Fire strikes another German home with solar roof tiles

A house fire in Kleve, Germany, involving a roof with integrated photovoltaic tiles required about 65 firefighters and lasted nearly five hours, with no reported injuries. The incident underscores ongoing safety challenges associated with building-integrated solar systems.

The fire started on June 9 at a single-family home in Kleve and was primarily confined to the roof, which featured integrated photovoltaic tiles and a green roof system. Firefighters faced difficulties due to hidden hotspots and energized solar modules that can continue generating electricity in sunlight, complicating efforts to extinguish the blaze.

According to Kleve fire department spokesperson Florian Pose, the fire department had to partially dismantle the roof to access and extinguish hotspots, prolonging the operation. The fire was fully extinguished by around 7:00 p.m., and the road was reopened. All occupants evacuated safely, and no injuries were reported. The cause remains under investigation.

Risks of Building-Integrated Solar Roofs in Fires

This incident highlights the safety risks posed by integrated photovoltaic roof tiles, which can remain energized during daylight, making firefighting more complex. As such systems become more common in Europe, fire departments face new operational challenges, including difficulty accessing conductors and the need for specialized procedures.

Recent Incidents and Growing Use of Solar Tiles

This fire follows a similar incident in Gütersloh, Germany, in May, where a firefighter was injured by electric shock while dismantling photovoltaic roof tiles during a roof fire. The increasing adoption of building-integrated photovoltaics (BIPV) in Europe is raising safety concerns, as these systems can generate electricity even during fires, and their structural integration makes access difficult for emergency responders.

“When the sun is shining, these modules are always energized.”

— Kleve fire department spokesperson Florian Pose

Unresolved Questions About Fire Safety of Solar Tiles

It is not yet clear what specific causes triggered the fire or whether design flaws in the solar roof contributed. Investigations are ongoing, and details about the exact origin and the safety protocols used are still emerging.

Future Safety Protocols and Regulatory Developments

Fire authorities are expected to review and update protocols for handling fires involving integrated photovoltaic systems. Manufacturers and regulators may also consider new safety standards to mitigate risks associated with building-integrated solar roofs as their adoption increases across Europe.

Key Questions

Are solar roof tiles more dangerous than traditional solar panels during fires?

Integrated photovoltaic tiles can remain energized during daylight, which complicates firefighting efforts and poses electrical shock risks, unlike standard panels mounted above roofs.

What safety measures can firefighters take when responding to fires involving solar roofs?

Firefighters may need to partially dismantle roofs, use specialized equipment, and follow updated protocols to safely access hotspots and disconnect power sources. Ongoing training is essential.

Will this incident lead to new regulations for solar roof systems?

It is possible that authorities and manufacturers will review safety standards and develop new regulations to address the unique risks of integrated photovoltaic roofing systems.

Could the fire have been prevented with different design features?

Preventative measures, such as improved electrical safety features and better heat management, might reduce fire risks, but investigations are needed to determine the cause of this specific incident.

Source: PV Magazine