how big is solar panel
If you’re thinking of installing solar panels soon, you’re probably wondering how big they are, how much solar panels weigh, or how many solar panels you need for your own system installation. On average, a typical solar panel has a dimension of 6 x 6 inches, with 19 kg as a standard weight. This means that you need about 60 residential solar panels or 70 commercial solar panels to fit an entire roof. Read on to determine the number of solar cells that would be perfect to power your business or home.

Factors That Affect Solar Panel Size

The size of an entire solar system depends on the solar panel material used, the wattage it contains, or the type of solar panel system you need. Knowing these factors can help you choose the best solar panel size for you.


Residential solar panels are typically smaller in size than commercial solar panels. Commercial solar panels are designed to produce more solar power, which is required to power larger spaces. When solar panels are used for commercial sites, many solar panels or larger solar panel systems are essentially required.


The material used to build a solar panel can also affect its size. Cell solar panels are available in four different materials: monocrystalline, polycrystalline, thin-film, and PERC. When it comes to the best materials, most solar panel experts prefer monocrystalline or PERC because they are lightweight, versatile, and require less space.


A solar panel’s ability to carry more watts is usually related to its size. So, the larger the solar panel cell, the more watts it can support. It is important to realize, however, that most solar panels with the highest wattage are not necessarily more advanced. To generate the desired voltage, you can simply string or connect a series of solar panel cells.

Choosing The Correct Solar Panel Size

For a solid and effective installation, several aspects should be taken into account before deciding on the size of the solar power system for your property. To make sure your roof can sustain the size of PV system you want and that your solar panel system has the capacity for your needs, keep in mind the following:

Roof type

For a secure installation of solar panels, the roof must be stable and not brittle. Most wooden roofs become brittle over time, so installing a solar system on these roof spaces is not recommended. For best results when installing a solar panel system, a flat roof or a corrugated steel roof are the most compatible types.


The location of the solar panels on your roof is essential for collecting more solar energy to convert into power. Solar panels can gather sunlight up to their capacity with the right location and placement, allowing them to perform to their optimal potential.


When deciding on the best solar panel to install in your area, capacity should be your top priority. This is vital, so you don’t run out of energy when you need it. To provide enough power for your property, you must carefully select the type and size of solar panel system that can generate the ideal wattage for your home or business needs.


Because it will be directly exposed to weather and other elements, a great solar panel system should be built to last. Flimsy solar panel cells are easily damaged or broken, reducing the performance of your solar panel system. Enlist the help of a reputable PV system provider to ensure the long-term performance of your solar panels.


High-quality solar cells are not necessarily expensive. There are several solar panel installation suppliers that can provide durable yet reasonably-priced solar panel systems. Affordable, low-cost solar systems are desirable, as multiple solar panels need to be installed to meet the power demands of your homes and businesses.

Can your existing roof support your desired solar panel system size?

A roof made of high-quality materials can usually support the required solar panel installation. Moreover, if your roof is flat or corrugated steel, you can be confident that it will be strong enough to support your solar panel system. If you are unsure whether your roof system can sustain solar panels, we recommend consulting with solar panel experts, such as our team. Our professionals will inspect your existing roof and advise you on the best course of action for the ideal cell size for your solar panel installation.

Hire CEC-accredited installers to install your solar power system

We have a skilled installation team that includes Clean Energy Certified (CEC) solar installers and engineers. Our team works hard to guarantee that all Australian solar energy requirements are satisfied and that we give the finest possible solar installation results while respecting our customers’ job requirements. Best of all, all of our panels and inverters are CEC-approved and feature innovative monocrystalline Perc technology to maximize solar energy while significantly reducing carbon dioxide emissions.