1. Paris agreement;Agreement,2015
2. FACT SHEET: President biden sets 2030 greenhouse gas pollution reduction target aimed at creating good-paying union jobs and securing U.S. leadership on clean energy technologies;The White House,2021
3. Renewable power generation costs in 2020;IRENA,2021
4. Global coal power,2019
5. Why did renewables become so cheap so fast? And what can we do to use this global opportunity for green growth?;Roser,2021