Image: aRTI01 – Shutterstock.

Solar panels are installed to generate electricity using sunlight. Therefore, electricity production is highly dependent on the amount of sunlight they receive.

The shadow of a pipe, pipe, tree or other object between the sun and the photovoltaic system reduces energy production.

Not all users are aware of the impact of shadows on their solar panels. An issue with unwanted effects that you should be careful to resolve during installation.

Even a small shadow in any part of the photovoltaic system can significantly reduce the output of the whole. Some installers are not aware of the serious problem and hence users face some inconvenience after installation.

There are solutions to alleviate this problem and solve it wisely.

Main problems with shadows.

In a publication by Gil Masters, professor of civil and environmental engineering at Stanford University, titled “Renewable Energy and Efficient Power Systems”, it is demonstrated how the shading of one of the 36 cells of a small photovoltaic module can reduce power generation by more than more than 75%.

Therefore, the main problem we face due to shading is the reduction in power generation.

Shade has an impact on the power that a solar panel is supposed to generate. It is a big problem for the users. However, with proper installation, this problem should not exist.

To find the solutions to this problem, let’s first look at the internal architecture of a solar panel.

Internal connection of the solar panel.

A solar panel is a combination of several cells that together define the power of the photovoltaic system. The cells can be connected in series or in parallel.

  1. Impact of shading on the serial connection.

In a series connection, energy losses can reach up to 50%.

  1. Impact of shadows on the parallel connection.

In the parallel connection, losses can reach up to 90%.

Shadows are mainly of two types, horizontal shadow and vertical shadow. A shadow of about 1 meter can stop the operation up to 6 meters from the photovoltaic panel.

Shadow impact experience.


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Therefore, a small shadow can seriously affect the whole ensemble.

Solution to shadows.

  1. TwinPeak solar panel.

They are designed differently from conventional panels. A conventional panel is divided into two twin panels.

The double panel ensures durability and reduces installation costs. They are very efficient compared to conventional panels.

In case of shade, twin panels have a minimum energy loss of up to 25% in the series connection and 50% in the parallel connection.

  1. A good installation.

When installing, it is best to check the shadows and the possibilities they may have in the future. Installers should consider current and future shadows in the project and installation. All seasons of the year must be taken into account.

Image: Angelo Gilardelli – Shutterstock.

Suggestions for installers and homeowners.

The recommendation is that the project study and choose the location of the solar panels in a smart way, taking into account the shadows so that the solar panel does not have long-term problems.

Also check the solar panel distance between solar panel strings and other important factors.