As a sustainable, non-polluting alternative to fossil fuels, hydrogen has many benefits: it is abundant, and can be generated using a variety of renewable sources such as wind and solar power and when used as a transportation fuel, the only by-product is the regeneration of water. The critical barrier to the widespread use of hydrogen as a fuel is that it is difficult to store and transport. Adsorption of hydrogen into nanoporous materials is a widely-researched method for the safe and convenient storage of hydrogen. Tthe nanoscale dimensions of the pores results in departures from the classical behaviour of hydrogen as a bulk gas, with recent experiments showing remarkably high densities of hydrogen gas within optimized nanoporous materials. This has led to new approaches to modeling and evaluation of nanoporous materials, for design of improved hydrogen storage systems for sustainable energy applications. This presentation will provide an introduction into the active research area of nanoporous hydrogen storage, and then will take a closer look at what is really happening inside the pores….