Voltera-bg

About

Founded in 2025, Voltera-bg is a private headquartered in Sofia, Bulgaria with approximately 10-50 employees specializing in Hydrogen, Energy Storage.

Voltera Bulgaria is a deep-tech startup specializing in advanced energy system innovations. The company develops sealed electrolysis cell technology for efficient hydrogen production from low-quality water sources including seawater, innovative heat pump systems eliminating traditional refrigerants, and the ColteraTREC hybrid energy system that combines energy-harvesting modules for waste-heat electricity generation with heat-pump cooling. Applications target electric vehicle thermal management and data center cooling. The sealed electrolysis technology operates under pressure, generating pre-compressed hydrogen, and eliminates reliance on platinum-group metals or rare materials through affordable stainless steel construction. ColteraTREC systems are lightweight, built from low-cost materials, and achieve energy efficiencies approaching theoretical maximum without vapor-compression cycles.

Products