>Because Germany is still producing 6× more energy with coal than Poland
Not 6x more. They're producing about 150 TWh from coal for 84 million people while Poland does about 120 TWh for just 37 million people.
Per capita, Germany uses far less coal and with current trends it'll use less actual coal for its 87 million people fairly soon.
>Because Germany deliberately shut down low-carbon footprint nuke powerplant to please their voters, then built coal-burning plants to compensate
That accounts for the slight blip on the graph I linked to above that lasted until 2014. This blip has received an overwhelming amount of attention given that it was relatively small, lasted a few years and coal usage started diving again in 2014.
It was symbolically important to the nuclear industry, but for all the wrong reasons.
>Because Germany is the first economy of Europe
This is the only reasonable answer.
>today is a good day (https://app.electricitymap.org/map), and her electricity is still 4× carbon heavier than France
Going back in time and building nuclear plants in the 1960-70s probably is the best way to have a relatively cheap, carbon free grid in 2020 but unfortunately it also means that there's an almighty gargantuan bill to pay when those same plants age out in 2030. France is sitting on either a financial ticking time bomb if they choose to rebuild or a potential nuclear disaster if they choose to extend their lifetimes well beyond viability.
https://www.carbonbrief.org/the-trouble-with-europes-ageing-...
https://futurism.com/the-byte/nuclear-plants-renewable-energ...