Guy Sidos1:25
Yes, concrete can be recycled. To go back to the figures: 7 to 8% is the percentage attributed to cement in recorded CO2 emissions, and it's a global average. In France, we are at 1.8%, less than 2% of the carbon footprint of cement in France, including imports. We are greener in Brazil, at 3.5% for example. So we are greener in France, and that shows the maturity of policies to reduce the carbon footprint of cement. The metric is per ton of cement, and then we add it all up based on needs. In France, we have made a lot of progress, and Vicat is at the forefront of this strategy and exports its know-how abroad. That's what we are doing today. We are starting a new production line in Senegal near Dakar with principles that allow us to produce clean cement. First of all, cement is not dirty, even if it is dusty; we are talking about greenhouse gas emissions. Today, without going into great detail, we have four levers to reduce the carbon footprint per ton of cement to zero. The first three levers are: modernization of equipment — 30% less energy; defossilization — replacing coal. For example, in France, the least expensive industrial energy is coal from Australia or South Africa, which is crazy. We replace that with the energy fraction of metropolitan waste that we feed into cement. You see the circularity. Plus, it pays: instead of buying coal from Australia, we are paid to eliminate waste that previously went into a hole. So it's virtuous. The third lever is what we call clinker factor reduction. We reduce the volume of active ingredient and add other products, notably activated clays. We just started a plant, helped by France Relance, which advanced the start of the project by 5 years. We have an activated clay plant near Nancy. It will reduce the carbon footprint of each ton of cement made with this activated clay by 40%. That's at Vicat; for other cement makers, you'd have to ask them. Some are behind, some are very advanced, and Vicat is in the leading pack. Once these three levers are activated, we have cut emissions in half, from 800 kg per ton of cement to 400 kg on average. To cut the rest, we need to capture and store in underground or underwater cavities, or transform. Transformation involves combining a hydrogen molecule with a carbon atom to remake the hydrogen-carbon bond, producing synthetic kerosene or methanol, which can then decarbonize air and maritime transport. So it's a cross-cutting logic that is the hallmark of transitions. It's not marketing; it's a reality. We are working on it with technological bricks. It's a medium- to long-term project because some technological bricks are not yet mature. To name just two projects: we have a project in California, BECCS Z0, which has suffered from the vagaries of subsidy allocations, but studies continue. The subsidies were planned at $500 million — a huge figure. And then that was taken away. The US policy was to support the decarbonization of the cement industry. Two plants were awarded this subsidy as pioneer plants that would inevitably spend more money to achieve a goal that everyone will have to reach in 20 years, but in 20 years it will be cheaper. So the policy brought a subsidy, the policy changed, the subsidy disappears. That's better for Vicat's cash flow because I had to match that subsidy. So it doesn't change the project even if $500 million falls through. It might be done later. We keep all doors open. We also have a project in France called VA, a capture and storage project for our plant in Montalieu near Lyon. It's the largest cement plant in France, an ultra-modern plant that we will equip with this project, and the carbon will go to the fosse because there is a pipeline in the Oiseau valley. So with this plant, we will decarbonize the industry of northern Isère and the Plaine de l'Ain, which is very dynamic and will be even more so with the arrival of Lyon-Turin.