Taiwan-based solid-state battery developer ProLogium has announced plans to become a publicly traded company through a merger with special purpose acquisition company (SPAC) Translational Development Acquisition Corp. (TDAC).
The deal is expected to provide fresh capital for the company’s ambitious growth plans, including the construction of its large-scale battery manufacturing facility in Dunkirk, France.
Once the transaction closes, the combined company will operate as ProLogium Technology and is expected to trade on the Nasdaq stock exchange under the ticker symbol PRLG.
Major Step Toward Commercialization
Founded in 2006, ProLogium has spent more than two decades developing and commercializing solid-state battery technology. Unlike many competitors still focused primarily on research and development, the company has already achieved commercial-scale manufacturing and claims to have shipped more than 2.4 million battery cells since 2013.
The company gained industry attention in 2019 when it delivered what it describes as the world’s first solid-state battery demonstration vehicle in partnership with ENOVATE Motor. Today, ProLogium operates a 3 GWh battery facility in Taoyuan, Taiwan, where it manufactures its third-generation battery cells.
The Nasdaq listing is designed to accelerate the next phase of growth as ProLogium scales production of its latest fourth-generation solid-state batteries and expands into new markets.
Transaction Valued at $3.8 Billion
The business combination values ProLogium at approximately $3.8 billion on a pre-money, net cash-free basis.
The company expects to secure at least $250 million in proceeds through a combination of funds held in TDAC’s trust account and a planned private investment in public equity (PIPE) financing round. The additional capital will support manufacturing expansion, technology development, and commercialization efforts.
Beyond the immediate funding, becoming a public company would provide ProLogium with broader access to capital markets, allowing it to pursue future fundraising opportunities through additional equity offerings or debt financing.
ProLogium and TDAC’s boards of directors have unanimously approved the transaction, which is expected to close during the second half of 2026, subject to shareholder approval and customary regulatory requirements.
Fourth-Generation Solid-State Battery Technology
At the center of ProLogium’s growth strategy is its fourth-generation superfluidized all-inorganic solid-state battery technology.
The company says the new battery combines several characteristics that have long been considered difficult to achieve simultaneously, including high energy density, fast charging capability, strong low-temperature performance, competitive manufacturing costs, and enhanced safety.
A key feature is ProLogium’s proprietary triple-layer safety architecture, which includes:
– A non-flammable electrolyte
– An all-ceramic separator
– An active safety mechanism embedded within the electrolyte
According to the company, this design virtually eliminates the risk of thermal runaway, one of the most significant safety concerns associated with conventional lithium-ion batteries.
Independent testing has provided additional validation. TÜV Rheinland recently verified an energy density of 360 Wh/kg, while UL Solutions confirmed that ProLogium’s all-inorganic solid-state battery showed no thermal runaway during Heat-Wait-Seek (HWS) testing.
The company has built a substantial intellectual property portfolio around its technology, with more than 1,100 patents and patent applications worldwide.
Dunkirk Gigafactory Remains a Key Priority
A significant portion of the capital raised through the transaction is expected to support construction of ProLogium’s new battery gigafactory in Dunkirk, northern France.
The project has already secured approval for a subsidy package of up to €1.4 billion from the French government, with backing from the European Union.
The facility will initially manufacture ProLogium’s fourth-generation lithium-ceramic solid-state batteries and begin with an annual production capacity of approximately 0.8 GWh.
The company plans a phased expansion strategy:
– Initial production capacity of 0.8 GWh
– Expansion to approximately 4 GWh annually by 2030
– Full planned capacity of 12 GWh by 2032
– Potential long-term expansion to as much as 48 GWh
Construction activities are expected to progress through the coming years, with production ramp-up anticipated between late 2028 and early 2029. Mass production and customer deliveries are expected to begin in 2029.
Beyond Electric Vehicles
While electric vehicles remain a major focus, ProLogium is positioning its solid-state batteries for a broader range of applications.
The company sees significant opportunities in emerging sectors that require high-performance and ultra-safe energy storage solutions, including: AI data centers, aerospace, robotics, defense, energy storage systems, smart mobility solutions and industrial and off-highway vehicles.
CEO Vincent Yang described the transaction as a pivotal milestone in the company’s commercialization journey, saying the funding will help scale production, advance the Dunkirk project, and expand into new high-growth markets.
TDAC Chairman and CEO Michael B. Hoffman also expressed confidence in ProLogium’s future, citing the company’s technology platform and ability to manufacture next-generation batteries at gigawatt scale.
A Significant Moment for the Solid-State Battery Industry
The planned Nasdaq listing represents one of the most significant developments in the solid-state battery sector this year. While many battery startups continue working toward commercial viability, ProLogium is positioning itself as one of the few companies with proven manufacturing experience, large-scale expansion plans, and independently validated performance claims.
If the transaction closes as expected, ProLogium will gain the financial resources needed to accelerate production of its next-generation batteries and strengthen its position in the rapidly evolving global market for advanced energy storage technologies.
