12 November 2019 Key documents 2016 MDPI Sustainability of Off-Grid Photovoltaic Systems for Developing Countries 2018 IRENA Measurement and Estimation of Off Grid Hydro, Solar and Biogas Energy 2018 IRENA_Off-grid Renewable Energy Solutions - Global and Regional Trends and Status Report 2019 IRENA Off-grid Renewable Energy Solutions to Expand Electricity Access- An Opportunity Not to be Missed
