Another solid-state EV battery maker is going public to fund its next growth stage

Get the Energy newsletter
Daily energy & climate — solar, EVs, oil, the policy fights and tech bets shaping the transition. Free.
- ProLogium announced a SPAC merger with Translational Development Acquisition Corp to list on Nasdaq under ticker PRLG, valuing the company at roughly $3.8 billion and planning to close the transaction in H2 2026.
- ProLogium will use the proceeds to scale its 4th‑generation superfluidized inorganic solid‑state batteries, build a new gigafactory in Dunkirk, France, and expand into data‑center, aerospace, and robotics markets.
- ProLogium shipped over 800,000 cells from its Taiwan GWh‑class gigafactory opened in May 2024, and its latest batteries achieved 360 Wh/kg energy density—50 % higher than conventional lithium‑ion—and passed UL’s thermal‑runaway test.
- ProLogium joins QuantumScape, Factorial Energy, and Solid Power as the latest solid‑state battery firm to go public via a SPAC, accelerating its access to public capital.
- Vincent Yang emphasized that ProLogium is the only company globally that can publicly demonstrate a solid-state battery mass‑production line.
Why it matters: ProLogium secures a $3.8 billion valuation, giving it cash to build a French gigafactory by end‑2026, accelerating EV battery supply and reinforcing Nasdaq’s rally, while Taiwan’s high‑tech credibility rises amid a stalled weapons deal.




