Andrew Wade

Expert Q&A: Decarbonising concrete and cement

In-Depth

Cement and concrete underpin modern construction, but their associated carbon emissions are enormous, accounting for up to eight per cent of the global total. The Engineer quizzed an array of experts working on solutions to decarbonise the materials.

Meet the experts:


How does your solution help reduce the carbon emissions associated with cement production?

AS: We turn the huge amount of waste heat from cement production into clean, affordable and reliable electricity. Waste heat is the largest unused energy resource in the world. Our modules can be installed wherever waste heat is generated. As the energy-intensive cement industry seeks to achieve climate neutrality, waste heat recovery (WHR) offers a key solution. We’re talking about a massive potential: recovering the waste heat from all cement plants worldwide with our second-generation Organic Rankine Cycle (ORC) modules would generate power of a yearly volume of around 67 TWh which represents the electricity demand of all private households of more than 40 million European citizens. Harnessing this clean energy potential would save approx. 30 million tons of CO2 (depending on the considered electricity mix).

For a zero-carbon future in cement production, the industry needs to adapt and reinvent itself.

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