Box 1.1 Key terms used in this report .................................................................................. 15 Box 2.1 Working from home can save energy and reduce emissions.但是，多少？...................................................................................................................... 24 Box 2.2 How could Covid-19 affect the use of heating, cooling and ventilation systems in buildings?............................................................................................. 27 Box 2.3 Covid-19 impact on efficient building products: Insulation sales dip, but bright spots remain ................................................................................................. 31 Box 3.1 More efficient appliances are not more expensive: Evidence from Southeast Asia ........................................................................................................................... 39 Box 3.2 How could a slow recovery and slower appliance replacement rates affect efficiency and energy demand?............................................................................ 40 Box 4.1 Influence of government stimulus on industrial structure and energy demand after the last global economic crisis ...................................................... 46 Box 6.1 How will recent retirements of very large aircraft affect air travel if it returns to pre-crisis levels?.................................................................................................. 75 Box 9.1 Benchmarking industrial energy intensity in G20 countries ............................... 97.................................................................................... 62 Box 6.2 Low oil prices change oil tanker delivery routes .................................................. 65 Box 7.1 Sustainable recovery in the European Union ....................................................... 72 Box 7.2 How do stimulus policy announcements compare with the Recommendations of the Commission for Urgent Action on Energy Efficiency?