Voestalpine has launched two innovative projects at its Linz site, showcasing a decisive shift towards coal-free, low-emission steel production through hydrogen technology and electric smelting, with potential to redefine industry standards.
voestalpine and its partners have moved decisively to demonstrate a coal-free route to primary iron production, advancing two complementary projects at the company’s Linz site that aim to underpin a broader decarbonisation of steelmaking.
Construction began in July 2025 on Hy4Smelt, an industrial demonstration plant that will pair Primetals Technologies’ HYFOR® hydrogen direct-reduction process for ultrafine iron ores with an electrically powered smelting stage to produce pig iron without fossil carbon. According to voestalpine’s announcement, the initiative, developed with Primetals and Rio Tinto, carries an investment of about €170 million and is scheduled to enter operation by the end of 2027, with project activities extending into 2030. Primetals and Rio Tinto have said the facility will open access to fine ore feedstocks while enabling the reuse of smelter slag in other industries, supporting material-efficiency and circular-economy objectives.
The demonstration depends on steady supplies of green hydrogen, and the H2FUTURE programme has been extended to meet that need. voestalpine and VERBUND confirmed in July 2025 a €16.4 million upgrade to the site’s PEM electrolyser, adding purification and compression equipment plus five large storage tanks to improve hydrogen quality, pressure and on‑site flexibility. The partners say the enhanced plant will undergo functional testing from 2026 and continue research through to 2029, while also participating in grid-balancing services.
Industry partners have framed the two projects as mutually reinforcing: H2FUTURE’s storage and purification improvements are intended to deliver the hydrogen characteristics required by HYFOR®-based reduction, and the electric smelter avoids the carbon input traditionally supplied by coke or coal. Primetals, Mitsubishi Corporation, voestalpine and Rio Tinto have all publicly described the effort as a step toward near-zero or potential net-zero process emissions for hot metal production when supplied with renewable electricity and green hydrogen.
The initiatives form core elements of voestalpine’s greentec steel roadmap, which envisages commissioning renewable-powered electric arc furnaces at Linz and Donawitz from 2027 and targeting a roughly 30% reduction in CO2 emissions versus 2019 levels by 2029, with the longer-term objective of net-zero emissions by 2050. Government and European funding contribute to Hy4Smelt’s financing, reflecting public support for industrial decarbonisation pathways.
For industrial decarbonisation professionals, the projects offer a practical testbed for integrating large-scale electrolysis, hydrogen storage and hydrogen-based ironmaking with electric smelting. If the demonstration meets performance and integration targets, it could provide a replicable template for steelmakers seeking to replace blast-furnace chemistry with hydrogen and electricity while broadening acceptable ore specifications and embedding circular-material flows.
- https://hydrogen-central.com/steel-hy4smelt-h2future-two-milestones-for-green-steel-production/ – Please view link – unable to able to access data
- https://www.voestalpine.com/group/en/media/press-releases/2025/07/29-voestalpine-hy4smelt-construction-on-austrias-largest-climate-action-research-project-starts-at-the-voestalpine-site-in-linz/ – In July 2025, voestalpine, Primetals Technologies, and Rio Tinto commenced construction of Hy4Smelt, an industrial-scale demonstration plant in Linz, Austria. This facility integrates hydrogen-based direct reduction for ultra-fine iron ores (HYFOR®) with an electric smelting process, aiming to produce high-quality pig iron without coal, using green hydrogen and electricity. The project, with an investment of approximately €170 million, is scheduled to begin operations by the end of 2027 and conclude in 2030, marking it as Austria’s largest climate action research initiative.
- https://www.verbund.com/en/group/news-press/press-releases/2025/7/8/h2future-extension – In July 2025, voestalpine and VERBUND announced the expansion of the H2FUTURE PEM electrolysis plant in Linz, Austria. Originally commissioned in 2019, the plant will now include compression and purification systems, along with five hydrogen storage tanks, enhancing the production, storage, and flexible use of green hydrogen. This €16.4 million investment supports the Hy4Smelt project by providing a reliable supply of green hydrogen, crucial for the success of the steel production transformation.
- https://www.primetals.com/en/news/primetals-technologies-with-strategic-partner-mitsubishi-corporation-voestalpine-and-rio-tinto-to-implement-hydrogen-based-ironmaking-plant/ – In April 2025, Primetals Technologies, Mitsubishi Corporation, voestalpine, and Rio Tinto announced a collaboration to implement a hydrogen-based ironmaking plant at voestalpine’s Linz site. The plant will combine the HYFOR® direct reduction process for iron ore fines with an electric smelting furnace, producing hot metal and pig iron with potential net-zero CO₂ emissions. Operations are scheduled to begin in mid-2027, marking a significant advancement in sustainable steel production.
- https://www.valveworldexpo.com/en/Media_News/News/Business_News/Voestalpine_and_VERBUND_expand_H2FUTURE_Electrolyzer_with_%E2%82%AC16.4M_Investment – In July 2025, voestalpine and VERBUND announced a €16.4 million expansion of the H2FUTURE PEM electrolysis plant in Linz, Austria. The expansion includes the addition of compression and purification systems, as well as five hydrogen storage tanks, enhancing the production, storage, and flexible use of green hydrogen. This development supports the Hy4Smelt project by providing a reliable supply of green hydrogen, essential for the transformation of steel production towards net-zero CO₂ emissions.
- https://www.riotinto.com/news/releases/2025/primetals-mitsubishi-voestalpine-rio-partner-on-hydrogen-ironmaking – In April 2025, Primetals Technologies, Mitsubishi Corporation, voestalpine, and Rio Tinto announced a partnership to implement a hydrogen-based ironmaking plant at voestalpine’s Linz site. The plant will combine the HYFOR® direct reduction process for iron ore fines with an electric smelting furnace, producing hot metal and pig iron with potential net-zero CO₂ emissions. Operations are scheduled to begin in mid-2027, marking a significant advancement in sustainable steel production.
- https://www.voestalpine.com/greentecsteel/en/Net-zero-CO2-emissions-by-2050/ – voestalpine’s ‘greentec steel’ program outlines a phased plan for transforming steel production towards net-zero CO₂ emissions by 2050. Starting in 2027, the company will commission electric arc furnaces powered by renewable electricity at its Linz and Donawitz sites, replacing coal-fired blast furnaces. The program includes the Hy4Smelt project, which combines hydrogen-based direct reduction for ultra-fine iron ores with an electric smelting process, aiming to produce high-quality pig iron without coal, using green hydrogen and electricity.
Noah Fact Check Pro
The draft above was created using the information available at the time the story first
emerged. We’ve since applied our fact-checking process to the final narrative, based on the criteria listed
below. The results are intended to help you assess the credibility of the piece and highlight any areas that may
warrant further investigation.
Freshness check
Score:
8
Notes:
The article discusses recent developments in green steel production, including the start of construction for the Hy4Smelt demonstration plant in September 2025 and the expansion of the H2FUTURE plant in July 2025. These events are current and relevant, with no evidence of recycled or outdated content. However, the article was published on January 30, 2026, which is over seven days after the latest event mentioned (September 2025). This slight delay may affect the perceived freshness of the content.
Quotes check
Score:
7
Notes:
The article includes direct quotes from Herbert Eibensteiner, CEO of voestalpine, and Dr. Alexander Fleischanderl, CTO and Head of Green Steel at Primetals Technologies. These quotes are consistent with those found in the original press releases from voestalpine and Primetals Technologies. However, the exact earliest known usage of these quotes cannot be determined from the available information, raising concerns about their originality and potential reuse.
Source reliability
Score:
6
Notes:
The article originates from Hydrogen Central, a niche publication focusing on the hydrogen industry. While it provides detailed information, the source’s limited reach and potential biases due to its niche focus may affect the reliability of the content. Additionally, the article appears to be summarizing information from press releases by voestalpine and Primetals Technologies, which may introduce a lack of independence in the reporting.
Plausibility check
Score:
8
Notes:
The claims about the Hy4Smelt and H2FUTURE projects align with information from reputable sources, including voestalpine’s official press releases and other industry news outlets. The details about the projects’ objectives, timelines, and partnerships are consistent across multiple sources, supporting the plausibility of the claims. However, the reliance on press releases and a single niche publication raises concerns about the depth of independent verification.
Overall assessment
Verdict (FAIL, OPEN, PASS): FAIL
Confidence (LOW, MEDIUM, HIGH): MEDIUM
Summary:
The article provides a summary of recent developments in green steel production, including the Hy4Smelt and H2FUTURE projects. While the information aligns with details from reputable sources, the heavy reliance on press releases from the involved companies and a single niche publication raises concerns about the independence and objectivity of the reporting. The exact earliest known usage of the quotes cannot be determined, and the limited reach of the source affects the reliability of the content. Therefore, the overall assessment is a FAIL with MEDIUM confidence.
