Comsys control technology powers second-life battery system in Borås
The Swedish cleantech company Comsys AB announces the successful installation of a containerized second-life battery system in Borås, Sweden, featuring Comsys control technology at its core. The system demonstrates how repurposed electric vehicle batteries can become reliable, grid-connected energy assets that contribute to a more sustainable power system.
The system was delivered by Rebaba, a Swedish company specializing in circular energy solutions, and built in collaboration with El och Marinteknik, which handled the integration of the reused batteries into storage modules. By extending the lifetime of existing battery resources, the project reduces waste and supports a more circular use of materials.
With Comsys’ software and hardware integrated, the system achieves the stability and responsiveness required for second-life batteries to operate as part of the Nordic power grid. It enables the battery to supply or absorb energy in real time, maintaining the 50 Hz frequency balance critical to reliable grid operation.
“The project proves that it’s possible to build a fully Swedish, scalable battery energy storage system using second-life car batteries – without the involvement of the original car manufacturer.” Dan Liljengren, Head of Research & Innovation
Comsys AB, a cleantech company based in Lund Sweden, develops digital energy control methods and products to optimize and improve energy flow in a wide variety of applications and help customers to meet increasingly challenging demands set by standards and utility companies. Our technologies provide robust solutions for both grid operators and applications within industrial automation, building automation, data centers and the marine sector, to name just a few. They are also being increasingly used in electricity production and energy storage, primarily from solar and wind, in order to meet the constantly growing demands by grid operator owners around the world.
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