As reported,February 19th,In the city of Schönberg, located in the northernmost German state of Schleswig-Holstein.A single-family villa experienced a violent explosion, with the outer walls completely shattered by the shockwave, and the entire building may require demolition.
Initial investigations indicate that the cause of the explosion was a fault in the photovoltaic energy storage system. By noon on the day of the incident, the photovoltaic power generation had fully charged the energy storage system, but...The excess electricity was not fed into the power grid but continued to charge the energy storage batteries, which led to the explosion incident.
Specifically, the Schenberger Volunteer Fire Department reported that a shockwave followed the explosion, followed by thick smoke. Although the fire was quickly brought under control, there were still intermittent flames sparking up.
Structural stability checks are underway for the building, with the surrounding area cordoned off.
"Demolition may be the only option," the fire department spokesperson said.The residence was unoccupied at the time of the incident, resulting in no injuries.Additionally, reports indicate that the homeowner was on vacation at the time of the incident.
According to reports, the building is equipped with solar panels and a home energy storage system. Affected products include Senec's V2.1, V3, and Home 4 models. SenecWe will replace the original ternary lithium batteries with brand new lithium iron phosphate (LFP) batteries.
Regarding residential battery manufacturers, no further information is available at this time.
Jan Feddern, the state president of the Schleswig-Holstein Electrical Industry Association, stated that an initial hypothesis suggests that the explosion was caused by the solar battery storage units overcharging due to clear weather, as they were unable to feed excess energy back into the grid.
Frieden emphasized that this is the first such incident in Schleswig-Holstein, and typically, such accidents only occur when there are technical issues with the battery itself or the charging control system.
However, statistics show that since March 2022, Germany has experienced multiple Senec battery fire incidents. Senec's response has been to remotely shut down all systems and switch to "regulation mode." In this mode, users can only utilize 70% of the rated output, with Senec promising compensation for the reduced availability.
