Do you have any data on this?
Another manufacturer of food-related products closed, too: https://www.europe1.fr/economie/le-groupe-cofigeo-william-sa...
A quick search brings up others, but in French.
Fair point about moving to the US, though.
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Edit regarding the US specifically (unfortunately, French only):
Here's Safran suspending a factory project near Lyon and increasing production in the US and Malaysia: https://www.lesechos.fr/industrie-services/air-defense/safra...
Also, BASF announcing a "cost-cutting" plan in Europe and increasing production in the US: https://www.europe1.fr/economie/prix-de-lenergie-delocalisat...
I think the reason is twofold:
1. Industries can probably not afford to cut production immediately
2. At least in France, there were worries about gas availability for the winter. The government tried to have industries lower their consumption to not run out of the reserves during the winter.
https://www.grtgaz.com/en/en/our-actions/continuity-of-gas-t...
I haven't found a similar source for electricity, though articles I've seen talk of reductions, too.
The part of the claim you have taken upon yourself to substantiate is that the reduction is mainly (or even mostly) due to industry getting closed down completely or relocated specifically to the US.