Could we store kinetic energy in the shaft or around a windturbine

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wind turbines are usualy pretty high, could we lift a heavy weight or pump fluids up with excess power of wind turbines, like when you use the height diffrence of 2 lakes but then inside the shaft of a wind turbine.

In: Engineering

Yes, there are real proposals (and working prototypes) to build turbines that either lift heavy weight blocks, or pump water up to an elevated reservoir.

https://www.energy-storage.news/news/worlds-tallest-wind-turbine-gets-70mwh-of-pumped-storage-near-stuttgart