Which type of electricity is produced directly from heat?

Thermoelectricity is the type of electricity generated directly from heat. It arises from the thermoelectric effect, which occurs when a temperature difference across a material leads to a voltage being produced. This can be utilized in various applications, such as thermoelectric generators that convert waste heat into electrical energy, or in cooling systems where electrical energy is used to create a temperature differential.

The process relies on the Seebeck effect, where certain materials create a voltage when there is a temperature gradient. This makes thermoelectric generators particularly valuable in situations where heat energy is abundant but not easily harnessed for other forms of power generation.

Understanding thermoelectricity is essential when considering sustainable energy solutions, as it provides a means to utilize otherwise wasted heat energy, indicating a growing area of interest in energy efficiency and innovative technologies in design and technology.