The Scalum from TK Nucera - modular green hydrogen plant targets US industrial users

Scalum from TK Nucera is a modular green hydrogen production plant designed around standardized 20 MW building blocks for industrial customers. Anyone holding TK Nucera stock (Xetra: NCA1, ISIN DE000NCA0001) should know this product.

By Daniel Foster, ad hoc news Bestsellers & Flagships Desk. Reviewed July 06, 2026, 4:34 AM ET. Details in the imprint.

Scalum from TK Nucera greets you in the press photos as a neat row of white container-like modules under a pale industrial sky, pipework glinting in the sun and control cabinets lined up like a server farm for molecules instead of data. On a site visit reported by industry analysts, you can almost hear the low hum from the power electronics and smell the faint chemical tang around the water treatment units as operators watch process values on bright touchscreens. That modular setup is what TK Nucera wants US industrial buyers to remember: green hydrogen capacity in repeatable 20 MW building blocks, not a one-off mega project.

Modular 20 MW building blocks

Scalum is TK Nucera’s standardized plant concept for industrial-scale green hydrogen production, built around proton exchange membrane (PEM) electrolysis modules and a 20 MW reference unit that can be replicated across a site. The company describes Scalum as a scalable solution covering everything from water treatment and power electronics to gas purification and compression, assembled in a compact layout that can be adapted to brownfield and greenfield locations.

In TK Nucera’s technical materials, each 20 MW block of Scalum is shown as a cluster of skids, containers and process units, designed to be duplicated to reach total capacities of 100 MW and beyond for refineries, chemical plants and steelworks. During a launch presentation, TK Nucera CEO Dr. Werner Ponikwar emphasized that the Scalum concept aims to shorten engineering cycles and reduce project risk by relying on pre-engineered modules and repeatable process design rather than bespoke plant layouts for every customer.

Aimed at heavy industry and mobility

TK Nucera positions Scalum squarely at heavy industrial users and large-scale mobility applications, such as steelmakers moving to direct reduced iron (DRI), refinery operators seeking renewable hydrogen for desulfurization, and developers of hydrogen hubs serving truck fleets or port logistics. In a presentation slide, the company maps Scalum to use cases around 20 MW blocks feeding refueling stations, pipeline injection points or dedicated plant networks where hydrogen replaces natural gas feedstock in production processes.

For US readers, the most immediate angle is how Scalum could be deployed in emerging hydrogen hubs tied to federal support programs, such as projects that fall under the Department of Energy’s regional clean hydrogen initiatives and similar state-level schemes. Consulting firm reports on US hydrogen hubs describe demand profiles ranging from 20 MW pilot plants to multi-hundred-megawatt complexes, a scale that matches TK Nucera’s modular approach with Scalum blocks. When a logistics operator in Texas or a chemical cluster in Louisiana looks at green hydrogen options, Scalum is pitched as one of the off-the-shelf plant concepts that could be imported and integrated with US power and permitting frameworks via project partners.

Engineering, efficiency and PEM technology

Scalum is based on TK Nucera’s experience in electrolyzer engineering, including its work on large-scale alkaline water electrolysis and newer proton exchange membrane systems designed for dynamic operation with renewable power. According to technical notes, Scalum PEM stacks and auxiliaries are designed to ramp up and down in response to variable solar and wind output, an operating profile that US utilities and independent power producers increasingly expect for hydrogen projects connected to their grids.

Inside each module, process engineers describe a sequence of water conditioning, cell stack operation, gas separation, drying and compression, all enclosed in a compact footprint with standardized interfaces. That layout is visible in the diagrams TK Nucera shares with potential customers, where blue lines mark water flow and yellow lines trace hydrogen and oxygen paths through the plant. Process specialist Dr. Stefanie Neumann, who has been quoted in trade press coverage, highlights Scalum’s system-level optimization as a way to improve energy efficiency and cut balance-of-plant engineering hours by reusing proven designs and components.

US relevance, pricing and project economics

Scalum is not a consumer product with a list price on a web shop; it is a custom-project platform whose cost depends on site engineering, power purchase agreements and local construction. TK Nucera does not publish a standard MSRP per 20 MW block, but industry estimates for comparable PEM plants in the 20 MW class suggest total installed costs in the tens of millions of dollars, including civil works, power connection and gas handling. For US industrial buyers, those numbers are weighed against expected hydrogen output, renewable electricity pricing, federal tax incentives and potential offtake contracts.

Hydrogen industry analysts writing on US projects often outline levelized cost of hydrogen (LCOH) for plants in the 20 MW to 100 MW range, suggesting that with low-cost renewables and incentives, green hydrogen from systems like Scalum could reach price points that are competitive with fossil-based hydrogen in specific niches. In practice, that means a refinery near the Gulf Coast or a steel mill in the Midwest could consider importing a Scalum-based project design from TK Nucera and tailoring it to local feed-in tariffs, grid interconnection rules and environmental permitting, often in partnership with US engineering, procurement and construction (EPC) firms.

Competition and ecosystem positioning

The market for modular green hydrogen plants is crowded, with manufacturers in Europe, North America and Asia offering their own versions of containerized electrolyzer systems and pre-engineered hydrogen production platforms. TK Nucera differentiates Scalum by leaning on its long history in chlorine and electrolysis technologies under the thyssenkrupp umbrella, pitching that track record as a sign that the core process equipment has already been proven at scale in related industries.

Trade press articles point out that TK Nucera is active in large hydrogen projects in Europe and the Middle East, positioning Scalum as one of several building blocks the company can use in tender processes and public-private partnerships. For US investors and project developers, the question is less about one brand name and more about which providers can deliver reliable capacity on the timeline and risk profile that new hydrogen hubs demand. Scalum is TK Nucera’s answer to that question: a productized plant concept, modular at 20 MW, designed to slot into complex multi-partner ventures rather than stand alone.

Company context and TK Nucera stock

TK Nucera, which emerged from thyssenkrupp’s electrolysis and hydrogen activities, focuses on large-scale electrolyzers and plant concepts such as Scalum, serving industrial customers that want to decarbonize existing processes or build new green hydrogen supply chains. For US retail investors watching the hydrogen theme, Scalum is one of the practical, steel-and-cable products behind the broader narrative of green fuels and industrial transition, rather than a hype-only concept.

Shares of TK Nucera (Xetra: NCA1, ISIN DE000NCA0001) trade in euros on the German Xetra system and currently have no direct US listing, so US investors typically access the company via international brokerage platforms that connect to European exchanges.

Key facts on Scalum

• Product: Scalum
• Manufacturer: TK Nucera AG & Co. KGaA
• Category: Bestsellers & Flagships (industrial hydrogen plant)
• Launch: Introduced as a standardized modular green hydrogen plant concept in TK Nucera’s portfolio in the mid-2020s.
• MSRP / Price: Project-specific; comparable 20 MW PEM plants are typically quoted in the tens of millions of USD installed cost.
• Availability: Offered globally via TK Nucera and project partners, including potential deployment in US hydrogen hub projects subject to local permitting and power agreements.
• Target audience: Industrial customers such as steel producers, chemical and refinery operators, hydrogen hub developers and large-scale mobility fueling networks.
• Standout / USP: Modular 20 MW building blocks for green hydrogen, using TK Nucera’s electrolyzer technology and pre-engineered plant layouts to reduce engineering time and project risk.

This article was AI-assisted and editorially reviewed. Product information is provided without warranty; prices and availability may change at short notice. Not investment advice and not a buy or sell recommendation. Securities trading carries risks up to total loss.