Enapter Launches Stack 250 Electrolyzer for Large-Scale Hydrogen Production

Enapter has introduced the Stack 250, an alkaline exchange membrane (AEM) electrolyzer stack designed to support large-scale hydrogen production. The stack produces approximately 100 kg of high-purity hydrogen per day, representing a 10-fold increase compared to the company's previous Stack 25 generation.

The units are configurable for multiple applications, including steel, cement, ammonia, and aluminum production, as well as hydrogen-based power plants and large-scale power-to-heat systems. Both containerized and skid-mounted models are available.

The modular design enables independent operation of each stack, allowing systems to adjust output based on variable renewable power availability from sources such as solar and wind. Enapter also developed the Stack 250 for hybrid plants ranging from 100 MW to the gigawatt scale, where AEM stacks operate during periods of insufficient renewable electricity, with alkaline electrolysis systems activated at full-load conditions.

The stacks are managed through CoreKraft, Enapter's energy management system, which operates the electrolyzers and coordinates connected solar plants, wind systems, battery storage, and other hydrogen infrastructure.

According to CEO Jürgen Laakmann, the majority of recent electrolyzer inquiries are in the megawatt range, with significant demand growth in Asia for gigawatt-scale capacity plants. The Stack 250 is intended to address this scaling requirement while enabling hybrid configurations that improve efficiency in renewable energy utilization.

Originally reported by Hydrogen Tech World. Read the full article →