The size of a solar panel should be chosen based on factors such as available space, energy needs, and budget. Solar panels can be combined to create larger systems, and the size of the system will depend on the energy needs of the user. Choosing the right size of the solar panel is important for maximizing energy production and cost savings.
Solar panels come in many sizes. Residential solar panels are usually around 1.6 to 2 metres tall and 1 metre wide. Are bigger solar panels better? Not necessarily. Solar panels with bigger dimensions may produce more power but may not always be the best fit depending on your roof space and energy needs. How heavy are solar panels?
The number and size of your solar panels depend on the size of your property and energy demands. A 4kW solar system is one of the most popular sizes for domestic solar systems, as it is typically appropriate for homes with 3 to 4 people. So in this case, you’d need something like 10 solar panels installed on your roof, each at a power of 400 kW.
The most important solar panel specifications include the short-circuit current, the open-circuit voltage, the output voltage, current, and rated power at 1,000 W/m2 solar radiation, all measured under STC. Solar modules must also meet certain mechanical specifications to withstand wind, rain, and other weather conditions.
So, when we talk about solar panel sizes, we’re looking at three specific aspects: power output (which is measured in watts), physical dimensions, and weight. Each of these factors plays a part in how well a solar panel will perform and fit into your available space. Below, we’ll break down what each of these factors mean and why they matter:
A small 3.5kWp system usually requires about 20 square metres of space, while a larger 5kWp system needs around 28 square metres. Make sure your roof can fit the number of panels you need to generate the energy you want. Calculations do not end with wattage. With Soly, you can calculate the yield of your solar panels using our online configurator.