How does the installation of solar panels affect building permits?

The installation of solar panels has become significantly more common in recent years, as more and more households and companies strive to utilize renewable energy. This development raises questions about how the installation of solar panels affects building permits in Finland. This article discusses the effects of installing solar panels on building permits and provides a comprehensive description of the process.

The need for building permits when installing solar panels

In general, the installation of solar panels does not require a separate building permit if the installation is done on the roof of an existing building and it does not significantly change the building’s appearance or structural safety. However, in certain cases a building permit may be necessary. The following is a list of situations where a building permit may be necessary:

  • Installation significantly affects the appearance of the building, for example in historically valuable buildings.
  • Panels are installed on the ground or on a separate rack that requires foundations.
  • The installation affects the structural safety of the building, for example the roof cannot withstand additional weight without reinforcements.

Building permit process

If the installation of solar panels requires a building permit, the process usually proceeds as follows:

  1. Planning: Before submitting the permit application, it is important to plan the installation carefully. This includes placement of panels, methods of attachment and possible structural changes.
  2. Permit application: The building permit application is submitted to the local building control authority. The necessary plans and reports are attached to the application.
  3. Processing: The building control authority processes the application and assesses whether it meets all the requirements. This may also include requesting statements from other authorities.
  4. Decision: Once the application has been processed, the authority makes a decision to grant or reject the permit. After a positive decision, the installation can begin.

Exceptions and special cases

There are also situations where the installation of solar panels may require special permits or notifications. For example, in listed buildings or areas with special planning regulations, the permit process can be more complicated. In such cases, it is recommended to contact the local building control authority already in the planning phase.

Summary

The installation of solar panels can affect building permits depending on the extent and location of the installation. In general, panels installed on the roof do not require a permit, but in certain cases a permit may be necessary. It is important to plan the installation carefully and, if necessary, contact the local building control authority. More information about the building permit process and requirements can be found, for example, on the website of the Ministry of the Environment.

Additional information about the installation of solar panels and building permits can also be found on Motiva’s website.