The cause of a fire at Belgium’s first grid-connected lithium ion battery energy storage park is still unknown two months after the incident, the park’s operator Engie Electrabel, a subsidiary of French utility Engie, has confirmed to ESJB.
The fire on November 11 occurred during the commissioning phase at the Engie Ineo battery container at the company’s test site in Drogenbos, near Brussels. The 6MW project was the first time an ESS was to be used for grid Frequency Containment Reserve services in Belgium.
The ESS was set to use the ESS for grid balancing via the primary reserve managed by Elia, the Belgian transmission system operator.
The 1MW Ineo Scle container was heavily damaged, and two neighbouring containers by GE and Alfen suffered light, but repairable damage.
An Engie official confirmed that the fire started in the Ineo Scle battery container, and that the causes were not yet defined. The spokesman said the Engie Energy storage Park in Drogenbos was set to be a technology platform that would enable Engie to better understand how to operate batteries.
The suppliers of the ESSs at the Engie Energy Storage Park are Ineo Scle Sfe, Alfen, GE, and Younicos with a combined total of 6MW.
Alfen announced last September that it had delivered its 1MW system to the site. The company was responsible for the full end-to-end integration of the ESS, including the software platform for frequency control, integration in the local energy system and connection to the high-voltage grid.