This paper presents a methodology to maximize the self-sufficiency or cost-effectiveness of grid-connected prosumers by optimizing sizes photovoltaic (PV) systems and electrochemical batteries. In optimal sizing procedure, limitation on maximum injection in grid can affect energy flows, economic effectiveness investments, thus results. After explanation case study is presented, parametric analy...

Egypt is the largest wheat importer in world; however, it produces only half of 20 million tons that consumes annually. The population currently growing by 1.94% per year, and projections predict demand for will be nearly doubled 2050. Russia Ukraine are major exporters to globally, shipping grains from ports Black Sea. ongoing conflict aggravates already precarious food security situation many...

Aims: Afghanistan is overwhelmed with food insecurity, thus severe shortages in which a large percentage of the population lacks reliable access to supplies. Cereals such as wheat, rice, and maize play vital role country's security due their importance terms consumption production quantity. This paper estimates cereal self-sufficiency then makes balance forecast three major crops - cultivated o...