International. The global building sector continues to grow, with an estimated area of 235 billion m & sup2; in 2016. The final energy use per building increased from 119 exajoules (EJ) in 2010 to almost 125 EJ in 2016. The use of fossil fuels in buildings remained almost constant from 2010 to approximately 45 EJ, according to the report of the United Nations Environment Program.
On a positive note, the world's annual carbon emissions related to buildings seem to have peaked, at least temporarily, around 9,5 gigatonnes of CO2 (GtCO2) in 2013, and then decreased to 9,0 GtCO2 in 2016. However, this decrease was due in large part to progress in reducing the carbon intensity of power generation, with direct emissions from stable buildings around 2,8 Gt from CO2. In contrast, CO2 emissions from building construction grew steadily, from 3.1 GtCO2 in 2010 to around 3.7 GtCO2 in 2016.
The energy intensity of the buildings sector (in terms of energy use by m2) continues to improve at an average annual rate of around 1.5%. However, the global floor area continues to grow around 2.3% per year, offsetting these energy intensity improvements. Continuing this trend in the coming decades will make it increasingly difficult to achieve ambitions for a world of 2 degrees centigrade (° C) or less.
The global building sector consumed almost 125 EJ in 2016, or 30% of total final energy use. Building construction, including the manufacture of construction materials, such as steel and cement, represented an additional 26 EJ (almost 6%) in the estimated global final energy usage. Accounting for the generation of upward energy, the buildings represented 28% of CO2 emissions related to global energy, with direct emissions in fossil fuel combustion buildings that account for about one third of the total. The construction of buildings represented another 11% of the CO2 emissions of the energy sector.
Globally, the buildings sector still does not reach its potential. CO2 emissions from buildings and construction increased by almost 1% per year between 2010 and 2016, releasing 76 GtCO2 in accumulated emissions during that period. A growing number of countries have implemented policies to improve the energy performance of buildings. However, a rapidly growing building sector, especially in developing countries, has compensated for these improvements.
Between 2010 and 2016, population growth, increased land area per person and increased demand for energy services contributed to a further increase of 57 EJ in energy consumption of buildings in 2010. This increase in the new demand for energy in buildings is equal to all the final energy consumed by Germany during this period.
This 2017 Global Status Report reconfirms the importance of buildings and the construction sector in global energy consumption and related emissions. He also points out that efforts to decarbonize the sector are progressing, thanks to the implementation of comprehensive policy frameworks, the deployment of low carbon and energy technologies, better approaches and solutions for building design and an investment market for improvement. While the pace and scale of improvement are not yet sufficient to meet global climate ambitions, there are notable outstanding examples that show that even greater effort can be made to achieve these objectives, while providing multiple economic, social benefits. , environmental and positive health.
To see the full report you can do click here.