Commonly asked about kinetic energy storage devices


What is a kinetic battery (a flywheel, FES or KES)?
A kinetic battery is a device that stores electricity in the inertia of moving mass instead of using electrochemistry.  In the case of our flywheel, the mass is spinning about its natural inertial axis.


Is flywheel energy storage a new technology?
No, actually it has been around for quite a while.  However, due to the complex design and construction of these systems they have not been able to compete competitively in price with electrochemical storage.


Do flywheels wear out quickly because of their many high-speed moving parts?
Many flywheels use mechanical bearings for radial support or shafts for axial support, however  Spinlectrix uses a unique design with no points of contact to the rotor, thus having no wearing parts.  While other flywheel system designs using full magnetic magnetic suspension have also been attempted, they have all been too costly to this point.


Will lithium be able to rule the energy storage market?
Lithium batteries will play a big part in energy storage in the coming years especially in mobile applications, but limited supplies of lithium, the variable nature of renewable energy storage and other economies of scale open the door to larger scale energy storage units like Spinlectrix'.


Why not use lithium batteries to balance the grid-scale peaks and troughs?
Chemical storage like lithium ion lose capacity with every charge/discharge cycle.  Spinlectrix’ kinetic battery is not directly affected by any number of charge/discharge cycles.


Are power companies be interested in this technology?
Simply, yes.  The ability for power companies to store energy throughout the day allows for fewer peak power plants, and for fewer transmission-lines.  Power can be delivered with these energy storage installations at grid-level instead of matching the demand at any given time.


Is this all about storing renewable energy sources?
While the advantages of using batteries to store electricity are obvious for renewables like solar and wind power (allowing renewable power to be used on demand), batteries can also be useful in combination with fossil fuel systems.  Batteries are capable of responding to instantaneous grid fluctuations, dropouts and phase-mismatches, and are especially important for micro-grid stabilization.


What is the main advantage of kinetic over chemical batteries?
The main advantage is the life of our kinetic battery, or how many cycles it can go through without degradation how much energy it can store.  Other benefits come included isolation from temperature fluctuation and the AC signals inherent in our design.


Are lithium batteries more cost effective?
Even as lithium battery prices continue to drop, the current life of lithium electrochemical cells put them at a cost disadvantage over the lifetime of the products. The SPIN Revolution pushes the cost to store energy below the cost of energy generation from natural gas.


Does SPIN’s kinetic battery react to temperature cycling like lithium ion batteries?
No, SPIN’s flywheels are essentially impervious to temperature change.  While chemical storage reactivity is cut in half for every 10°C drop in temperature, SPIN’s kinetic storage delivers the full capacity at any temperature.