Deep tech dive
Flywheel, Sodium-Ion, Hybrid deep tech dive. To boldly go where no Energy Storage has gone before...
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How does the flywheel work
A flywheel is a kinetic battery that uses a spinning rotor to store and deliver energy, perfect for applications where instant power must be delivered from milliseconds up to minutes.
Charge
As the flywheel absorbs electrical energy, it transitions it into kinetic energy. The more energy input into the system, the faster the flywheel spins and thus the system charges.
Store
When electrical energy has been transferred to kinetic energy, a flywheel needs to 'hold on' to this energy and not lose it due to friction or heat. Specialized bearings an a rotor that spins in a vacuum all help with making sure that the rotational energy does not get dissipated.
Release Power
When power is needed, the flywheel will decelerate the rotor to turn its stored kinetic energy back into electric energy, providing you with high power in a matter of milliseconds.
Heavy or fast?
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The energy stored in a flywheel can be calculated by Ek = ½ I * ω2 . Here Ek is the energy stored as kinetic energy. ω is the angular velocity (rad/s).
The energy stored in a flywheel can be calculated by Ek = ½ I * ω2 . Here Ek is the energy stored as kinetic energy. ω is the angular velocity (rad/s). The I can be described as I = k * m * r2. I is the result of k, the inertia constant of the flywheel, m the mass (kg) and r the radius (m).
This implies that a fast spinning flywheel can be more efficient, since the energy that can be stored in a flywheel is linearly related with the mass of the flywheel and quadratically depended on rim speed. This is why we go fast, not heavy. A small, high speed flywheel with mininal friction is the most advantageous design, since more energy can be stored in a small volume with less energy losses and more cycles.
What is Peak Shaving
Peak shaving refers to reducing high power spikes during periods of high demand by storing energy and releasing it when needed.
It works over very short time periods, from seconds to minutes,  providing immediate reductions in power demand through high-power bursts.

Flywheels are ideal for peak shaving because they can absorb or deliver high power peaks quickly and repeatedly. Their inherent speed and robustness make them perfect for smoothing out frequent spikes.  — like when cranes at a terminal start operating.
Built Differently
Flywheels excel in delivering or storing frequent, high power peaks and can do this with an extremely long lifetime.
Flywheels are a mechanical energy storage solution, meaning they pose no fire risk, are (in our case) fully recyclable, are insensitive to volatile power demands and require little maintenance. Our systems have a 100% European supply chain and with our fast response time, our flywheels are the ideal power-oriented storage solution.
How Sodium-ion batteries work
Sodium-ion batteries are well-suited for longer duration energy storage, making them ideal for managing fluctuations in energy supply over extended periods.
The Stable and Safe Alternative to Lithium-ion batteries.
A sodium-ion battery stores energy through electrochemical reactions, where sodium ions move between the anode and the cathode. This process works in a similar way to that of lithium-ion batteries. However, sodium-ion batteries operate at a lower voltage, which allows them to remain stable even at 0V — enhancing overall battery safety. 

QuinteQ System Design
The sodium-ion battery subsystem consists of modules that can be easily assembled and disassembled. Each battery module is placed in a container with minimal interfaces. The slide-and-lock system enables automated placement, and each module is maintenance-friendly—free of glue or welds—making recycling easier.
Built Differently
Sodium-ion batteries are a next-generation solution for long-duration energy storage. They use widely available, low-cost materials and eliminate reliance on lithium or other critical raw elements.
This makes them more sustainable, geopolitically secure, and easier to scale. Unlike lithium-ion, a sodium-ion technology offers enhanced safety by operating stably at 0V with no risk of thermal runaway.
QuinteQ has further elevated these benefits through proprietary cell assembly and atomic unit positioning. This enables minimal performance degradation over time, increased thermal resilience, and cost-efficient production—resulting in a safer, more affordable and more sustainable energy storage system.
Hybrid Energy Storage Tech dive
The best of both worlds. Our hybrid system combines flywheel technology with sodium-ion batteries, an innovative solution that supports complex energy demands.
What’s inside?
A sodium-ion battery stores energy through electrochemical reactions, where sodium ions move between the anode and the cathode. This process works in a similar way to that of lithium-ion batteries. However, sodium-ion batteries operate at a lower voltage, which allows them to remain stable even at 0V — enhancing overall battery safety. 

QuinteQ System Design
The sodium-ion battery subsystem consists of modules that can be easily assembled and disassembled. Each battery module is placed in a container with minimal interfaces. The slide-and-lock system enables automated placement, and each module is maintenance-friendly—free of glue or welds—making recycling easier.
Built Differently
By merging the instant responsiveness of flywheel technology with the endurance of sodium-ion batteries, the hybrid system balances short-cycle performance and long-duration storage in a single solution.
Flywheels are a mechanical energy storage solution, meaning they pose no fire risk, are (in our case) fully recyclable, are insensitive to volatile power demands and require little maintenance. Our systems have a 100% European supply chain and with our fast response time, our flywheels are the ideal power-oriented storage solution.
