Illustration of classification of household energy storage systems

What are the different types of mechanical energy storage systems?

Mechanical energies are divided into four types: Pumped hydroelectric energy storage, flywheel energy storage, compressed air energy storage, and gravity energy storage. These are prominent examples of widely employed mechanical energy storage systems in energy storage technology (3). Figure 3. Pumped Hydroelectric energy storage.

How are energy storage systems categorized?

These systems are categorized by their physical attributes. Energy storage systems are essential for reliable and green energy in the future. They help balance the ups and downs of renewable energy sources, like when the sun isn’t shining or the wind isn’t blowing.

What are the different types of energy storage?

These classifications lead to the division of energy storage into five main types: i) mechanical energy storage, ii) chemical energy storage, iii) electrochemical energy storage, iv) electrostatic and electromagnetic energy storage, and v) thermal energy storage, as illustrated in (Figure 2).

How many types of thermal energy storage systems are there?

It was classified into three types, such as sensible heat, latent heat and thermochemical heat storage system (absorption and adsorption system) (65). (Figure 14) shows the schematic representation of each thermal energy storage systems (66). Figure 14. Schematic representation of types of thermal energy storage system. Adapted from reference (66).

What is electrochemical energy storage system?

Electrochemical energy storage system undergoes chemical process to store and produce electricity. Batteries are the most widely used electrochemical energy storage systems in industrial and household applications (28). They are classified into two types namely primary and secondary batteries.

What are the different types of chemical energy storage systems?

The most common chemical energy storage systems include hydrogen, synthetic natural gas, and solar fuel storage. Hydrogen fuel energy is a clean and abundant renewable fuel that is safe to use. The hydrogen energy can be produced from electrolysis or sunlight through photocatalytic water splitting (16,17).