It might be energy/electricity hungry but the linear motors also act as generators, hence when one side of the suspension is moved that linear motor generates the electricity which is then stored in a battery/capacitor and used later. Pretty ingenious setup, would love to see it in production cars.

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2008 E70 X5 3.0si
Sport | Prem | Adaptive Drive | Tech. | Cold Wthr | Rear Climate | 3rd Row | Running Boards | iPod/USB

2019 G30 530e
Sport | Adaptive | Drv. Assist+ | HK | HOV Access

2018 F83 M4
Comp. | Exec | DCT | First M Car

2009 E93 335i (Sold)
Sport | Prem | 19" 230 | Logic 7 | iPod/USB | Sat | HD Radio | Comfort Access | Heated Seats | Pure Joy

E36 328is GoKart (Sold)
Manual | HK | Trip Comp. | 17" Rims