In conclusion, in this perspective we have discussed the emerging field of supercapacitance in MOF electrodes. MOFs have shown promise as supercapacitor electrodes, both through EDLC and pseudocapacitive contributions to energy storage, and their capacitances can exceed those of traditional electrode materials. However, our comparison of the performance of a state-of-the-art MOF with a typical porous carbon electrode highlights several challenges. The MOF electrodes suffer from lower stable potential windows, shorter cycle lifetimes, and slower charging rates than porous carbons, raising questions about their practical applicability. Excitingly, the highly tuneable structures of MOFs offer several potential solutions to these issues, some of which have already been realised. For example, the charging rates of two-dimensional frameworks have been improved through morphology control, and optimisation of the framework dimensionality, surface chemistry, and pore size may lead to further improvements in the future. Optimisation of the stability of these materials poses a greater challenge, with the path forwards more unclear. The optimisation of MOF electrodes will ultimately be guided by a fundamental understanding of the charging and degradation processes. The electronic and ionic structure changes that occur during charging are only just beginning to be elucidated, while degradation mechanisms have barely been explored. The development of in situ experimental methods as well as molecular simulations is required to understand the fundamentals of energy storage in MOFs, so that improved materials may be designed and synthesised in the future. Ultimately, we also expect that some of the challenges and opportunities discussed in this perspective will also apply to other framework electrode materials, such as covalent-organic frameworks.