Inertia-Capable BESS
RWE has begun commercial operation of its first inertia-capable battery energy storage system in the Netherlands.
Image for illustrative purposes
Built as part of the OranjeWind offshore-wind project, the Moerdijk BESS uses lithium iron phosphate (LFP) batteries. It marks a step towards defining technical standards: over the next two years, RWE and Dutch TSO TenneT will collaborate to shape requirements and compliance procedures for future inertia-capable BESS systems (benelux.rwe.com).
This unit complements RWE’s 35 MW/41 MWh BESS already online in Eemshaven. Together, these systems are part of a broader push into grid-scale storage that includes wind, solar, EV charging and smart energy assets throughout Europe, the US, and Australia. Globally, RWE now operates some 1.2 GW of battery storage (energy-storage.news).
Why inertia‑capable matters
As more renewable sources like wind and solar connect to the grid, inertia traditionally supplied by heavy turbines disappears. Without inertia, frequency fluctuations can be more abrupt, threatening grid resilience. Inertia-capable BESS mimic the stabilising effect of rotating machinery, delivering rapid response to dips or surges in frequency.
Source: Energy Storage News
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