While there are plenty of things that could affect your rooftop suitability, there are several key factors to take note.
With the average size of solar rooftop panels being approximately 2 metres by 1 metre, there is significant rooftop space needed to effectively install these panels. However, there might be differences depending on the brand and size of the solar panel system that you want installed.
It is important to take note of any possible obstruction or areas of concern on your roof as this might disrupt or change the layout of solar panels on your roof. These things can include vents, ponding water or chimneys. Although installers are able to work around these obstructions, it might generate further installation costs and reduce the effectiveness of the solar panels.
Amount of Shade
As we know that solar panels rely primarily on sunlight to function, shade can significantly diminish the amount of power that the solar panels generates and thus, affects the overall effectiveness of the panels. This means that if your roof is relatively shaded or has shadows cast on it for extended time durations (for example, due to large trees or neighbouring buildings), installation of solar on your rooftops might not be the best option. Just remember – the more direct sunlight your roof has, the better and more suited it is!
Angle or Direction
Have you heard that South facing roofs are known to be the best type of roofs for solar as it generates the most amount of electricity from its solar panels?
Time to bust this misconception! This is not true in Singapore and largely based on articles in the US. Locally, East facing roofs are the most optimal for solar due to having the highest and most direct sun exposure.
However, even when your roof isn’t directly facing the East, don’t be disheartened as this does not mean that your roof is not suitable for solar panels. The solar panels can still generate significant amounts of energy, even in areas that do not get abundant sunlight. Regardless of the direction and location of your rooftop, there is only a discrepancy of 20% in electricity produced.
Thus, you will certainly not be losing out on the productivity and functions of the solar roof system or the amazing benefits of solar.