1. Energy access outlook 2017,2017
2. International renewable energy agency (IRENA), united nations statistics division (UNSD), World Bank (WB), and World health organization (WHO). Tracking SDG 7: the energy progress report 2020,2020
3. Sustainable development goal 7;United Nations,2019
4. World energy outlook 2019,2019
5. Decentralized energy systems for clean electricity access;Alstone;Nat Clim Change,2015