Polarium, a leader in energy storage solutions, proudly announces its role in the Offgrid Roslagen project, sponsored by the Swedish Post and Telecom Authority (PTS) installed at a Telia site. In collaboration with Powercell, Euromekanik, and Soltech, Polarium has managed to establish a system concept that extended the backup power capacity of a mobile base station from just a few hours to up to 110 days.

Modern mobile base stations typically rely on grid electricity, with diesel generators serving as conventional backup sources. The Offgrid Roslagen project addresses the urgent need for energy independence during extended outages by exploring hydrogen and advanced energy storage solutions to revolutionize emergency preparedness.

At a Telia mobile tower in Roslagen, a pioneering combination of solar panels, batteries, and hydrogen fuel cells is being tested. Polarium has supplied ten 100 Ah batteries and an interface unit connected to inverters, supporting autonomous operations and enabling on-site hydrogen production and storage.

About the Offgrid Roslagen Project

The project is funded by PTS and conducted in collaboration with Telia at one of Telia’s mobile base stations. The installation of the new energy source will be followed by a test period of at least one year, with completion expected by December 2025. The project will evaluate factors such as outcomes, cost efficiency, technical challenges, and more. Polarium participates together with Euromekanik, Powercell and Soltech.

Polarium remains at the forefront of delivering innovative technologies that enhance energy resilience, ensuring preparedness for both present challenges and future needs.