Eighteenth International Conference on Environmental, Cultural, Economic & Social Sustainability

Abstract

Buildings account for the largest share of energy consumption in the world. In the United States, buildings consume more than 40% of their energy resources annually. This consumption is mainly related to cooling, heating and lighting in buildings. Due to the Covid-19 epidemic in the world since early 2020, many changes have taken place in the world. These changes have affected many jobs and changed people’s lifestyles. Many jobs were lost or a lot of work was done remotely. At different times, countries around the world limited their activities and applied quarantine. These events changed the energy consumption of buildings, and in some countries, such as China, electricity consumption was significantly reduced. Reducing energy consumption in buildings during the Covid-19 era also reduced greenhouse gas emissions. It seems that During 2020, global electricity demand falls by 5%, with 10% reductions in some regions. Statistics also show that countries in full lockdown are experiencing an average 25% decline in energy demand per week and countries in partial lockdown an average 18% decline. As a result, Global CO2 emissions are expected to decline by 8%, or almost 2.6 Gt, to levels of 10 years ago. This study examines the changes in energy consumption in buildings during the Covid-19 era in different countries and compares them with each other to determine the extent of changes and the negative or positive effects of this disease in 2020 and 2021 on energy consumption in buildings; and express greenhouse gas emissions.