EPER, a Navarre-based group specialized in high value-added metal solutions for the onshore and offshore wind, defense, naval, and civil engineering sectors, has acquired 100% of the Basque company Chapanor, a benchmark in the manufacturing of metal structures and industrial boilermaking in Spain, with a focus on the railway sector.
This acquisition, the fourth carried out by EPER since the entry of Stellum Growth and Amixalan into its capital in 2023, will allow the group to expand its technical capabilities and diversify its sectoral presence. The resulting group will have five production centers, nearly 230 employees, and a consolidated turnover of approximately 36 million euros.
Across its facilities—comprising 22,000 square meters of production space and an additional 25,000 square meters of logistics area—the group works with various international clients including CAF, Siemens Gamesa, Vestas, GE, Nordex, Windar, Haizea Wind, Dragados, Navantia, and Urovesa, among others.
The transaction is part of EPER’s Strategic Plan for organic and inorganic growth, under which it previously incorporated the Galician companies TMG and Insder in 2024, and more recently Codesal, also based in Galicia. According to EPER, Chapanor’s integration will be carried out while maintaining its management model and focusing on its growth by strengthening its human team and leveraging operational synergies across the group.
Headquartered in Vitoria and with more than 25 years of experience and a solid client base, Chapanor operates a 4,000-square-meter facility equipped with state-of-the-art machinery. The company manufactures metal components for a wide range of industrial sectors, including railway, automotive, aerospace, and machine tools.
Borja Aroca, CEO of EPER, stated: “For the EPER Group, the addition of Chapanor represents an excellent opportunity to enter a demanding sector with great growth potential such as rail, through a company with an impeccable reputation and solid technical know-how. This operation not only strengthens our capabilities but also consolidates our position as one of the most relevant independent industrial groups in Spain in the field of metal structures, with the versatility needed to serve highly diverse industries.”
For his part, Iñaki Guinea, General Manager of Chapanor, commented: “Joining the EPER Group will allow us to tackle new industrial challenges and access larger-scale projects. We remain fully committed to service and quality, now backed by the strength of a group that shares our long-term vision and pursuit of excellence.”
Grant Thornton advised Chapanor on the transaction. Rocío Cruces Torres provided legal counsel to the buyer. Ernst & Young conducted the corresponding due diligence processes.
About EPER Metallic Solutions
EPER is a Navarre-based industrial group headquartered in Cintruénigo, founded in 2007. It specializes in the manufacturing of metal structures and boilermaking solutions for the onshore and offshore wind, defense, naval, and civil engineering sectors.
About Chapanor
Chapanor is a family-owned company with over 25 years of experience in boilermaking and metal structures, based in Vitoria-Gasteiz. A benchmark in the industrial sector, it stands out for its state-of-the-art technology, high specialization, and presence in sectors such as railway, automotive, and aerospace.
About Stellum Growth
Stellum Growth is an investment vehicle managed by Stellum Capital and promoted by Artizarra Fundazioa. It specializes in taking equity stakes in companies across various sectors, with the goal of supporting their growth and development plans through active involvement in management. Among its investors is Sodena, through its "Fondos Arraigo" (Roots Funds).
Amixalan Business Group
Amixalan Business Group is a Navarre-based business group operating in various strategic sectors. Its vision and approach are designed to generate impact in the global market through a business model based on a presence in key and future-oriented markets, growth across different business lines, and national and international expansion.
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