The ENERGIESTRO flywheel stores energy like a stationary battery, but with the added benefit of unlimited life. In practice a flywheel will operate more than 30 years and one million cycles, whereas a battery lasts a few years and thousands of cycles. The bottom line is: the cost of energy storage with an ENERGIESTRO flywheel is much lower than with a battery.
As a standard, ENERGIESTRO offers a power rating enabling a charge or discharge in one hour (for instance the 10 kWh flywheel has a 10 kW power rating). For 24 hour storage, the optimal ratio between capacity (kWh) and power (kW) is 5 hours (for instance the 100 kWh flywheel has a 20 kW power rating).
ENERGIESTRO plans to produce a range of flywheels with storage capacity from 10 kWh to 1 MWh.
The table below gives the main features of the flywheels of the intended range:
Capacity | Diameter (m) |
Height (m) |
Mass (t) |
Power (kW) |
10 kWh | 1,0 | 1,5 | 3,0 | 10 |
20 kWh | 1,3 | 1,9 | 6,0 | 20 |
50 kWh | 1,7 | 2,6 | 15 | 50 |
100 kWh | 2,2 | 3,2 | 30 | 20 |
1 MWh | 4,6 | 7,0 | 300 | 200 |