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Buildings Emit 40% of Global Warming Gases
20 May
Summary
- Buildings contribute nearly 40% of planet-warming emissions.
- Fossil fuels still dominate heating and cooling needs.
- Passive cooling and renewable energy offer viable solutions.
Buildings are responsible for nearly 40% of global planet-warming emissions, a figure that is on the rise. This significant contribution stems largely from the continued dominance of fossil fuels in heating and cooling systems. The UN's Global Status Report for Buildings and Construction highlights that buildings can either worsen climate risks or promote healthier living.
The report indicates that construction uses almost half of the Earth's extracted materials and accounts for 37% of global emissions. Despite an increase in building efficiency, it has not kept pace with the 20% growth in floor space over the past decade, leading to a 6.5% rise in building emissions since 2020.
Fortunately, effective solutions are available. Passive cooling techniques, such as shading and natural ventilation, are crucial for reducing indoor temperatures without energy consumption. Countries like Kenya and Pakistan, along with California, are mandating these practices. Additionally, integrating rooftop solar, district heating and cooling, and switching to renewable energy sources can significantly decarbonize the sector.
While upfront costs for greener solutions remain a barrier, experts emphasize the importance of considering lifetime costs and emissions. Implementing passive and active energy solutions is deemed critical for scaling up sustainable building practices and making them more affordable.
