Denmark Flywheel Energy Storage Market: Strategic Insights on
With its strong wind energy sector, Denmark is exploring flywheel storage to balance energy supply and demand efficiently.
With construction works scheduled to begin late this year, the facilities are expected to be commissioned in the first half of 2026. Copenhagen Energy has been developing the projects since the start of 2024.
Commenting on the Danish energy storage market, Copenhagen Energy said that it offers a solid mix of revenue opportunities through both ancillary services and energy arbitrage.
A flywheel-storage power system uses a flywheel for grid energy storage, (see Flywheel energy storage) and can be a comparatively small storage facility with a peak power of up to 20 MW. It typically is used to stabilize to some degree power grids, to help them stay on the grid frequency, and to serve as a short-term compensation storage.
These storage facilities consist of individual flywheels in a modular design. Energy up to 150 kWh can be absorbed or released per flywheel. Through combinations of several such flywheel accumulators, which are individually housed in buried underground vacuum tanks, a total power of up to several tens of MWh can be achieved.
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