1. Eurostat, Share of fossil fuels in gross available energy, (n.d.). https://ec.europa.eu/eurostat/web/products-eurostat-news/-/ddn-20210204-1 (accessed August 9, 2021).
2. Statista, Carbon dioxide (CO2) emissions in the European Union from 1965 to 2020, (n.d.). https://www.statista.com/statistics/450017/co2-emissions-europe-eurasia/ (accessed August 9, 2021).
3. Statista, Annual global CO2 emissions from 2000 to 2019, (n.d.). https://www.statista.com/statistics/276629/global-co2-emissions/ (accessed August 9, 2021).
4. IEA, World Energy Outlook 2019, Paris, 2019. https://www.iea.org/reports/world-energy-outlook-2019.
5. IEA, Net Zero by 2050, Paris, 2021. https://www.iea.org/reports/net-zero-by-2050.