I think those are intentionally misleading numbers. The UK is a finance power house, not a manufacturing one, so of course it derives a larger share of GDP from less energy.
Italy has a higher % of GDP from manufacturing but way more expensive energy.
Germany and the Netherlands bled off more than half of London's finance industry since Brexit if you look at recent numbers. They still have a finance industry but powerhouse might be a stretch these days.
Hmm, I could see the case for energy use per unit of GDP being misleading in some ways. But per capita electricity generation? That’s not related at all.
Italy has a higher % of GDP from manufacturing but way more expensive energy.