VoltStorage is a technology company.
VoltStorage has raised $18.0M across 4 funding rounds.
VoltStorage has raised $18.0M in total across 4 funding rounds.
VoltStorage GmbH is a Munich-based technology company founded in 2016 that develops and produces sustainable energy storage systems using redox flow battery technology, enabling 24/7 availability of renewable energy.[1][2][3][4] It offers Vanadium redox flow batteries for commercial, industrial, and agricultural enterprises, and Iron-Salt Battery (ISB) technology for large-scale grid and utility applications, solving intermittency issues in wind and solar power by providing long-duration storage (up to 100 hours) with low costs, high recyclability, non-flammable components, and over 10,000 charge cycles.[1][2][3][4] The company serves energy companies, farms, industries, and utilities, addressing the need for base-load capability from renewables while replacing gas peaker plants and reducing grid strain, with strong growth evidenced by €24 million in 2022 funding and €30 million in 2023 to scale production and commercialize ISB from 2025.[4][6][3]
VoltStorage was founded in 2016 in Munich, Germany, by Jakob Bitner (CEO), Michael Peither (CIO), and Felix Kiefl, who brought expertise in energy technology and sustainability to pioneer ecological redox flow batteries as a lithium alternative.[1][3][4] The idea emerged from the need to make renewables weather-independent, leveraging abundant materials like iron and salt instead of rare minerals, with early focus on Vanadium systems for commercial use and R&D on ISB for utility-scale storage.[1][3][4] Pivotal moments include building the world's largest operating fleet of flow batteries, earning MIT Technology Review's Innovator under 35 for its CTO, and securing major funding—€24 million in Series C (2022) from InnoEnergy and others, plus €30 million (2023)—plus EIB support to accelerate ISB commercialization.[3][4][6]
VoltStorage rides the global energy transition trend toward 100% renewables, capitalizing on surging demand for LDES to integrate intermittent solar/wind amid net-zero goals and grid modernization.[1][3] Timing is ideal as EU policies push storage to replace fossil peakers, with market forces like falling renewable costs and rising energy security needs favoring scalable, cheap alternatives to lithium amid supply chain vulnerabilities.[1][3][4] It influences the ecosystem by setting standards for sustainable batteries—accelerating commercialization via Europe's largest flow fleet and partnerships (e.g., EIB)—while competitors like Vanevo and Voltfang trail in ISB innovation, positioning VoltStorage as a key enabler for weather-independent grids.[2][3]
VoltStorage is primed to disrupt LDES with ISB rollout at utility scale from 2025, fueled by recent €30M+ funding for production expansion and growing renewable mandates.[3][6] Trends like AI-driven grid optimization, policy incentives (e.g., EU Green Deal), and raw material abundance will propel its growth, potentially capturing significant market share in a sector projected to boom. Its influence may evolve from pioneer to mass-market leader, fully realizing 24/7 renewables and pioneering the shift from fossil dependencies—transforming VoltStorage from a storage innovator into a cornerstone of global energy security.[1][3]
VoltStorage has raised $18.0M in total across 4 funding rounds.
VoltStorage's investors include SOSV, Bayern Kapital, Reimann Investors.
VoltStorage has raised $18.0M across 4 funding rounds. Most recently, it raised $6.0M Series B in July 2021.
| Date | Round | Lead Investors | Other Investors |
|---|---|---|---|
| Jul 1, 2021 | $6.0M Series B | SOSV | |
| Jul 1, 2020 | $7.0M Series B | Bayern Kapital, Reimann Investors, SOSV | |
| Aug 1, 2018 | $3.0M Series A | SOSV | |
| Feb 1, 2017 | $2.0M Seed | SOSV |