Sublime Systems has signed a multi-year agreement with Meta covering environmental attribute certificates associated with at least 180,000 tons of Sublime Cement production. The arrangement also gives Meta priority access to physical cement for future data-centre construction.

Announced on 12 November, the commitment is intended to provide revenue visibility to support development and financing of Sublime’s first commercial-scale plant. The certificates represent the environmental benefits of lower-carbon production and will be verified by an accredited third party.

Sublime’s electrochemical process uses electricity instead of conventional fossil-fuelled kilns. The company said engineering studies completed during 2026 at several US cement plants confirmed that its technology could be integrated with existing, underutilised facilities.

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The first commercial plant remains under development. No contract value, final plant location or commissioning date was disclosed. Sublime already has a separate binding offtake agreement with Microsoft