While delivery volumes have not been disclosed, BASF’s renewable ammonia is certified under ISCC PLUS, which uses a mass balance method to verify its sustainability.

Under this system, the product is allocated a renewable share through certified accounting rather than being produced entirely from green hydrogen.

The BASF deliveries are expected to add to OCI’s new line of fertilisers called “Pure,” which are made with lower-carbon hydrogen or ammonia instead of traditional fossil-based feedstocks.

The agreement with the German chemical firm comes as OCI continues to reshape its ammonia portfolio, having divested several major assets and placed its Geleen facility under strategic review.

Notably, the Dutch firm announced it would sell its entire ammonia logistics business to European nitrogen products manufacturer Agrofert for €290m ($334m) last month.

Lower-carbon imports from Ludwigshafen could help strengthen the long-term viability of the Geleen site while supporting OCI’s shift towards its new Pure fertiliser line.

BASF started up a 54MW Siemens Energy electrolyser earlier this year in Ludwigshafen. The system is expected to replace up to 8,000 tonnes of grey hydrogen used at the facility per year.