Cite chart
IEA, Annual investment in energy efficiency in the buildings sector in the Net Zero Scenario, 2017-2030, IEA, Paris https://www.iea.org/data-and-statistics/charts/annual-investment-in-energy-efficiency-in-the-buildings-sector-in-the-net-zero-scenario-2017-2030-2, IEA. Licence: CC BY 4.0