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Contributor
Tan See Leng
Minister for Manpower and Minister-in-Charge of Energy, Science and Technology.
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Fuel report
May 2025
Outlook for Biogas and Biomethane Introduction to biogas and biomethane
Biogas is a mixture of methane, CO2 and small quantities of other gases produced by anaerobic digestion of organic matter in an oxygen-free environment. Its precise composition depends on the type of feedstock and the production pathway. The methane content of biogas typically ranges from 45% to 75% by volume. Biogas is usually produced using the following technologies: Biodigesters: These are airtight systems (e.g. containers or tanks) in which organic material is broken down by naturally occurring micro-organisms. Contaminants and moisture are usually removed before use of the biogas. Landfill gas recovery systems: The decomposition of municipal…
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Technology report
May 2025
Global Critical Minerals Outlook 2025 Broader view on energy-related strategic minerals: What risks to anticipate?
Many energy-related minerals are used across multiple sectors, including digital technologies, aerospace and high-performance materials While critical minerals are often associated with electrification, renewables and battery storage, their significance extends well beyond energy, underpinning a broad array of industrial and technological applications. From AI and robotics to high-performance materials and aerospace, these minerals’ contribution to industrial and technological development is increasing, with broad economic implications. The range of strategic materials with significant implications for the energy sector should not be underestimated. Superalloys – which require a diverse array of input metals – illustrate this: approximately two-thirds of global…
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