Webasto harnesses second life batteries for its German site

Multinational automotive company Webasto has successfully integrated a 1 MWh BESS into its energy system at its plant in Schierling, Germany. The BESS comprises 30 used CV standard second-life batteries, most of which come from pre-series production and are now being repurposed for energy storage.

The BESS is connected to a photovoltaic system via an Ethernet connection to the building management system at the Schierling plant and can store self-generated solar power.

The connection to the power grid is made via a low-voltage main distribution board in the energy center, which ensures flexible adaptation to meet changing energy requirements.

The addition of the BESS alongside the 750-kilowatt peak (kWp) photovoltaic system means Webasto can now supply its 45,000-square-meter plant in Schierling almost entirely through solar energy.

Four additional containers, each with a capacity of four megawatt hours, are planned for the future and will be implemented in stages depending on energy requirements and the availability of second-life batteries.

The plant produces batteries and roof systems for the company’s clients on several production lines. Webasto has been investing in battery production in the area since 2018, as part of an effort to improve the efficiency and viability of the site.

It said repurposing old used batteries to power its production lines is an important part of its sustainability strategy.

“By using used batteries as second-life batteries, we are extending their life cycle and making an active contribution to the circular economy. This is a further step in our strategy of acting in an ecologically and economically sustainable manner,” said Christian Gallner, plant manager at Schierling.

He added the project send out “a strong signal for sustainable management and resource efficiency” to competitors and clients alike.