Sähkövarasto

Sähkövarasto, translating to "electricity storage" in English, refers to systems designed to capture and hold electrical energy for later use. These systems are crucial for stabilizing power grids, integrating renewable energy sources, and providing backup power. Various technologies exist for electricity storage, each with its own advantages and disadvantages.

The most common form of electricity storage is batteries, particularly lithium-ion batteries, which are widely used in electric vehicles and for grid-scale applications. Pumped-storage hydropower is another significant technology, where water is pumped uphill to a reservoir during times of excess electricity generation and released through turbines to produce power when needed. Compressed air energy storage (CAES) involves compressing air into underground caverns or tanks and releasing it to drive turbines.

Other emerging technologies include flywheels, which store kinetic energy in a rotating mass, and supercapacitors, which can charge and discharge very rapidly. Thermal energy storage, while not directly storing electricity, can store heat or cold generated from electricity, which can then be used for heating or cooling purposes. The development and deployment of Sähkövarasto solutions are vital for modernizing energy infrastructure and achieving decarbonization goals by enabling a more flexible and resilient electricity system.