phelas, a provider of long-duration energy storage solutions, secured €4.1 million (~$4.5 million) in a seed funding round led by E44 Ventures, an Israel-leading climate tech fund. It also saw participation from Axon Partners Group, Deutsche Telekom Hubraum Fund, BNV Partners, other investors, and existing angel investors. phelas specializes in the development of its Aurora long-duration energy storage, a proprietary Liquid Air Energy Storage technology that is modular, scalable, and tailored for integrating with renewable energy sources.