What is electrical energy storage (EES)?

Electrical Energy Storage, EES, is one of the key technologies in the areas covered by the IEC. EES techniques have shown unique capabilities in coping with some critical characteristics of electricity, for example hourly variations in demand and price.

What are energy storage technologies?

Energy storage technologies are a type of technology capable of storing electrical energy. They provide several services to the network, including bulk or distributed storage and ensuring power quality. These services concern both power supply and ancillary services.

Are electrical energy storage technologies a necessary element of the built environment?

Given the attempts currently being made towards the reduction of CO 2 emissions, electrical energy storage technologies, along with renewable energy technologies, are expected to be a necessary element of the built environment in the future , , , , , , .

What are the different types of energy storage technologies?

Major energy storage technologies today can be categorised as either mechanical storage, thermal storage, or chemical storage. For example, pumped storage hydropower (PSH), compressed air energy storage (CAES), and flywheel are mechanical storage technologies. Those technologies convert electricity to mechanical energy.

What is energy storage medium?

Batteries and the BMS are replaced by the “Energy Storage Medium”, to represent any storage technologies including the necessary energy conversion subsystem. The control hierarchy can be further generalized to include other storage systems or devices connected to the grid, illustrated in Figure 3-19.

Which energy storage technologies are suitable for large-scale energy storage?

Pumped-hydro (PHS), CAES systems and hydrogen are the only storage technologies available for high power and energy capacities and are suitable for large-scale energy storage, although energy density is rather low for PHS and CAES.