The document discusses the future of energy in Bangladesh. It outlines various renewable and non-renewable energy sources such as solar, wind, geothermal, hydropower, biomass, municipal solid waste, coal, crude oil, and natural gas. For renewable sources, it provides brief descriptions of how each works. It also notes that scientists in Bangladesh have identified reserves of heavy minerals in sea sands. The document is authored by Shamil Arfan Tuhin and is intended to outline energy topics for Bangladesh.