Featured in Spotlight on cells – 10-2025

Energy storage reaches new heights

On the Qinghai-Tibet plateau, Chinese company Huizhou Roypow Technology Co. Ltd. (Roypow) has deployed what it claims is the world’s highest altitude energy storage system, operating in combination with diesel generators to power a major infrastructure project in a remote, offgrid location. pv magazine spoke with Roypow project manager Li Tiancong about how the batteries dramatically reduce fuel consumption and energy costs for the site, and the challenges of operating energy systems in harsh, high-altitude conditions.

By

Mark Hutchins

02 Oct 2025

Thin air at high altitudes reduces cooling efficiency and brings other challenges to BESS operation. | Image: Roypow

At a remote site north of the Himalayas, China Railway 12th Bureau Group Co. Ltd. is working on what is only described a “major national infrastructure project.” The project requires power for a stone crushing and sand production line, concrete mixing, and other construction machinery, as well as for staff living quarters at the site. …

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