CMBlu hits $1B valuation with €50M Series C backed by Samsung Ventures
What's the deal? CMBlu Energy, a German organic flow battery company, has closed a €50M ($58.76M) Series C round with participation from Samsung Ventures. The raise pushes CMBlu's valuation past $1B, making it a unicorn. All existing investors, including technology group Strabag SE, joined the round, which closed on April 30.
Why now? Demand for long-duration energy storage is surging as grids incorporate more renewable power. CMBlu's SolidFlow battery system combines organic redox flow technology with solid-state storage materials, targeting multi-hour storage — a segment where lithium-ion batteries struggle to compete on cost and duration.
Samsung Ventures' involvement signals growing interest from major industrial players in alternatives to lithium-based storage.
What could go wrong? Flow batteries remain a niche technology competing against rapidly falling lithium-ion prices. CMBlu must prove it can manufacture at scale and win contracts against better-funded incumbents. Organic chemistry-based systems also face questions about long-term degradation and commercial track records.
The signal: A unicorn valuation for an organic flow battery maker reflects a broader market conviction that the energy transition needs more than one battery chemistry. As grid operators plan for four-hour, eight-hour, and longer storage windows, investors are placing bigger bets on alternatives to lithium-ion — and paying up for companies that have differentiated technology and a credible path to deployment.
Read more: energy-storage.news
