Green Walls: Green Infrastructure That Fights Climate Change

In Mediterranean climates (Csa), cooling energy reductions average 33.9 per cent, and temperature drops of up to 6 °C on building surfaces have been recorded during peak summer days. These energy savings can translate directly to fewer carbon emissions from electricity generation, and fewer operating costs, helping buildings meet climate resilience and performance goals.

Supporting Urban Biodiversity

Green walls offer more than temperature control—they can also provide critical habitats in vertical space, supporting urban biodiversity goals, especially in dense cities with little real estate for traditional ground based green space.

According to the Analytic Hierarchy Processes evaluation, vegetation coverage and LAI are the two most influential factors in determining the extent of biodiversity in green walls. These systems can:

• Support pollinators like bees and butterflies;

• Provide nesting and refuge for urban birds; and

• Help developers meet the UK’s new Biodiversity Net Gain 10 per cent policy requirements

Green walls allow cities to host more species without sacrificing developable land, making them an ideal tool for biodiversity conservation in dense urban areas.