Today, the world emits 50 billion tons of CO2 equivalents of greenhouse gases (GHG) each year. As part of this, so-called "harder-to-abate" industries are responsible for 27% of the global CO2-emissions, being the second largest source of GHG emissions. Materials, steel, cement, aluminium, and chemicals are jointly responsible for almost two-thirds of these emissions. Directly affected by the generated emissions in the harder-to-abate industries is the construction industry, which relies on materials like steel and cement. According to the Global Alliance for Building and Construction, the construction industry emits 38% of global energy related CO2-emissions, with the expectation to grow if no urgent actions towards net-zero targets are implemented.