Solar panel sizes
Solar panels come in different sizes and have different efficiency levels. How they convert the light to usable power differs. From as little as 10w to 410w and as already mentioned their efficiency also varies. Voltage also varies from 12 volts to 24 to 36 volts. When installing a solar panel onto a roof there are many considerations to be made. The most important being where your roof is facing. Is there shade on the roof? How are they going to be mounted on the roof? in Zimbabwe you should install panels on the north facing part of the roof to maximise the amount of power that is generated through your solar panels.
The task of installing solar panels is best left to professional installers as you can already see. There are too many considerations when it comes to installing solar panels properly. Another important consideration is the location of your solar system as shown by the map below. The amount of available light differs from area to area.
This may result in you requiring more panels to get the same amount of power than if you are in another area for example.
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