Duration of energy storage battery

The energy storage duration of batteries varies based on the type of battery and its application:Lithium-ion Battery Energy Storage Systems (BESS) typically have a duration of 1–4 hours1.Short-Duration Energy Storage (SDES) systems can discharge energy for up to 10 hours, while Long-Duration Energy Storage (LDES) systems can discharge for 10 hours or longer2.For example, a battery with 1 MW of power capacity and 4 MWh of usable energy capacity will have a storage duration of 4 hours3.In recent years, more than 90% of new energy storage capacity has a duration of 4 hours or less4.These durations are influenced by the specific energy storage technology and the requirements of the application. When we talk about energy storage duration, we’re referring to the time it takes to charge or discharge a unit at maximum power. Let’s break it down: Battery Energy Storage Systems (BESS): Lithium-ion BESS typically have a duration of 1–4 hours. While short-duration energy storage (SDES) systems can discharge energy for up to 10 hours, long-duration energy storage (LDES) systems are capable of discharging energy for 10 hours or longer at their rated power output. Storage duration is the amount of time storage can discharge at its power capacity before depleting its energy capacity. For example, a battery with 1 MW of power capacity and 4 MWh of usable energy capacity will have a storage duration of four hours. By the end of 2022 about 9 GW of energy storage had been added to the U.S. grid since 2010, adding to the roughly 23 GW of pumped storage hydropower (PSH) installed before that. Of the new storage capacity, more than 90% has a duration of 4 hours or less, and in the last few years, Li-ion batteries.