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 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.

Why is electricity storage important?

In the electricity market, global and continuing goals are CO 2 reduction and more effi cient and reliable electricity supply and use. The IEC is convinced that electrical energy storage will be indispensable to reaching these public policy goals.

What is the purpose of this white paper?

The goal of this white paper is to inform industry executives, policymakers, and other industry stakeholders of the status of current and emerging trends in electric energy storage systems. This information focuses on energy storage markets, applications, value, and costs.

What are energy storage systems?

Energy storage systems offer electric utilities new options to improve the use and outlay of capital investments for new capacity, reliability, and grid support in rural and constrained urban areas.

How long does energy storage take?

Such energy storage systems would generally be in the size range of 50 to 400-plus MW with 6 to 10-plus hours for bulk storage, to 1 to 50 MW with 15 minutes to 1 hour of storage for smoothing intermittent renewable generation and balancing supply and demand.