Rooftop solar panels- How to calculate the area for setting up?

rooftop solar panels

Rooftop solar panels require ample space for optimal performance and maximum efficiency. Assessing your rooftop area is the first step in solar power installation to ensure the panels fit perfectly.

This blog states the key factors to consider when installing rooftop solar panels. These factors are as follows:

Availability of space

Rooftop solar panels installation begins with thoroughly inspecting the available rooftop space. It is necessary to consider several factors, including the size and shape of your roof and any potential obstructions that may impact panel placement. Keep an eye out for chimneys, skylights, vents and other structures that could limit the space for installing solar panels.

Taking into account the size, shape and potential obstructions on your rooftops will help you make informed decisions during the solar panel installation process, ensuring seamless integration with your building.

Roof adjustment

Assess the orientation of your roof to determine its solar potential. Ideally, the rooftop should have southern exposure in the northern hemisphere and northern exposure in the southern hemisphere, ensuring exposure to maximum sunlight throughout the day. East and west-facing roofs are also suitable but might receive less sunlight. Additionally, evaluate the slope of your roof. Solar panel installation may require additional mounting equipment or adjustments depending on your roof pitch.

Sun exposure

Consider the sun exposure your roof gets all year round. Judge the shadows that can fall on your roof from nearby trees, poles, buildings and other structures. Shadows impact the performance of solar panels, making it essential to minimise the amount of shadow cast on the panels during peak sunlight hours. Tools like solar mapping websites or solar installers can provide valuable insights into your solar rooftop’s maximum potential.

Calculating the area for setting up rooftop solar panels

The size of rooftop solar panels depends on their power output, design, and technology. The size of the entire solar power system depends on the number of panels installed, which determines the desired power output and available rooftop space. The size of the overall rooftop system can range from a few hundred square feet for a small residential installation to several thousand square feet for larger systems.

To know the required area for your solar panel system, multiply the surface area of one solar panel by the number of panels required for the entire system. This will give you the total rooftop area required to install your solar power system.

The total calculated amount is assumed to be the total area where panels can fit side by side or back to back. In practicality, the installation is different. We have to leave space between the rows and columns of the panels so that the panels can be easily cleaned and maintained. There should be some space left for the evaluation of the plant.

The solar panel system must receive direct sunlight for at least 5 hours each day, so make sure the area is free of shadow-casting elements like trees, neighbouring buildings, etc.

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