1. https://sdgs.un.org/goals(Accessed 29 May 2021).
2. IEA World Energy Balances 2020 International Energy Agency (IEA) 2020.
3. Example case.https://www.pv‐magazine.com/2021/04/08/saudi‐arabias‐second‐pv‐tender‐draws‐world‐record‐low‐bid‐of‐0104‐kwh/; 08/03/2021 release. (accessed 29 May 2021).
4. https://www.pv‐tech.org/prices‐fall‐below‐4‐cent‐per‐kwh‐mark‐at‐german‐solar‐auction/; 01/02/2020 release; and https://www.power‐technology.com/comment/portugal‐solar‐pv‐capacity/; 28/01/2021; andhttps://www.pv‐tech.org/solar‐tariffs‐in‐india‐hit‐record‐low‐after‐gujarats‐500mw‐auction/; 21/12/2020 (accessed 29 May 2021).
5. “Electricity Generation Costs 2020”; Department of Business Energy & Industrial Strategy (BEIS) Crown copyright (Aug. 2020)