Average annual investment in wind and solar power in the United States and Europe, before and after 2009 Openexpand
Change in air quality index and rush-hour traffic congestion before and after lockdowns in selected cities, 2019 compared to April 2020 Openexpand
Household bill reduction potential to 2025 of investment in efficiency improvements in buildings Openexpand
CO2 emissions savings possible from coal-to-gas switching for different units at different gas prices, 2020 Openexpand