VOSS flywheels in concrete reduces the cost of storage

[Olivier11]

VOSS Solar Storage Wheel
Flywheels in concrete divide the cost of storing electricity ... by 10 !!

The small Startup Energiestro, after launching a system of production and storage of electricity with flywheel for individuals, has taken a new industrial direction with a major innovation that brings down the cost of electricity storage dividing it by 10.

The innovation is to manufacture one-component prestressed concrete flywheels (kept secret for patent-pending reasons) instead of expensive steel or carbon. This project is carried out in collaboration with the CERIB (Concrete Research Center), the CETIM (Research Center of Mechanics) and several energy and concrete industries.
In the past, several companies (among the largest) have tried but never succeeded.
The innovation of the Energiestro Company is named VOSS; The Solar Storage Wheel.

Batteries from the latest technologies have a limited life. Depending on their use, the best can only support a few thousand recharge cycles at most. Not to mention that their recycling is problematic.

At the same time, thanks to manufacturing costs that have plummeted in the last few years, solar photovoltaic is becoming the cheapest of all renewable energies. The question of the storage of the energy produced is a very sensitive problem for certain types of production which are by definition, intermittent. Photovoltaics are not immune to changing weather conditions, to the day / night cycle, and for this energy source to not destabilize and be compatible with power grids, it must be consistently supplied.
VOSS, (Solar Storage Steering Wheel), responds to these vital issues. Voss was designed by the French company Energiestro, the initial project was planned for the isolated residences of the electricity network. It is in the industrial environment that Voss found all its meaning when André Gennesseaux found a way to literally drop the cost of kinetic storage wheels.

VOSS provides storage of solar energy in a flywheel capable of providing over a million cycles of charging for more than 20 years.

The flywheel technology is very old (late 19eme century) and has already been technologically proven. But the flywheels until now were expensive to manufacture because it requires a material that must withstand the great pressures of centrifugal force. So far, only technical steels or carbon-based composites; very expensive materials were used, so electrical storage in flywheels was much more expensive than the production of electricity stored.
By designing a new prestressed concrete material with exceptional properties, André Gennesseaux has divided the price of electrical storage by 10.

This innovation has prices well below the cheapest batteries. A real feat in the problem of energy storage.
With a storage period of about ten hours VOSS will allow to restore the night, the solar energy stored in the day. Unlike current batteries, VOSS is insensitive to extreme temperatures, and uses no toxic or strategic materials. Thus, VOSS can be deployed in any country and at any altitude.

Voss will quickly become a reliable and affordable photovoltaic storage solution for large solar power plants in desert areas. But also on sites of smaller importance not connected to an electric network.
After having recently received the price of innovation by the Ayrault government, the small Startup (3 employees) is in the final of the EDF PULSE prize against a German company (80 employees). (David against Goliath)
The site: http://www.energiestro.fr

You can help Energiestro to win this prize by voting before the end of April for her here:http://pulse.edf.com/fr/prix-edf-pulse/les-projets/etape-2?c=science There is a draw for the people who participated in the vote and there is an electric car to win.

Edit by Remundo
Thank you Olivier11, the subject devoted to inertial storage is here
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