Cleancarbon AS (org. no. 913810376, Oslo) is a fourth-generation Norwegian family business that sources and processes specialised carbon materials, mainly low-ash carbon reductants for silicon-metal production, under the line “Specialized Carbon Materials since 1912”. Its Portuguese permanent representation, Cleancarbon Group AS – Sucursal em Portugal (NIF 980546672), is registered in the Z.A.L. logistics zone of the Port of Sines.
Status note: a Portuguese commercial-register lookup (eInforma) consulted by NorthSouth HQ on 29 October 2026 listed the Sines branch (NIF 980546672) as extinct. The registration details below are historical until current activity in Portugal is confirmed.
Cleancarbon describes itself as a Norwegian company with more than 100 years of experience in sourcing and processing carbon materials, which over four generations has grown from a local carbon trader into an international processing and sales business. Its focus is the alloy industry, and in particular silicon metal: the company makes low-ash carbon reductants with a specific size distribution and low impurity levels, used in furnaces that reduce silicon dioxide at around 2,000 °C. Management, sales, logistics and accounting sit at the Oslo head office in Madserud Allé. The operating company, Cleancarbon AS, is classed in the Norwegian register under research and experimental development in natural sciences and engineering; a sister company, Cleancarbon Bio AS, is registered for wholesale.
In Portugal the group operates through Cleancarbon Group AS – Sucursal em Portugal (NIF 980546672), a branch registered at Rua do Porto Industrial 3.06.07 in the Z.A.L. (logistics activities zone) of the Port of Sines. Its registered objective in Portugal is property mediation and leasing and directly related activities, which suggests the branch holds a site at the port rather than acting as a sales office. The name on the branch, Cleancarbon Group AS, does not appear among active entities in the Norwegian register today; the two active Oslo companies are Cleancarbon AS and Cleancarbon Bio AS. Cleancarbon AS reported operating revenue of NOK 13.0 million in 2025, up from NOK 2.1 million in 2024, with losses in both years.
Sines is Portugal’s deep-water bulk port and the obvious entry point for carbon and mineral raw materials moving by sea. A Norwegian carbon-reductant specialist holding a registered site there is a small but concrete sign that Nordic process-industry suppliers see Sines as a base for Atlantic logistics, alongside the larger energy and data-centre projects drawing Nordic capital to the same industrial zone.
Sources: cleancarbon.eu (company history, products, Oslo office); Brønnøysund Register Centre (org. no. 913810376 and 933522520, roles, NACE) and annual accounts 2023–2025; nif.pt (NIF 980546672, Sines). Fetched 31 October 2026.
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