Enapter Launches Stack 250 Electrolyser

Why this is here: The Stack 250 operates efficiently at current densities of 1–2 A/cm², reducing the need for expensive rare-metal catalysts commonly used in other hydrogen production systems.

Enapter AG released its Stack 250, a modular anion exchange membrane (AEM) electrolyser in Germany. The unit produces roughly 100 kilograms of 99.999% pure green hydrogen daily—ten times more than its predecessor. This advancement stems from over two decades of research into AEM technology and bridges the gap between small tests and large industrial needs.

The Stack 250 uses a modular design paired with Enapter’s CoreKraft AI system. CoreKraft manages renewable energy inputs, battery storage, and even combines AEM with alkaline electrolyzers for consistent operation. It avoids costly iridium catalysts, operating efficiently at 60–80°C and achieving 73–78% efficiency.

Enapter built upon technology originally developed by ACTA in Italy, acquiring the company in 2017. The company now has manufacturing facilities in Italy and China, and has delivered over 12,000 stacks to clients in 55 countries.

While the Stack 250 has shown promising output in testing, independent verification of its 100 kg/day capacity is still needed for financing approval. The company plans to continue scaling production to meet rising demand for green hydrogen.