The IOM3 Energy Materials Group (EMG) is a cross-cutting group that provides a focus on the ever present materials issues in low carbon energy supply, whether it be materials supply or synthesis. This covers a wide range of topics including high temperature turbines for more efficient power generation, new generation of nuclear power stations, wind turbines, marine energy and solar photovoltaics. The EMG has an increasing and pivotal role with energy storage, including high efficiency batteries and the transition to electric vehicles that includes interest in magnetic materials and fuel cells. The UK low carbon energy agenda recognises the growing importance of hydrogen as an energy vector where the EMG has interest in electrolysers and hydrogen storage. The role of the EMG is to highlight the fundamental role of materials for low carbon energy.