TESS: economic device that stores 36 times more energy than lithium-ion batteries


The facilities of 1414 Degrees in Australia.

An australian company, 1414 Degrees, has announced the creation of a new energy storage device capable of storing up to 36 times more energy than lithium-ion batteries more advanced, but with a manufacturing cost is immensely lower, only about one-tenth of what it cost to manufacture the current.

This technology is the result of nearly a decade of effort of the company, which only recently has acquired the name 1414 Degrees – has until now been called Latent Heat Storage – and that has invested more than 3 million australian dollars (2.18 billion euros) with the help of a program under the Ministry of Industry of australia, the faculty of engineering of the University of Adelaide and a number of private companies with small contributions to the project, such as Schneider Electric.

Currently, these performance figures correspond to those of a prototype, which has not been published no image at the moment, but it promises to store up to 500 kWh in a cube of about 70 cm of side. The new Powerwall 2 Tesla is able to store only 14 kWh, or about 36 times less.

The device is named TESS, which stands for Thermal Energy Storage system thermal energy storage, and it works by the heating and melting of a block of pure silicon to an extremely high temperature, 1414 degrees Celsius (hence the name of the company).


Dr Kevin Moriarty (CEO) and Matthew Johnson (Director ejecutivoy chief technical officer) of 1414 Degrees.

The fused silica and isolated is able to retain the heat over a large period of time and is used by turbines to convert the thermal energy back to electrical energy. The residual heat is reused to heat the block.

The company has not detailed the process and its possible implementation in electric vehicles, but several specialized media australians point out that after its development, it would be a considerable step with respect to the lithium-ion batteries that employ the vehicles now. A heat storage device of this type could be implemented in a vehicle with a relatively low cost, but would need some other element that converts the heat into electricity, for example, a turbine.

The australian company is now to attract funds for the construction of a prototype more, which will have 20 tons of silicon, whose cost has already been funded in part by australian institutions.