> I think the main point was that it is bad that Germany produces less energy over the decades

And I think the counterpoint is that all sorts of processes are vastly more efficient nowadays, so less energy isn't necessarily indicative of bad things. If a factory switches to LED lights, more efficient machines, installs a few solar panels on the roof, starts using electric golf carts for people to move around the factory grounds, upgrades their computers to modern ones, implements smart switches so that everything is really cut off at night, etc. their electricity consumption will be drastically down... and that doesn't mean there will be less output.