Voltera-bg

About

Founded in 2025, Voltera-bg is a private headquartered in Sofia, Bulgaria specializing in Hydrogen, Energy Storage.

Voltera Bulgaria is a deep-tech startup specializing in advanced technologies for heat pumps, hydrogen production, and desalination. The company has developed a proprietary sealed electrolyzer cell that enables hydrogen production from low-grade water sources including seawater, operating under pressure to produce pre-compressed hydrogen. Their innovative heat pump technology eliminates noxious refrigerants and achieves near-theoretical maximum efficiency, specifically designed for automotive and data center thermal management. The company is leading the ColteraTREC project, which develops a hybrid energy system combining energy-harvesting modules from waste heat with heat pump modules for active cooling. Key advantages include use of affordable stainless steel instead of platinum group metals, elimination of vapor-compression cycles, and lightweight, low-cost construction without critical raw materials.

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