Japan: The Renewable Energy Institute (REI) has published The Decarbonisation Pathway for Japan's Cement Industry, a report on strategies to ensure cement industry decarbonisation in line with a global 1.5°C climate change limit. The report found that the calcination of limestone gives rise to 60% of process CO₂ emissions from Japanese cement production. The report reviews possibilities for tackling emissions both from calcination and from other sources. In the former category, it noted scope for clinker factor reduction. Japan Cement Association members recorded an average clinker factor of 0.8 and Scope 1 emissions of 680kg/t of cementitious product in 2024. REI contrasted this with India-based Dalmia Bharat, which had a clinker factor of 0.6 and Scope 1 emissions of 467kg/t.
