Sunfire reveals new 50MW standardised plant for ‘triple-digit-megawatt’ projects

German manufacturer Sunfire has unveiled a new standardised 50MW alkaline electrolyser system, which it claims could cut installation costs by up to 50%.

The Hylink Alkaline 23 system integrates 10 of the firm’s second-generation 5MW pressurised alkaline stacks in a modular configuration designed for outdoor deployment.

According to Sunfire, this optimises capital expenditure by eliminating the need for a dedicated electrolyser structure or heating and ventilation infrastructure. It also said hydrogen production at 30 bar removes the need for downstream compression.

Christian von Olshausen, CTO of Sunfire, said the new system addresses numerous project economic factors to reduce total installed costs for customers by up to 50%.

The modular approach to electrolyser systems has seen increasing popularity with original equipment manufacturers looking to reduce project complexity and costs.

Manufacturers including Longi, Electric Hydrogen, and Nel have all designed large-scale standardised electrolyser plants driven by the need to reduce cost, risk, and deployment timelines in a nascent market.

Standardised, repeatable units enable factory-based manufacturing at scale, improving capital expenditure and easing supply chain constraints. From the customer perspective, they also simplify and accelerate installation, allowing projects to be built in phases better aligned with demand growth and renewable power availability.

While scalability improves, design rigidity can limit the ability of systems to optimise for site-specific conditions such as variable power inputs, water quality, or integration with downstream logistics.

Sunfire was also recently selected to supply 100MW worth of systems for two separate Repsol . Expected for commissioning in 2029, the facilities would utilise over 15,000 tonnes of green hydrogen for decarbonising oil-refinery processes.