ProLogium to go public in New York in $3.8 billion SPAC deal

ProLogium’s New York listing is a credibility test for the next wave of EV batteries, not just another clean-tech capital raise. The Taiwanese solid-state battery maker agreed to merge with Translational Development Acquisition Corp. in a deal that values it at about $3.8 billion, giving it a public-market route at a moment when investors are still wary of pre-revenue promises and long factory buildouts.

The transaction is designed to fund the hard part: manufacturing at scale. ProLogium said the cash will help expand production of its fourth-generation solid-state batteries and support the buildout of a new gigafactory in Dunkirk, France, where construction formally began with a groundbreaking on February 10, 2026. Company materials say the plant is intended to become its first manufacturing facility outside Taiwan and a major European production base for batteries that could serve not only passenger EVs, but also data centers, aerospace, robotics and defense.

That broader industrial pitch matters because the company’s commercial case rests on whether solid-state technology can move from promise to profit. ProLogium says it was founded in 2006, reached commercial-scale manufacturing in 2013 and has shipped more than 2.4 million battery cells since then. It also says it holds more than 1,100 patents and delivered the world’s first solid-state battery demo car with ENOVATE Motor in 2019. Those milestones help frame the company as more advanced than many early-stage battery start-ups, but they do not remove the central challenge: turning technical leadership into repeatable mass production at competitive cost.

The Dunkirk project is the focal point of that challenge. ProLogium says the site has an approved subsidy package of up to about €1.4 billion from the French government, underlining how closely Europe is tying industrial policy to strategic battery manufacturing. ProLogium’s own materials say ramp-up there is expected between the fourth quarter of 2028 and the first quarter of 2029, with mass production and deliveries beginning in the second quarter of 2029. That timeline gives investors a long wait before meaningful revenue could flow from the new plant.

The SPAC route also reflects a changing capital market. Translational Development Acquisition Corp. priced a $150 million IPO on December 23, 2024, at $10 a unit and listed on Nasdaq under TDACU. Its chief executive and chairman is Michael B. Hoffman, founder of Stone Capital Partners. The combined company is expected to list on Nasdaq under PRLG and close in the second half of 2026.

ProLogium has already been building the pieces around the deal. Its Taoyuan, Taiwan gigafactory opened in 2024, and its first overseas R&D center opened in Paris-Saclay in May 2024. The company says the Dunkirk project had completed environmental assessment and building permits by the end of 2024, then moved into construction this year. For investors, the question is no longer whether ProLogium can attract attention. It is whether it can meet the manufacturing, cost and delivery targets that would make this more than another hopeful market narrative.