Two cement producers have announced important updates affecting both the low‑carbon materials market and long‑term raw material security. Hoffmann Green Cement Technologies recorded significant growth in clinker‑free cement production, while Heidelberg Materials obtained a 30‑year mining permit for one of its key quarries.
Hoffmann Green: scaling up production and sales of 0%‑clinker cement
Hoffmann Green Cement Technologies published its first‑half 2026 results, reporting substantial growth in production volumes and sales. The company delivered nearly 40,000 tonnes of clinker‑free cement, representing +104% compared to the first half of 2025.
Revenue increased to €6.6 million (+87%), supported by raw‑material savings of €2.9 million, with expectations to reach €7.5 million by year‑end. The company also highlighted progress in international markets, including first deliveries in the United States and new partnerships in the EU.
Hoffmann Green’s formulations incorporate various mineral components, including air‑cooled blast furnace slag (ACS) and other secondary materials, enabling the production of low‑carbon cement without clinker.
Heidelberg Materials: 30‑year mining permit granted for Slite
Heidelberg Materials has secured a 30‑year mining permit for the Slite quarry on the island of Gotland (Sweden). The decision by the Land and Environment Court takes immediate effect and ensures long‑term raw material supply for one of Sweden’s most important cement plants.
The Slite quarry supplies up to 75% of the cement used in Swedish concrete production, making the permit strategically important for the national construction sector. The company is investing €134 million in environmental protection measures, including water resource management and ecosystem preservation.
The permit also supports the future development of the planned CO₂ capture and storage (CCS) project, which is currently paused pending final financing.
As part of its production modernisation, Heidelberg Materials continues to expand the use of slag‑based materials, including:
- Granulated blast furnace slag (GBFS) — used in low‑carbon cement blends;
- Air‑cooled blast furnace slag (ACS) — used in aggregates, construction mixes and stabilisation materials.
Both slag types are essential components of modern low‑carbon cement systems.
Conclusions
The updates highlight two major industry trends:
- Scaling clinker‑free technologies, where ACS plays a natural role in low‑carbon formulations;
- Strengthening raw‑material security, enabling stable development of GBFS‑based cement products.
The cement sector continues to move toward technologies that combine supply stability, reduced CO₂ intensity and modernised production processes.