Carnot battery

This type of battery is suitable for short-term storage but may not be economical for longer durations due to its high energy capacity costs.

[8] The German Aerospace Center (DLR) and University of Stuttgart have been working on the concept of Carnot batteries that store electricity in high-temperature heat storage since 2014.

[8] In 2018, the name "Carnot battery" was used at the Hannover Messe,[9] one of the world's largest trade fairs, by DLR.

The main advantages of the Carnot battery are:[16] The major drawback of this technology is:[17] Carnot batteries can be used as grid energy storage to store excess power from variable renewable energy sources and to produce electricity when needed.

Carnot batteries have been proposed as a solution to convert existing coal-fired power plants into a fossil fuel-free generation system by replacing the coal fueled boiler.