Carbon Pricing Could Slash Cement Emissions by 96% for a 12% Cost Rise

Cement production fuels roughly 8% of global CO₂ emissions. The process—mixing limestone with shale or clay, heating to 1,400 °C, then grinding—releases large amounts of carbon both from fuel combustion and chemical reactions.

Researchers from Stanford Graduate School of Business and the University of Mannheim applied an interactive marginal abatement cost analysis to the European cement market. This method evaluates how nine core low‑carbon technologies combine, rather than treating each in isolation. Out of 512 possible technology mixes, only 18 proved cost‑effective at current permit prices, and nine were already in use.

At the 2023 European Emissions Trading System price of €85 per ton (about $92), the model predicts a one‑third reduction in annual cement emissions. If the price rises to €141 per ton—a level within market expectations—emissions could fall 96%, while cement production costs would climb only about 12%.

"Within a certain range of carbon prices, you're getting a lot of bang for your buck," said Stefan Reichelstein, emeritus professor of accounting at Stanford. The finding challenges earlier estimates that full decarbonization would double cement costs.

The study’s framework also helps firms calculate the precise “green premium” needed to cover abatement expenses, aiding voluntary emission‑reduction pledges. Beyond cement, the approach can be adapted to steel, aluminum and other heavy industries that together account for 20‑30% of global emissions.

If policymakers allow carbon prices to reach the €141 threshold, the cement sector could achieve near‑complete decarbonization without imposing prohibitive costs on construction. Watch for upcoming EU carbon‑price reforms and industry adoption of the identified low‑cost technologies.