Reliably reducing the emissions in the building sector plays a crucial role if the 1.5°C climate target from the Paris Agreement is to be met. The observed trends show a significant increase in building energy use, especially in emerging economies. Counteracting these trends is absolutely essential, especially in the light of urbanisation, population growth and changing lifestyles. In terms of mitigating the climate impact of buildings, ensuring high levels of efficiency (i.e. very low energy needs, especially for heating and cooling) has the greatest potential for saving energy and emissions, and is at the same time the prerequisite for effective use of energy from renewable sources. Clearly defined targets and suitable metrics are essential to enable appropriate design decisions. Implemented projects clearly indicate that quality assured design and construction lead to reliable in-use energy performance. Effective policy packages to address opportunities and challenges are important drivers to support the uptake of state-of-the-art efficiency measures in the urban building sector.

如果要实现《巴黎协定》中规定的1.5°C的气候目标，可靠地减少建筑行业的排放量将发挥至关重要的作用。观察到的趋势表明，建筑能耗显着增加，尤其是在新兴经济体中。抵制这些趋势是绝对必要的，尤其是考虑到城市化，人口增长和生活方式的改变。就减轻建筑物对气候的影响而言，确保高效率（即非常低的能源需求，尤其是供暖和制冷）对节约能源和排放物具有最大的潜力，同时也是有效利用建筑节能的前提条件。可再生能源。明确定义的目标和合适的指标对于做出合适的设计决策至关重要。已实施的项目清楚地表明，有质量保证的设计和建造可带来可靠的使用中能源性能。应对机遇和挑战的有效政策方案是支持在城市建筑领域采用最新的能效措施的重要推动力。