COMPANY PROFILE / HYDROGEN ENERGY
Sunfire
An unlisted electrolyzer specialist with two technologies, pressurized alkaline and high-temperature SOEC, now moving to larger units and lower installed cost
Sunfire features in hydrogen because it is one of the few companies that makes only water electrolyzers and has delivered both a mature "pressurized alkaline" technology and a high-efficiency "high-temperature solid oxide (SOEC)" technology in real plants. Based in Dresden, Germany, it has more than 700 employees. In March 2024 it announced a €215 million Series E equity round, and in January 2026 it announced an order from Spain for two 100 MW plants (200 MW in total). In April 2026 it launched HyLink Alkaline 23, a 50 MW module, which it says cuts total installed cost by up to 50% (a company claim). At the same time, the company is unlisted and the sources we checked contain no revenue or profit figures. This profile sets out what it has committed, with whom it works and how much it discloses, using its official releases and product pages.
- Sunfire in 30 seconds, and where it stands in hydrogen energy
- The logo and how the name is written
- Where the company sits in the field
- Scale
- Resources committed to hydrogen energy
- What it has done so far
- What comes next
- What the company is aiming for in hydrogen energy
- Map of partnerships in hydrogen energy
- Technologies, products and services
- The risks this company carries
- Glossary, references and claim-to-source audit
1. Sunfire in 30 seconds, and where it stands in hydrogen energy
Sunfire is an electrolyzer specialist that does not commit to a single method but uses each for a different purpose Sourced. The company's own division is pressurized alkaline (AEL) for large projects run on electricity alone, and high-temperature SOEC where waste steam or heat is available. The depth of track record differs greatly between the two: pressurized alkaline has projects of 10 MW, 20 MW and 100 MW class, while the largest SOEC project disclosed is 2.6 MW Sourced. Being unlisted, the company has not published revenue, profit or shipments (none appear in the materials we checked) Not yet confirmed. Its size can be gauged only from the order book (MW) and headcount.
2. The logo and how the name is written
A note on names: the current legal name is Sunfire SE (a European company), converted on 2 April 2025 from a limited company (GmbH). The old name Sunfire GmbH still appears in the contact block of the website. HyLink is the company's product brand, not a legal entity. In 2024 it spun off its fuel cell business as Sunfire Fuel Cells, and now concentrates on electrolyzers. The logo was taken from the company's official website (sunfire.de).
Official site: https://sunfire.de/en/3. Where the company sits in the field
4. Scale
Because Sunfire is unlisted, no financial statements appear on its website. Its scale is read from the headcount, order book, production sites and financing it discloses Sourced.
| Indicator | What is disclosed | Date and source |
|---|---|---|
| Employees | More than 650, then more than 700 | April 2025, then January and July 2026 releases |
| Order book | Above 800 MW. Later orders (such as 200 MW in Spain) have been announced, but the current total is not disclosed | December 2024 and April 2025 |
| Revenue and profit | Not stated in the materials we checked | n/a |
| Sites | Dresden (headquarters and production), Solingen (production; electroplating of cells), Magdeburg (production), Berlin (strategic office). The site in Monthey, Switzerland, was to be moved to Germany by the end of 2025 | Company profile page; February 2025 release |
| Annual production capacity | A plan to build multi-gigawatt capacity by 2030. We could not confirm a current figure, because the capacity counter on the website was blank in the version we retrieved | February 2025 release |
| Planned investment | About €400 million (building series production and validating it in Saxony and North Rhine-Westphalia), of which the IPCEI grant is €169 million | August 2023 release |
"Above 800 MW" is the figure stated in December 2024 and April 2025, and is not a net figure after later orders, deliveries and cancellations. The company's year-end 2025 review also cites installed electrolyzer capacity and production capacity across Europe, but it gives no source for those market figures, so this article does not use them. We do not estimate Sunfire's revenue, profit or shipments Not yet confirmed.
5. Resources committed to hydrogen energy
| Resource | What primary sources confirm | Category |
|---|---|---|
| People | More than 700 employees. Co-founders Nils Aldag (CEO) and Christian von Olshausen (CTO), and CFO Frank Posnanski, among others. The R&D headcount is not disclosed | Sourced / not disclosed |
| Money (financing) | March 2024: a Series E equity round of €215 million (new investors LGT Private Banking, GIC, Ahren Innovation Capital and Carbon Equity; existing shareholders including Lightrock, Planet First Partners, Carbon Direct Capital, the Amazon Climate Pledge Fund and Blue Earth Capital), a European Investment Bank (EIB) term loan of up to €100 million, and about €200 million of previously approved, undrawn grants. January 2025: a €200 million guarantee line to secure customer advance payments and performance obligations, 80% of it backed by guarantees from the German federal government and the Free State of Saxony. August 2023: an IPCEI grant of €169 million | Sourced |
| Acquisitions and restructuring | 2011: Staxera (SOEC stack developer). 2021: Industrie Haute Technologies (IHT, Switzerland; pressurized alkaline) and MTV NT (Solingen; electroplating). 2024: spin-off of the fuel cell business. 2025: relocation of the Monthey site to Germany | Sourced |
| Universities, research bodies and public funding | Research on AEM (anion exchange membrane) electrolysis, "Integrate", with Fraunhofer IFAM, Ionomr Innovations, the National Research Council of Canada, Simon Fraser University and the University of Alberta (April 2023). The MultiPLHY consortium (Neste, CEA, ENGIE). The EU's GrInHy2.0 project. IPCEI. The EIB | Sourced |
| Manufacturing partner | Strategic partnership with Vitesco Technologies (now Schaeffler), using its automotive series-production experience (January 2023) | Sourced |
Status of main projects (company releases)
| Project | Location | Scale and method | Stage | Dates and notes |
|---|---|---|---|---|
| RWE (GET H2 nucleus) | Lingen, Germany | 100 MW (10 modules of 10 MW, pressurized alkaline) | Under construction (Not yet confirmed) | Ordered September 2024, days after RWE's final investment decision. Operation planned for the end of 2027. One third of RWE's 300 MW plan |
| RWE pilot plant | Lingen, Germany | 10 MW (pressurized alkaline), 200 kg/h | Operating | Opened 12 August 2024. Also an SOEC unit of 250 kW (first hydrogen in September 2023) |
| Uniper (Bad Lauchstädt Energy Park) | Saxony-Anhalt, Germany | 30 MW (six stacks; up to 4,000 tonnes a year) | Installation (Not yet confirmed) | First stacks delivered in 2025; commissioning described as "within reach". We could not confirm that it is operating |
| P2X Solutions (Harjavalta) | Finland | 20 MW (pressurized alkaline) | Commercial operation | Inaugurated 26 March 2025; the company calls it Finland's first industrial-scale green hydrogen plant. A FEED study for a 40 MW project in Joensuu began in autumn 2025 |
| Ren-Gas (Tampere) | Finland | 50 MW (5 modules of 10 MW, pressurized alkaline) | Being supplied (Not yet confirmed) | Selected November 2024; partnership as preferred supplier in July 2026. We could not confirm that it is operating |
| Repsol and others (Spain) | Bilbao / Cartagena / Muskiz | 10 MW (Bilbao) plus two 100 MW plants (Cartagena, Muskiz) | 10 MW being installed; 200 MW ordered (Not yet confirmed) | 10 MW announced April 2025; 200 MW announced 27 January 2026. The 200 MW is planned to be commissioned in 2029, each plant producing up to 15,000 tonnes of hydrogen a year, per the company |
| MultiPLHY (Neste) | Rotterdam, Netherlands | 2.6 MW (SOEC, 12 modules), about 850 °C, over 60 kg/h | Started up (performance tests still to come) | Started 6 October 2025; the company calls it the world's largest high-temperature electrolyzer in an industrial environment |
| 500 MW project FEED | Europe (customer not named) | 500 MW (pressurized alkaline) | Front-end engineering design (FEED) | Announced April 2024, with operation planned for 2028, but we could not confirm the customer or any final investment decision |
The cells of pressurized alkaline electrolyzers are made by coating them with metal by electroplating (galvanization). The company calls this its "most important production step" and says the metal coating on the cells is crucial for efficiency, robustness and durability Sourced. Its product page says cell galvanization raises cathode efficiency and corrosion protection. That is why it bought the electroplating specialist MTV NT (Solingen) in 2021, and why in March 2023 it opened an automated electroplating line (with a fully automated 500 MW plant said to be in preparation). The electrode coating bears on both reaction overpotential (efficiency) and corrosion and peeling in the alkaline electrolyte under fluctuating operation (life), so it is the core of the materials question (see our explainers on alkaline water electrolysis and on electrolyzer stacks and materials). However, the coating material, composition and thickness are not stated in the official materials (no specific metal is named) Not yet confirmed.
SOEC is a laminate of ceramics that runs at about 850 °C, and the company says it guarantees efficiency and output through a long-term service agreement that includes stack replacement. In other words, it takes on stack degradation by contract.
6. What it has done so far
| When | What happened | Why it matters |
|---|---|---|
| 2010-2011 | Founded in 2010. Acquired the SOEC stack developer Staxera in 2011 | The starting point for making SOEC a core technology |
| 2014-2015 | Opened an industrial-scale e-fuel plant in Dresden (one barrel a day). In 2015 validated an industrial SOEC prototype at Salzgitter and set up an SOEC competence center in Dresden | A pioneer in hydrogen and synthetic fuels |
| 2020 | Focused the business on hydrogen electrolysis. Founder Nils Aldag became CEO | The centre of gravity moved from fuels to electrolyzers |
| 2021 | Acquired IHT (Switzerland), adding pressurized alkaline to the portfolio. Acquired the electroplating company MTV NT | Took in proven alkaline technology and the plating step that is key to quality |
| 2022 | In the EU's GrInHy2.0 project, SOEC (first generation) demonstrated 84% LHV, AC efficiency. Commissioned pressurized alkaline at MPREIS in Austria (then Europe's largest single-stack alkaline electrolyzer). Won its first double-digit-megawatt order, from RWE | Real-plant track record with both methods |
| 2023 | January: partnership with Vitesco (now Schaeffler). March: series production on an automated plating line. April: AEM research "Integrate". August: IPCEI grant of €169 million | Building a gigawatt-scale production base |
| 2024 | March: Series E (€215 million) and EIB loan. Spring: spun off the fuel cell business. April: FEED for a 500 MW project. August: opened RWE's 10 MW. September: won RWE's 100 MW. November: selected by Ren-Gas | Funding secured, then 100 MW-class orders |
| 2025 | January: €200 million guarantee line. February: announced the move of Monthey to Germany. March: Harjavalta (20 MW) in commercial operation. April: became an SE; entered Spain. October: Neste SOEC unit (2.6 MW) started up. November: joined Rheinmetall's "Giga PtX" proposal | More operating references, and consolidation of sites |
| 2026 | January: 200 MW ordered in Spain. April: launched HyLink Alkaline 23 (50 MW). May: announced an SOEC test facility at BASF's Schwarzheide site. July: preferred-supplier agreement with Ren-Gas. 19 August: groundbreaking for the test facility | Scaling up to 50 MW class, and validating SOEC in an industrial setting |
7. What comes next
All of these are company plans and targets, not things that have happened Not yet confirmed.
Revenue, profit and shipments; the current total order book and the actual production capacity; confirmation that Bad Lauchstädt (30 MW) and Tampere (50 MW) are operating; the customer and final investment decision for the 500 MW project; any specific orders for HyLink Alkaline 23 since its April 2026 launch; the basis and conditions for the "up to 50%" cut in installed cost; the electrode coating materials of the pressurized alkaline cells; and the shareholding percentages.
8. What the company is aiming for in hydrogen energy
We separate what the company says from what we read into it. Inference marks our own interpretation of primary sources.
| What can be read | Primary evidence | Category |
|---|---|---|
| It aims to be a supplier for large industrial projects (tens to hundreds of megawatts) | A target of several gigawatts installed by 2030. It has scaled its product from 10 MW to 50 MW modules and describes them as for "triple-digit megawatt projects" | Sourced (company target) |
| The aim of scaling up is to lower total installed cost (TIC) | The company says HyLink Alkaline 23 cuts the customer's TIC by up to 50% through five levers: fewer modules, outdoor installation, centralized key components, prefabrication and integrated interfaces (the basis of comparison is not given) | Sourced (company claim) |
| It treats AEL as the volume product and SOEC as the high-efficiency product for sites with usable heat | The portfolio descriptions. SOEC is for "applications with on-site heat" and its largest disclosed project is 2.6 MW, while pressurized alkaline has projects from 10 MW to 100 MW class | Sourced / Inference (that AEL is the volume product) |
| It uses "made in Europe" as a strength and lobbies on policy | The 2024 review counts as a success that the European Commission introduced "resilience criteria" in the second European Hydrogen Bank auction. The 2025 review calls the implementation of RED III targets a key to reliable long-term demand | Sourced (statements) / Inference (the degree of policy dependence) |
| It is concentrating production in Germany to be more competitive | It explained the relocation of Monthey as strengthening competitiveness and securing profitable growth | Sourced (company explanation) |
Our reading that "AEL is the volume product and SOEC is still to come" rests on the difference in size between disclosed projects. Pressurized alkaline has MPREIS (3.2 MW), RWE (10 MW), Harjavalta in Finland (20 MW) and Bad Lauchstädt for Uniper (30 MW), plus three projects of 100 MW class (RWE in Lingen and two in Spain) Sourced. SOEC's largest disclosed project is Neste's 2.6 MW; the Salzgitter work validates the third generation for industrial use; and the RWE unit in Lingen is 250 kW Sourced. The SOEC product page shows specifications for a "10 MW module", but in what we checked we found no announced order or operation at 10 MW class. The company does, though, treat SOEC as being at the validation stage for its "most powerful" third generation, so the size gap may reflect a difference in development stage rather than in merit Not yet confirmed.
9. Map of partnerships in hydrogen energy
10. Technologies, products and services
All product figures are the manufacturer's stated values. We do not set values side by side across methods (AEL versus SOEC), scales or bases (LHV, AC or DC) to rank them.
| Product | What official materials say | Note |
|---|---|---|
| HyLink Alkaline 23 (pressurized alkaline, 50 MW module) | Standard pressure 30 bar(g). 1,000 kg of hydrogen per hour at 50 MW. Efficiency 67% LHV, DC. One module integrates ten 5 MW second-generation AEL stacks. Outdoor installation. "Up to 50% reduction in total installed cost for the customer" (company claim). Launched April 2026 | For a 100 MW project the number of modules falls from ten to two, and a dedicated electrolyzer building is no longer needed, per the company |
| HyLink Alkaline 22 (10 MW module) | Pressurized alkaline at 30 bar(g). The existing 10 MW module. Described as the configuration for RWE Lingen (10 modules), Ren-Gas (5 modules) and the Spanish 100 MW plants (10 modules each) | The previous generation to HyLink Alkaline 23. The company reports over 85,000 operating hours across its pressurized alkaline systems (2025) |
| HyLink SOEC (third generation, 10 MW module) | Runs at about 800-850 °C on low-pressure steam above 150 °C. Net production of 291 kg/h per module. Flexibility of 50-100% and 10% per minute. Hydrogen purity to ISO 14687 Grade B (after drying, with stated moisture conditions). Efficiency up to 89% LHV, AC (the expected value for the third generation, assuming 100% steam coverage). Proven so far is 84% LHV, AC with the first generation (GrInHy2.0, 2022) | The company says efficiency and capacity are guaranteed through a long-term service agreement (LTSA) including stack replacement. Data as of October 2024 |
| Stack production | Cell production and plating (Solingen); pressurized alkaline stacks are delivered pre-assembled and pre-tested to the site | The company says it covers the electrolyzer value chain itself |
| Services | FEED; production, pre-assembly and delivery; project management and on-site support; maintenance; digital services | FEED is offered to support the customer's final investment decision |
According to the product page and the release footnotes, 89% LHV, AC is an expected value for the third generation, and the figure proven so far is 84% LHV, AC for the first generation (2022, GrInHy2.0). The product page also gives "37.5 kWh/kg H₂ assuming 100% steam coverage" Sourced. Because SOEC splits steam at about 850 °C, heat can replace part of the electricity, which is the reason for its high efficiency. In return, the ceramic cells and seals and the metal interconnects must withstand degradation from high temperature and thermal cycling (see our explainer on solid oxide electrolysis cells). That the company guarantees efficiency and output with stack replacement included suggests that this degradation bears directly on its costs Not yet confirmed. The figure also presupposes a steam heat source on site, so it is not on the same footing as numbers for low-temperature electrolyzers.
11. The risks this company carries
| Risk | Detail | Category |
|---|---|---|
| Finances cannot be seen from outside | The company is unlisted and has not published revenue, profit or shipments. Progress can be followed only through the order book and project announcements | Not yet confirmed |
| Long gap from order to operation | RWE's 100 MW is planned for the end of 2027 and Spain's 200 MW for 2029. Most announcements are at the order or installation stage, and only some operation is confirmed | Sourced |
| Customer concentration | Three projects from RWE (SOEC, 10 MW, 100 MW). Energy majors, refiners and utilities are the main customers, so the fate of a few large projects could matter | Inference |
| SOEC has yet to prove itself at scale | The largest disclosed project is 2.6 MW. Specifications for a 10 MW module are published, but we found no 10 MW-class operation announced | Sourced / not confirmed |
| Dependence on demand and policy | The 2025 review says reliable long-term demand from implementing RED III targets is decisive. Its funding also relies on the IPCEI grant (€169 million), federal and state guarantees (80%) and the EIB loan | Sourced (statements) / Inference (the degree of reliance) |
| Restructuring | The fuel cell business was spun off (2024) and the Swiss site is being relocated (2025). We could not confirm whether the consolidation is going to plan | Sourced / not confirmed |
| The cost-cut claim cannot be verified | "Up to 50% lower total installed cost" is a company claim with no stated basis of comparison | Sourced (company claim) |
12. Glossary
- AEL (pressurized alkaline water electrolysis)
- Alkaline electrolysis run under pressure. The company says this reduces the need for downstream compression.
- SOEC (solid oxide electrolysis cell)
- Splits steam at about 800-850 °C. Said to be highly efficient where heat is available.
- AEM
- Anion exchange membrane. Electrolysis with it is said to combine features of PEM and alkaline methods.
- LHV / HHV
- Lower and higher heating value of hydrogen. The basis for efficiency; the same device gives different numbers on different bases.
- AC / DC
- Whether efficiency is measured on the alternating-current input (AC) or the direct-current side (DC). AC figures include rectifier and similar losses.
- TIC
- Total installed cost: not just equipment but buildings, installation and so on.
- FEED
- Front-end engineering and design, carried out before a final investment decision (FID).
- IPCEI
- Important Project of Common European Interest, a framework in which EU member states jointly support projects.
- LTSA
- Long-term service agreement, including maintenance and stack replacement.
13. References
- Sunfire Company profile (history, sites, management, headcount). https://sunfire.de/en/about/
- Sunfire Pressurized alkaline technology (HyLink Alkaline, stacks, cell plating, list of references). https://sunfire.de/en/alkaline-technology/
- Sunfire HyLink Alkaline 23 (product page: 30 bar(g), 50 MW, 1,000 kg/h, 67% LHV, DC). https://sunfire.de/en/products/hylink-alkaline-23/
- Sunfire HyLink SOEC (product page: third-generation specifications, expected 89% LHV, AC, LTSA). https://sunfire.de/en/products/sunfire-hylink-soec/
- Sunfire Portfolio (product overview and scope of supply). https://sunfire.de/en/products/portfolio/
- Sunfire Sunfire launches new 50-megawatt electrolyzer system (14 April 2026). https://sunfire.de/en/news/sunfire-launches-new-50-megawatt-electrolyzer-system-for-the-next-phase-of-industrial-green-hydrogen-scale-up/
- Sunfire Sunfire secures 200 MW electrolyzer orders in Spain (27 January 2026). https://sunfire.de/en/news/sunfire-secures-200-mw-electrolyzer-orders-in-spain/
- Sunfire Nordic Ren-Gas announces partnership agreement with Sunfire (22 July 2026). https://sunfire.de/en/news/nordic-ren-gas-announces-partnership-agreement-with-sunfire/
- Sunfire Sunfire to build electrolysis test facility at BASF site in Schwarzheide (11 May 2026). https://sunfire.de/en/news/sunfire-to-build-electrolysis-test-facility-at-basf-site-in-schwarzheide/
- Sunfire Future technology: Sunfire begins construction of SOEC test facility (19 August 2026). https://sunfire.de/en/news/future-technology-sunfire-begins-construction-of-soec-test-facility-at-industrial-park-lausitz/
- Sunfire Sunfire 2025: scaling, partnerships and European strength (year-end 2025 review). https://sunfire.de/en/news/sunfire-2025-scaling-partnerships-and-european-strength/
- Sunfire World's largest SOEC electrolyzer started up at Neste's Rotterdam refinery (6 October 2025). https://sunfire.de/en/news/worlds-largest-soec-electrolyzer-startet-up-at-nestes-rotterdam-refinery/
- Sunfire Sunfire converts to a European Stock Corporation (SE) (2 April 2025). https://sunfire.de/en/news/sunfire-converts-to-a-european-stock-corporation-se/
- Sunfire Sunfire optimizes production footprint: Monthey site to be relocated to Germany (19 February 2025). https://sunfire.de/en/news/sunfire-optimizes-production-footprint-monthey-site-to-be-relocated-to-germany/
- Sunfire Sunfire secures €200 million guarantee financing (7 January 2025). https://sunfire.de/en/news/sunfire-secures-e200-million-guarantee-financing/
- Sunfire Sunfire year in review 2024 (19 December 2024). https://sunfire.de/en/news/sunfire-year-in-review-2024/
- Sunfire Sunfire secures more than EUR 500 million to accelerate its growth (5 March 2024). https://sunfire.de/en/news/sunfire-secures-more-than-eur-500-million-to-accelerate-its-growth/
- Sunfire Sunfire builds 100-megawatt electrolyzer for RWE (11 September 2024). https://sunfire.de/en/news/sunfire-builds-100-megawatt-electrolyzer-for-rwe/
- Sunfire Sunfire and RWE celebrate the launch of green hydrogen production in Lingen (12 August 2024). https://sunfire.de/en/news/sunfire-and-rwe-celebrate-the-launch-of-green-hydrogen-production-in-lingen/
- Sunfire 250-kilowatt electrolyzer produces first hydrogen in Lingen (27 September 2023). https://sunfire.de/en/news/250-kilowatt-electrolyzer-produces-first-hydrogen-in-lingen/
- Sunfire Sunfire conducts FEED study for 500 MW green hydrogen project (18 April 2024). https://sunfire.de/en/news/sunfire-conducts-feed-study-for-500-mw-green-hydrogen-project/
- Sunfire Ren-Gas selects Sunfire electrolyzer for its Tampere e-methane plant (19 November 2024). https://sunfire.de/en/news/ren-gas-selects-sunfire-electrolyzer-for-its-tampere-e-methane-plant/
- Sunfire Sunfire delivers electrolyzer stacks to Bad Lauchstädt Energy Park (2025). https://sunfire.de/en/news/sunfire-delivers-electrolyzer-stacks-to-bad-lauchstaedt-energy-park/
- Sunfire For the first time in Finland's history, industrial plant for green hydrogen begins commercial operation (26 March 2025). https://sunfire.de/en/news/for-the-first-time-in-finlands-history-industrial-plant-for-green-hydrogen-begins-commercial-operation/
- Sunfire Sunfire enters Spanish market with new electrolysis project (9 April 2025). https://sunfire.de/en/news/sunfire-enters-spanish-market-with-new-electrolysis-project/
- Sunfire German industrial giants and tech companies announce Rheinmetall partnership for Giga PtX (3 November 2025). A proposal. https://sunfire.de/en/news/german-industrial-giants-and-tech-companies-announce-rheinmetall-partnership-for-giga-ptx/
- Sunfire IPCEI Hydrogen: 169 million funding for Sunfire (30 August 2023). https://sunfire.de/en/news/ipcei-hydrogen-169-million-funding-for-sunfire/
- Sunfire Sunfire launches serial production (7 March 2023). Automation of electroplating. https://sunfire.de/en/news/sunfire-launches-serial-production/
- Sunfire Sunfire and Vitesco Technologies become strategic partners (12 January 2023). https://sunfire.de/en/news/sunfire-and-vitesco-technologies-become-strategic-partners/
- Sunfire Sunfire and Fraunhofer IFAM launch project to scale AEM technology (18 April 2023). https://sunfire.de/en/news/hydrogen-innovation-sunfire-und-fraunhofer-ifam-launch-project-to-scale-aem-technology-for-industrial-applications/
14. Claim-to-source audit
| Claim in the article | Category | Source |
|---|---|---|
| Conversion to a European company (SE) on 2 April 2025, more than 650 employees and an order book above 800 MW (April 2025) | Sourced | Reference 13 https://sunfire.de/en/news/sunfire-converts-to-a-european-stock-corporation-se/ |
| Company history: founded 2010, Staxera 2011, SOEC prototype 2015, CEO change 2020, IHT and MTV NT 2021, 84% LHV, AC in 2022, spin-off of the fuel cell business in 2024, and the sites (Dresden, Solingen, Magdeburg, Berlin) | Sourced | Reference 1 https://sunfire.de/en/about/ |
| More than 700 employees, and the January 2026 order of 200 MW in Spain (2 x 100 MW, commissioning planned for 2029, up to 15,000 tonnes a year each) | Sourced | Reference 7 https://sunfire.de/en/news/sunfire-secures-200-mw-electrolyzer-orders-in-spain/ |
| The partnership agreement with Ren-Gas (July 2026), the 50 MW at Tampere and the reference to HyLink Alkaline 23 | Sourced | Reference 8 https://sunfire.de/en/news/nordic-ren-gas-announces-partnership-agreement-with-sunfire/ |
| HyLink Alkaline 23 specifications (30 bar(g), 50 MW, 1,000 kg/h, 67% LHV, DC, the claim of up to 50% lower TIC) | Sourced | References 3 and 6 https://sunfire.de/en/products/hylink-alkaline-23/ https://sunfire.de/en/news/sunfire-launches-new-50-megawatt-electrolyzer-system-for-the-next-phase-of-industrial-green-hydrogen-scale-up/ |
| Launch (14 April 2026), the reduction from ten modules to two for 100 MW, and the five levers | Sourced | Reference 6 https://sunfire.de/en/news/sunfire-launches-new-50-megawatt-electrolyzer-system-for-the-next-phase-of-industrial-green-hydrogen-scale-up/ |
| HyLink SOEC third-generation specifications (291 kg/h, 50-100%, 10% per minute, expected 89% LHV, AC and 37.5 kWh/kg, LTSA, data as of October 2024) | Sourced | Reference 4 https://sunfire.de/en/products/sunfire-hylink-soec/ |
| Cell plating raising cathode efficiency and corrosion protection, the stack delivery format, and the 100 MW-class projects | Sourced | Reference 2 https://sunfire.de/en/alkaline-technology/ |
| The product portfolio (HyLink Alkaline 22 / 23, SOEC) and scope of supply (from FEED to maintenance) | Sourced | Reference 5 https://sunfire.de/en/products/portfolio/ |
| The announcement of an SOEC test facility at BASF's site (May 2026), the groundbreaking (19 August 2026) and up to 89% LHV, AC | Sourced | References 9 and 10 https://sunfire.de/en/news/sunfire-to-build-electrolysis-test-facility-at-basf-site-in-schwarzheide/ https://sunfire.de/en/news/future-technology-sunfire-begins-construction-of-soec-test-facility-at-industrial-park-lausitz/ |
| The 2025 review: over 85,000 operating hours, Harjavalta, Spain, Bad Lauchstädt, Neste, and RED III as a key | Sourced | Reference 11 https://sunfire.de/en/news/sunfire-2025-scaling-partnerships-and-european-strength/ |
| Neste's MultiPLHY (2.6 MW, 12 modules, about 850 °C, over 60 kg/h, started 6 October 2025) | Sourced | Reference 12 https://sunfire.de/en/news/worlds-largest-soec-electrolyzer-startet-up-at-nestes-rotterdam-refinery/ |
| The relocation of Monthey to Germany and the plan to build multi-gigawatt production capacity by 2030 | Sourced | Reference 14 https://sunfire.de/en/news/sunfire-optimizes-production-footprint-monthey-site-to-be-relocated-to-germany/ |
| The €200 million guarantee line (80% backed by the federal government and Saxony, five years) | Sourced | Reference 15 https://sunfire.de/en/news/sunfire-secures-e200-million-guarantee-financing/ |
| The 2024 review: RWE's 10 MW opening and 100 MW order, the Hydrogen Bank resilience criteria, the fuel cell spin-off and the 500 MW FEED | Sourced | Reference 16 https://sunfire.de/en/news/sunfire-year-in-review-2024/ |
| Series E (€215 million, new and existing investors), the EIB loan of up to €100 million and about €200 million of undrawn grants | Sourced | Reference 17 https://sunfire.de/en/news/sunfire-secures-more-than-eur-500-million-to-accelerate-its-growth/ |
| RWE's 100 MW (10 x 10 MW, end of 2027, one third of the 300 MW plan) and the mention that it followed RWE's final investment decision | Sourced | Reference 18 https://sunfire.de/en/news/sunfire-builds-100-megawatt-electrolyzer-for-rwe/ |
| RWE's 10 MW (200 kg/h, opened 12 August 2024) | Sourced | Reference 19 https://sunfire.de/en/news/sunfire-and-rwe-celebrate-the-launch-of-green-hydrogen-production-in-lingen/ |
| RWE's 250 kW SOEC unit (first hydrogen on 27 September 2023) | Sourced | Reference 20 https://sunfire.de/en/news/250-kilowatt-electrolyzer-produces-first-hydrogen-in-lingen/ |
| The 500 MW FEED (operation planned for 2028, customer not named) | Sourced | Reference 21 https://sunfire.de/en/news/sunfire-conducts-feed-study-for-500-mw-green-hydrogen-project/ |
| Selection by Ren-Gas for Tampere (November 2024, 5 x 10 MW) | Sourced | Reference 22 https://sunfire.de/en/news/ren-gas-selects-sunfire-electrolyzer-for-its-tampere-e-methane-plant/ |
| First delivery of six stacks for Bad Lauchstädt (30 MW, up to 4,000 tonnes a year) | Sourced | Reference 23 https://sunfire.de/en/news/sunfire-delivers-electrolyzer-stacks-to-bad-lauchstaedt-energy-park/ |
| Commercial operation of Harjavalta (20 MW) on 26 March 2025 | Sourced | Reference 24 https://sunfire.de/en/news/for-the-first-time-in-finlands-history-industrial-plant-for-green-hydrogen-begins-commercial-operation/ |
| Supply of 10 MW at Bilbao to Basque Hydrogen (April 2025) | Sourced | Reference 25 https://sunfire.de/en/news/sunfire-enters-spanish-market-with-new-electrolysis-project/ |
| Rheinmetall's “Giga PtX” being a proposal | Sourced | Reference 26 https://sunfire.de/en/news/german-industrial-giants-and-tech-companies-announce-rheinmetall-partnership-for-giga-ptx/ |
| The IPCEI grant of €169 million and the planned investment of about €400 million (August 2023) | Sourced | Reference 27 https://sunfire.de/en/news/ipcei-hydrogen-169-million-funding-for-sunfire/ |
| Electroplating described as the “most important production step”, and the opening of the automated line (March 2023) | Sourced | Reference 28 https://sunfire.de/en/news/sunfire-launches-serial-production/ |
| Strategic partnership with Vitesco Technologies, now Schaeffler (January 2023) | Sourced | Reference 29 https://sunfire.de/en/news/sunfire-and-vitesco-technologies-become-strategic-partners/ |
| Participants in the AEM research “Integrate” (April 2023) | Sourced | Reference 30 https://sunfire.de/en/news/hydrogen-innovation-sunfire-und-fraunhofer-ifam-launch-project-to-scale-aem-technology-for-industrial-applications/ |
| Revenue, profit and shipments, the current total order book, actual production capacity and shareholding percentages | Not yet confirmed | Not stated in the materials we checked; this article does not estimate them. https://sunfire.de/en/about/ |
| Whether Bad Lauchstädt and Tampere are operating, the customer and final investment decision for the 500 MW project, and the basis for the “up to 50%” claim | Not yet confirmed | Not stated in the materials we checked. https://sunfire.de/en/news/sunfire-launches-new-50-megawatt-electrolyzer-system-for-the-next-phase-of-industrial-green-hydrogen-scale-up/ |
| The four-type classification of hydrogen companies (an electrolyzer specialist) | Our calculation | Our own classification. Company names are examples from this series |
| The reading that pressurized alkaline is the volume product and SOEC is still to come (size of disclosed projects) | Inference | Our own interpretation, comparing the sizes of disclosed projects |
| The reading that customers are concentrated among a few energy majors | Inference | Our own interpretation of the pattern of projects such as RWE's three |
| The degree of reliance on policy and public funding | Inference | Our own interpretation of the IPCEI grant, guarantees, EIB loan and RED III references |
Last updated October 2026 / Troy Technical
Figures in this article come from Sunfire's official website: its company profile, product pages and releases. Because the company is unlisted, we could not check financial statements and do not estimate revenue or profit. No research-firm market estimates, and no market figures without a stated source, have been used. Product performance values are the manufacturer's stated values, and values on different methods, scales or bases (LHV, AC or DC) are not set against one another. Company plans and targets are not yet confirmed and are not things that have happened. Passages marked "Inference" are this article's interpretation of primary sources. This article is not advice on handling hydrogen.