Here is a good explanation of the system costs of intermittent wind and solar, starting at about the 6:00 point on the video. I have posted this before but maybe you will finally get it this time.
I have also pointed out the clear result of going hog wild on wind and solar and what it does to power prices. I have challenged you to present ANY country where building lots of wind and solar has reduced power prices, and you have failed to produce any. In the real world, countries that do that see their power prices skyrocket like Germany and the UK. Consumers, residential and business, pay a whole lot less for power in nuclear powered France and coal powered Poland than they do in wind and solar obsessed Germany and the UK. I posted an article from the Wall Street Journal on how wind and solar were sold to Europeans as reducing power costs but had actually raised them substantially to consumers, generating a backlash.