This open-source and plain-language knowledge library now includes six handbooks explaining a range of essential topics in power project contracts, financing, and procurement. . Energy management systems (EMSs) are required to utilize energy storage effectively and safely as a flexible grid asset that can provide multiple grid services. An EMS needs to be able to accommodate a variety of use cases and regulatory environments. In recent years, the Understanding series has expanded to focus on unique challenges in Africa's energy market, such as the. . Electrochemical: Storage of electricity in batteries or supercapacitors utilizing various materials for anode, cathode, electrode and electrolyte. Mechanical: Direct storage of potential or kinetic energy.