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Solar panel dimensions in cm

solar panel dimensions cm

In this article we will mention the solar panel dimensions cm taking into account each manufacturer, since the measurements vary slightly from brand to brand.


What size solar panel do I need for my house?

Most UK homeowners install a 1 kW to 4 kW solar panel system on their roof, which will generate between 850 kWh and 3,400 kWh of electricity per year.

The size of your solar panel system will depend on 3 factors: your home’s electricity usage, how big your roof is, and your budget.

Solar panel dimensions cm

Average solar panel dimensions are around  165cm (height) x 100cm (width) x 4cm (depth)  for residential installations, although sizes vary very little between the various companies that make solar panel photovoltaic solar panels.

The table below shows the average solar panel size made by the  top solar panel brands  , based on an independent review we conducted:

solar panel brand
Average Solar Panel Dimensions
Canadian Solar
1.95m x 0.90m x 3cm
1.70 m x 1.00m x 4cm
1.60 m x 1.05m x 4cm
1.60 m x 1 m x 4cm
2 m x 1m x 3cm
Yingli Solar
1.65m x 1m x 4cm


solar cell size

solar cell , also known as a photovoltaic (PV) cell, generates electricity when exposed to sunlight.

Individual solar cells are small and generate very little electricity on their own, so a large number of them are needed in each solar panel to generate enough electricity for your home.

A solar cell is usually about  15 cm (height) x 15 cm (width)  . A residential solar panel is typically made up of 60 solar cells; although, again, this varies between solar panel manufacturers.

The following table shows how many solar cells make up the photovoltaic panels manufactured by the best solar panel brands:

solar panel brand
Number of solar cells in the solar panel
Canadian Solar
60 to 144
60 to 72
72 to 96
48 to 72
60 to 72
Yingli Solar


Solar panel system size

A solar panel system simply refers to the number of solar panels you have installed on your roof.

A single solar panel typically has a power output of between 250 watts and 350 watts.

However, most home appliances will need kilowatts (kW) of power to run and therefore you will need multiple solar panels to meet the demand for electricity.

Solar panel system sizes are measured in kW. Residential solar panel systems generally range in size from 1kW to 4kW.

A solar panel system larger than this is probably too big (and heavy) for your roof and generating too much electricity than is needed.

The table below gives you a quick overview of the most common solar system sizes for properties in the UK, including  how many solar panels  they are made up of and how much roof space they need to be installed.


What size solar panel do I need? Solar Panel System Size Comparison

Solar panel system size
Number of solar panels
Roof space required
8 square meters
14 square meters
21 square meters
28 square meters

How to size a solar panel system for your home

1. Calculate how much electricity you use

The higher your usage, the larger solar panel system you’ll need to cover most (or all) of your power usage.

The electricity consumption used by your home is measured in kilowatt hours (kWh) and this information can be found on your most recent energy bill.

The table below gives you an idea of ​​the size of solar panel system you’ll need, based on the number of kWh of electricity you produce per year and the size of your home.

Solar panel system size
Annual electricity production
Suitable for
850 kWh
1 adult
1,700 kWh
2 adults
2,550 kWh
family of 3
3,400 kWh
Family of 4+

Obviously, if you only want your solar panels to supplement a small amount of your home’s electricity use, you only need to get a small solar panel system.

2. Calculate the size of your roof

The size of your roof is directly related to it and will directly affect the size of the solar panel system you can install.

For most homes, the size of the ceiling shouldn’t be an issue unless you live in an apartment, for example.

If your property has a small amount of available roof space, it is advisable to install solar panels with a high efficiency rating of at least 19%.

A small solar panel system with high efficiency should produce a similar amount of electricity as a large solar panel system with a lower efficiency.

Ideally, solar panels should be installed on a south, west, or east facing roof that is out of shade.

It is not cost-effective to install solar panels on a north-facing roof or one that is partially (or completely) shaded, as your solar panels will not receive enough light to generate an adequate amount of electricity.

Only include the proper areas of your roof when calculating how big it is.

For example, if the back of your house’s roof faces south and you have a 5 meter x 3 meter area out of the shade, you will have 15 square meters of available roof space to install solar panels (enough for 2kW solar panel system).

3. Know your budget

The larger the solar panel system you install, the more it will cost. If cost is not an issue for you, we recommend installing the largest solar panel system possible.

This will maximize your return on investment (ROI) as you make higher profits from the feed-in tariff (a government-funded scheme that rewards homeowners for generating renewable electricity).

If you are limited by how much you can spend, many companies offer you the option of buying your solar panels in finance.

This can make them more affordable initially by spreading the cost out over several months, but keep in mind that you could end up spending hundreds (or even thousands) more than your solar panels are actually worth, as you’ll often be charged interest.