In the municipality of Aquiraz, north-east Brazil, ceramic company Assunção Ceramic makes construction products including bricks, tiles and flagstones. Prior to harnessing carbon finance, it used wood from native forests to fire its kilns, thereby contributing to deforestation. To maintain the required 900ºC temperature, the company burned an average of 3,680 m3 of wood per month. Now, the company feeds the kilns with 100% renewable, organic materials such as sawdust, cashew wood, coconut husk and babaçu residues. In particular, the project protects the Caatinga biome, one of the world’s most vulnerable ecosystems, and saved some 500,000 tonnes of CO2 between 2010 and 2017.