they constitute 60% to 70% of project cost.

For 1 MWp (1000 kWp) solar system would cost around 4 – 4.5 crores, including all components, installation and commissioning, delivery and taxes. System Cost depends on the capacity to be installed the price will be slightly higher for the installation below 200kWp.

Subsidy is declared by MNRE (Ministry of New Renewable Energy) at process by state Nodal agencies. 30% of benchmark cost CFA/subsidy is declared for residential/ not for profit in the Institutional and Social sector. Thus all the organization / Institutions including those registered under the society registration Act 1860 ant the Indian Trust Act 1882 will be eligible for subsidy under grid connected roof top and small solar power plant programs. For private and commercial there is no subsidy.

Yes, there is loan facility available from all National banks under (Priority Sector Lending) to promote solar energy.

Yes, solar power today is cheaper than grid power for a lot of consumer categories across most states. However, solar is a onetime investment while grid tariff keeps increasing every year. Therefore, by choosing to go solar today, you are locking in a fixed energy price for the next 25 years. If we talk about levalized cost for solar plant for a life cycle of the plant with considering finance cost the unit cost comes around Rs. 2/kWh.

1 MWp (1000 kWp) solar plant would require 3-6 months for total EPC cycle till installation and commissioning, and typically only 30-50 days of actual work at the site.

Solar photovoltaic panels have no moving parts, and therefore require little maintenance, which will include module cleaning with water every 2-4 weeks and preventive electrical maintenance every 3 months.

A 1 kWp Solar Grid Tie plant will generate around 4kWh units Per day and 1460kWh units in the first year. The generation of solar system depends on the location of the solar power plant and the cleaning schedule of the solar panels.

Yes, the power produced will be degraded at 0.5 -0.8 % each year. In the 25th year, the solar system will still produce 80-90% of the energy produced in the 1st year.

The solar panels have a warranty for a period of 25 years, however, the projected life is longer. For Solar Inverter 5 years’ warranty is there we can extend it up to 10 years by paying some additional cost. After 12 -13 years there might be inverter replacement required probably.

For rooftop plants the evacuation of solar power happens in the LT room, in most cases at 415Volt.

Metal rooftop solar system requires 15% to 20% lesser area than RCC solar rooftop or ground mount systems. Rooftop solar system also helps to reduce ambient room temperature by around 2 degrees Celsius as we put solar panels above roof so direct heat is not dissipated on the roof. Else both the systems are equivalent.

The cost of both systems are approximately the same on a per Watt peak (Wp) basis ground mount systems are slightly costly due to civil work is slightly heavy for foundation of module mounting structure.

Solar panels will be mounted with the help of special module mounting structure which are made up of Aluminum or MS Hot Dip Galvanized, which will be fixed onto the roof sheets with proper sealing methods so there will be no leakages to roof.

Yes, if the roof sheets belong to the standing seam segment, then solar panels can be installed without penetrating the roof. Also we can install module mounting structure with the help of special adhesive which is made by German company named lord. If we used penetrating solution like screw, then all precautions are taken to prevent leakage. Installation on RCC roofs does not require any penetration.

For installations greater than 1 MW in size, typically, central inverters are used, and these will be set up in a separate room, called the control room, mostly this are big utility scale ground mount projects. For rooftop installations, string inverters are used, and these are erected on the roof or on the factory floor with wall mount fitting or special fabricated mounting arrangement. Only we need to take care that direct sunlight should not fall on the inverter otherwise inverters comes with IP65 protections.

It will not in case of penetrating solution, as the roofs aren't tampered. Just as screws are used to fix the roof sheets, which are similar screws which are used to fixed metal sheets. we use nut and bolts on solar structures to fix the modules.

It depends on the demand-supply model based on global economics. While in India most of the modules are imported, the import duty increases the cost of PV panels, along with the various applicable taxes. So, it’s difficult to predict any cost

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How does a solar Photovoltaic (PV) power work?

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