On March 3, the German fire department reported an explosion in an apartment building in southern Germany. The reason was that the battery energy storage system installed in the basement exploded due to a technical defect, followed by a fire in the basement, and the shock wave even pushed several doors and windows outwards. Pushed away and overturned the entire roof structure.

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Pictured: Firefighters took the battery out of the building and caught fire again
A fire department electrician pulled a fuse in the house and removed the battery storage system. Five people wearing respirators took the battery storage device out of the basement and put it into vats of water to cool. Fortunately, no one was in the building when it exploded, so no one was injured. The house is now uninhabitable.

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(Image credit: Fire Department)
On March 10, German battery energy storage system supplier SENEC admitted that the products involved originated from the company and responded to the explosion. SENEC announced to all users on its Facebook that it has remotely shut down all its home energy storage systems, including three products: SENEC.Home V3 hybrid, Senec.Home V3 Hybrid Duo, and Senec.Home V2.1.

SENEC said in the notice: The cause of the incident has not been identified, there is currently no evidence that the battery is the cause of the explosion, and there is no indication that there is any technical problem with its energy storage system, and the shutdown of the energy storage system is purely a “precautionary measure”.

SENEC said there were no casualties in the accident. The cause of the incident has not yet been determined. There is no indication that the battery was the cause of the explosion. Even the outside experts who were immediately involved did not believe that the energy storage device was responsible for the explosion, but safety concerns were its top priority and decided to take this clear step.

According to Senec, although the energy storage system is remotely shut down, the PV inverter is still active and can be directly self-consumed, so solar power is possible. SENEC also says that the only thing that doesn’t happen in standby mode is that battery energy isn’t stored and released because it’s isolated from the current.

SENEC promised to provide specific information on the restart as soon as a clearer understanding of the facts that led to the deflagration became available.

According to data, by the end of 2020, the total domestic battery energy storage capacity in Germany reached 2.3GWh, and the average size of battery systems installed in households also increased from 8kWh in 2019 to 8.5kWh in 2020. The issue of energy storage safety has been directly related to the safety of residents’ personal and property.

The SENEC official website shows that the SENEC battery energy storage products use “Samsung SDI high power density maintenance-free lithium batteries”, and the product information introduction shows that the SENEC.Home V3 hybrid energy storage capacity has two specifications of 4.5 kWh and 9 kWh.

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