Storage requirements for reliable electricity in Australia

摘要: The study identifies the energy storage requirement for power system reliability, or “keeping the lights on”. This requirement has two components that in engineering terminology are called adequacy and security. System adequacy is the ability to supply enough energy at the right times to meet customer demand. System security is the ability of the system to withstand sudden changes or contingency events, such as the failure of a large generator, load or transmission line. Providing both adequacy and security is a core function of the Australian Energy Market Operator (AEMO).Different approaches were used for assessing power system adequacy and security. Understanding adequacy, and the impacts of daily and seasonal variability of demand and variable renewable energy sources, required an hourly model of potential generation and energy demand. This was performed for each state in the National Electricity Market, including the southwest of Western Australia, for an entire year.