The great exhaustion of fossil fuels, a source of greenhouse gases especially CO 2 , inspired the researchers to cultivate a proficient source of renewable and clean energy. The metal–organic frameworks (MOFs) are getting potential attention due to their ordered porous structure and flexibility. In this chapter, we have discussed MOF-based nanomaterial for energy applications and special emphasis is on the structure–property relationship. First of all, the advantages of MOFs-based materials for energy applications over other types of nanomaterials are described. Further, recent developments of MOF-based electrocatalysts for energy applications like water splitting and Zn–air batteries will be summarized. Further, the recent strategy by 96 modifying their surface area, porosity, electrochemical active area, and current density by tailoring the metal centers and/or organic ligands will be directly translated into an enhancement of the catalytic performance and future perspectives will also be discussed.