1. Tracking SDG7: The energy progress report;International Energy Agency,2018
2. SDG7: Ensure access to affordable, reliable, sustainable and modern energy for all;United Nations,2020
3. State of the global mini-grids market report 2020;Sayar;J Chem Inform Model,2019
4. Off-grid renewable energy solutions to expand electricity access : An opportunity not to be missed;IRENA;Int Renew Energy Agency Abu Dhabi,2019
5. Off-grid electricity systems;Alliance for Rural Electrification,2020