Supercapacitors increasingly preferred for wind power

Can be supercapacitors useful tools to compensate irregularities of generation and more particularly reel-in phase?

Peter Harrop had previously predicted a 500 kW AWE system on the market by 2019. Seems to me his group mostly repeats whatever press-releases happen to be floating around. And if you read the comments on the hybrid capacitor story, we see a healthy amount of skepticism expressed, then the story seems to veer over to discussing hybrid cars vs all-electric.
Meanwhile, AWE is still wrestling with the same old “flygen? groundgen?” theme it started with in 2008.

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I considered supercapacitors for something but once you open the catalogs, the power to weight is a bit depressing. But I believe these may become relevant at some point in the future.