solar panels on the roof

Installing solar panels is a smart financial investment, which is why many homeowners are adopting this approach. When assessing offers from different providers, it is essential to consider multiple factors, including your property’s size, the intended use, the installer, etc.

This guide takes you through the most crucial factors to consider when shopping for solar panels.


The cost of the solar panels is perhaps the primary consideration when homeowners decide to invest in green energy. It is worth noting that each type of panel has its unique specifications, a factor that significantly affects pricing.

Pricing varies according to size, durability, brand reputation, certification, warranty, and quality of materials used in constructing the solar panel.

It is not advisable to choose solar panels based on their cost alone. For instance, you could choose a large panel that doesn’t fit on your roof. You could also purchase a cheap system that isn’t durable.

While sticking to your budget is advisable, ensure that you buy solar panels that suit your needs.


A solar panel’s efficiency refers to how much energy it produces after receiving a specific amount of sunlight. It influences the amount of electric power your system generates.

Generally, more efficiency translates to higher pricing. However, it is unwise to spend money on the most efficient solar panel since it can end up exceeding your energy needs.

Instead, assess your premises beforehand to determine the amount of electricity you need. Remember that you don’t require large solar panels to power your property (even if you can afford them, they aren’t a necessity).


A solar panel’s quality refers to the method used in its construction and the materials used in making it. Different manufacturers produce panels that vary in efficiency, durability, and pricing.

Some manufacturers control the entire production process. Such focus on research and development and place critical emphasis on quality. Others acquire cells from third-parties and assemble them. These usually produce affordable panels, although they are less reliable.

Types of Solar Cells

Different types of solar cells have varying efficiencies. Overall, crystalline silicon panels (monocrystalline and polycrystalline) offer more efficiency than amorphous panels. For equivalent wattage, an amorphous panel will offer less efficiency than a crystalline panel.


Regarding solar panels, size refers to the area occupied by the panel and its wattage. It is advisable to purchase a system that is big enough to meet your needs and also fits your roof. Often, your solar panel size depends on the types of cells used in its construction and its wattage.

Watts affect the output of a solar panel, albeit in ideal conditions. For example, a 150W panel will produce 150 watt-hours if it gets adequate sunlight. Knowing the wattage of your solar panels is vital because it affects the amount of power you get – underestimation leads to regular outages due to insufficient supply, while overestimation means that you overspend.

Temperature Coefficient

Temperature coefficient refers to how solar insolation affects the efficiency of your solar panels after installation. Ideally, it would be best if you purchase the panel with the lowest percentage per degree Celsius. This is because overheating accelerates the degradation of solar panels.


For a novice, choosing the right solar panels can be challenging. The points mentioned above are an excellent starting point for people looking to invest in green energy. Keep in mind that efficiency and wattage are the most crucial aspects to look out for when shopping for a panel. More importantly, ensure that you consider your property’s energy needs. If you find it difficult to decide, don’t hesitate to consult a professional installer.


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