Bangladesh is facing two serious problems that are usually discussed separately: a shortage of natural gas and a growing municipal waste-management crisis. Yet these challenges may have an important connection. Bangladesh's gas demand is around 3.8 billion cubic feet per day (Bcf/d), while the grid typically receives approximately 2.7 Bcf/d, creating a substantial structural shortfall. Declining domestic production and increasing reliance on imported LNG have increased exposure to international supply disruptions and price volatility. At the same time, Bangladesh's cities generate enormous quantities of municipal waste, much of which is organic and capable of producing biogas.
What RNG is. RNG, or biomethane, is produced from organic materials such as food and vegetable waste, livestock manure, agricultural residues and wastewater sludge. Through anaerobic digestion, microorganisms break down organic material without oxygen and produce biogas. After removing carbon dioxide, moisture and other impurities, the methane can be upgraded into RNG. Depending on infrastructure and applicable standards, RNG can be compressed for vehicle fuel, supplied to industrial consumers or, where feasible, injected into the natural-gas network. The process can also produce digestate for compost or organic fertilizer.
Bangladesh's overlooked energy resource. Bangladesh generates an estimated 38,000 tons of municipal solid waste every day, with roughly 70 percent, about 26,600 tons, estimated to be organic and potentially digestible. Using an indicative biogas yield of 80 cubic metres per ton of organic feedstock, this represents a theoretical raw-biogas potential of approximately 2.13 million cubic metres per day. Assuming 60 percent methane and upgrading to an RNG stream with 95 percent methane, the theoretical potential is approximately 47.5 MMscfd. This is not an immediately achievable production level. Actual output would depend on waste collection, source segregation, contamination, feedstock quality, digestion efficiency, methane recovery, plant availability and technology performance.
Why RNG matters for energy security. RNG will not replace LNG. Its strategic value is as a domestically sourced and decentralised supplementary gas resource. Unlike imported LNG, RNG produced from domestic waste is not directly exposed to international shipping disruptions or global spot-market volatility. It can also reduce foreign-exchange pressure by substituting, at least in part, for imported gas. RNG facilities could be developed at city or regional scale, close to waste sources and local energy consumers.
The economic opportunity. Bangladesh's LNG import bill is projected at approximately USD 8.0 billion, while spot cargoes are currently trading around USD 28/MMBtu, compared with approximately USD 12/MMBtu in 2025. At USD 28/MMBtu, the theoretical national RNG potential of around 47.5 MMscfd represents an indicative gross gas value, or potential import-substitution value, of approximately USD 485 million per year, nearly 6 percent of the projected LNG import bill.
Lessons from international experience. India has developed large-scale municipal Bio-CNG facilities that convert segregated organic waste into renewable gas and organic compost. The key lesson is that technology alone is not enough. Successful projects depend on reliable collection, effective source segregation and consistent feedstock quality. For Bangladesh, waste-to-RNG should therefore be part of a broader transformation of municipal waste management.
What Bangladesh needs to do. Bangladesh should begin with carefully designed city-scale demonstration projects and use their results to develop a national model. This requires better waste collection and source segregation, a clear regulatory framework, private-sector participation, and appropriate standards and offtake arrangements for compressed RNG, industrial use and, where feasible, gas-grid injection. RNG will not replace LNG or solve Bangladesh's energy crisis by itself, but it can provide a domestically produced, decentralised and renewable source of gas while addressing a persistent urban environmental problem.
