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1
What is a solar photovoltaic system?
A solar photovoltaic system is a device that uses photovoltaic cells to convert solar energy into electricity. It converts sunlight directly into electricity that is supplied for domestic, industrial and commercial use.
2
What is a photovoltaic cell?
Photovoltaic cells are semiconductor devices capable of converting solar energy into electricity. They are usually made of polycrystalline or monocrystalline silicon, and when light strikes the cell, it creates a flow of electrons that produces electricity.
3
How does a solar PV system work?
Solar photovoltaic systems convert light energy into electricity through photovoltaic cells. When light strikes the PV cells, electrons are excited and flow, producing a DC current. An inverter then converts the DC current into AC current to supply electricity for use.
4
How much space is required for a PV system?
Space requirements depend on the capacity of the system and the efficiency of the PV panels. In general, a typic solar PV system can vary in size from a few square metres to tens of square metres.
5
How long does it take for a solar PV system to pay back its investment?
The time it takes to recover the investment depends on the system cost, the price of electricity per kWh, the sunshine situation and possible financial incentives. In general, the payback period for a solar PV system can be between a few years and a dozen years.
6
How many PV cells do I need to meet my electricity needs?
Your electricity needs depend on the power consumption of your home or business. The size of a solar PV system can be determined by your electricity needs and you can consult a professional for accurate advice.
7
Does a PV system require regular maintenance?
PV systems usually require less maintenance. Cleaning the surface of the PV panels regularly to ensure light absorption efficiency and checking that the wires and connections to the modules are secure are part of the maintenance.
8
Do solar PV systems work on cloudy days or at night?
Solar PV systems work best when the sun is shining, but they can also generate some level of electricity on cloudy days or at night. However, the efficiency of electrical energy generation may be reduced.
9
How efficient is solar PV technology?
The efficiency of solar photovoltaic technology is constantly improving. Traditional polycrystalline silicon PV cells typically have efficiencies between 15 and 20 per cent, while higher efficiencies can be achieved with high-efficiency monocrystalline silicon or other technologies.
10
Are solar PV systems environmentally friendly?
Yes, solar PV systems are environmentally friendly as they do not produce pollutants, greenhouse gas emissions or noise. However, there may be some environmental impacts involved in the manufacturing and handling of PV cells.
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