Solar power is gained through a photovoltaic (PV) module; a solar panel is placed on the top of your roof and is connected with the other solar panels. Solar panels can be used as a part of a larger photovoltaic (PV) system to produce and deliver electricity to meet residential and commercial purposes. Solar power system generates DC (Direct current) power under STC (standard test conditions).
Solar panels typically range from 230w – 300w in Australia. Its efficiency level is measured on the area of a module it covers i.e. efficiencies of solar system can be considered by MPP (Maximum power point) value of solar panels. Normally the solar power system offers 8% efficiency with 230 watt module and 16% efficiency with 230 watt module covering larger area.
Most modules on the market these days have more than a 19% efficiency rating which means technology is getting very good at increasing the amount of electricity generation without needing to increase the amount of space used. This efficiency is not so important when you have a very large amount of roof space and a small electricity requirement.
Guidelines to follow before buying Solar Power system
As a consumer you need to follow some guidelines before investing your money on Solar system. Some things to look out for are including but not limited to:
- Go for established company product built with latest technology.
- Don’t trust fast talking sales people because mostly they tell lies and fluffs!
- Avoid ‘stock is limited; ‘We are in shortage of stocks’ promotions.
- Asses your actual necessity before purchasing.
- Don’t compromise efficiency with reduction of cost.
- Do a good inspection of solar panel, inverter or battery along with other components.
- Do not purchase from grey market – sometimes you won’t even know you are doing it.
- Avoid low quality components.
- Make sure you are insured with warranty services.
- Try to gather more information about solar system to enhance your knowledge because at the end of the day you are only investing the money.
- Ask about component guarantee or substitution.
What a lot of people fail to realize is that every solar panel is different and just because they have the same size (5kW) doesn’t mean they will do the same job. So, consider these guidelines carefully.