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Energy & Renewables vocabulary · Energy Storage

Battery storage

Meaning in energy & renewables, with examples

nounCore term

In energy & renewables, battery storage means: Storing electricity in large rechargeable batteries so it can be released later, for example during the evening peak or when the grid needs fast support.

In Turkish: batarya depolama, batarya enerji depolama sistemi, BESS

How it is used

In projects the system is called a battery energy storage system (BESS), usually built in containers. A battery is charged and discharged, sized in MW and MWh, and earns money from price arbitrage, frequency services or capacity payments. It can stand alone or sit next to a solar or wind plant.

Example sentences

  1. The battery storage charges at midday, when solar power is cheap, and discharges in the evening.

  2. We are adding 40 MWh of battery storage to the existing wind farm.

Common collocations

  • battery energy storage system
  • co-located battery storage
  • standalone battery
  • charge and discharge
  • energy storageTechnologies that capture energy when it is available and release it later when it is needed, such as batteries, pumped hydro and thermal storage.
  • lithium-ion batteryA rechargeable battery in which lithium ions move between the electrodes. It is used in phones, electric vehicles and most new grid-scale storage projects.
  • state of chargeHow full a battery is at a given moment, shown as a percentage of its usable capacity, from 0 percent (empty) to 100 percent (full).
  • round-trip efficiencyThe share of the energy put into a storage system that can be taken out again after losses in charging, storing and discharging, shown as a percentage.
  • peak demandThe highest level of electricity demand in a given period, such as a day or a year, which the power system must be able to supply.

More terms: Energy Storage

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