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Bangladesh has encountered several challenges, including issues like overpopulation, energy shortage, and global warming for the last few decades. Addressing the increasing energy demand has become a crucial concern because of rapid increase in population and lack of growth in the economic. The electricity production of a country heavily relies on fossil fuels, particularly natural gas, which makes up approximately 54% of the current installed capacity. Bangladesh is an agrarian nation and biomass stands out as a source of renewable energy having significant potential to mitigate the demand for heat and electricity. Biomass resources in the country mainly comprise animal dung, agricultural crop residuals, solid waste from municipalities and forest residues. The existing biomass resources contribute to producing a high amount of energy and content of around 1574.16 PJ of energy equivalent to 437.28 TWh of electricity in which agricultural residues, animal manure, municipal solid waste, and forest residues impart around 852.32 PJ, 399.04 PJ, 112.16 PJ, and 210.64 PJ of energy respectively. This paper explores the extent, possibilities, and technologies associated with biomass energy conversion. Additionally, the study delves into the several biomass projects that the government, as well as non-governmental groups, are working on for environmental sustainability along with plans, challenges, and methods that are being utilized to encourage biomass technologies across Bangladesh. [Display omitted] • The biomass potentiality in Bangladesh for heat and electricity generation is emphasized. • The energy scenario and necessity of alternative energy sources in Bangladesh are discussed. • The available energy conversion technologies from biomass in Bangladesh are presented. • The existing biomass resource content of around 1574.16 PJ (437.28 TWh of electricity) of energy. • The economic aspects and challenges of biomass conversion into energy are discussed. [ABSTRACT FROM AUTHOR]

A developing country such as Bangladesh, where economic development without compromising the eco-friendly environment is a burning issue, needs huge supply of power. Having very limited fossil fuels, sources of renewable energy such as solar, wind, biomass and limited hydro power are the probable alternatives to offset energy crisis in Bangladesh and similar other countries. Over three-quarters (76 percent) of Bangladeshi people are out of on-grid connected electrical power supply. Undeniably, it has limited natural gas being used for a large variety of purposes. Energy demand is estimated to increase exponentially, implying alarming supply and demand gap. Despite prospects of huge renewable energy sources, presently, this country has only 0.3 percent of renewable energy share to the total energy supply. This paper reviews the renewable energy status and its prospective use in Bangladesh as well as renewable energy technologies obtainable in Bangladesh. It also attempts to provide future research directions and show ways to harness renewable energies to meet the future demand. [ABSTRACT FROM AUTHOR]