I've done the math, on this very forum, multiple times. The result was always the same, if you were playing the equivalent of a full time job, 365 days a year, the difference in germany was $50-55.
This is concerning the use of a $600+ GPU to play bing bing wahoo. A purely wasteful purpose. If said GPU is for something that makes money then the $50 is utterly meaningless in the grand scheme of things.
The result is always the same. If $50 a YEAR in electricity is a major concern, you should not be buying $600 GPUs to play video games. Period. But, much like people going into $30k of debt in 2008 to buy a prius to save on $5 a gallon gas instead of keeping their truck or SUV, numbers are hard for the financially challenged and people will continue to vastly overpay to save peanuts.