Engineers know that you solve problems as you need to and as you can and as you want to.
Oil is the first to go. We have many solutions to that. I live in one place where there is lots of wind, and another where there is lots of sun. There is no oil in either place.
Why wouldn't I have a solar powered car in the sunny place and a wind powered car in the other? And I can use the same car!
All you keep doing is repeating
what you want us to do !
..and that "We have many solutions to that"...
well what are they ?
So far all you said is:"I live in one place where there is lots of wind, and another where there is lots of sun."
What makes you think that it`s different in Germany?
You still need to adjust for sudden load demand even if you have "lots of wind"....it`s not constant unless you are inside a wind tunnel.
All the while you`ve got to maintain constant rpm to stay at 60 hertz and at grid voltage, which calls for more torque wanting to drop your rpm and get it out of phase, lagging with the grid...how many times do I have to tell you
what the problem is ?
Solar? aren`t there any clouds passing overhead where you live?
Engineers know that you solve problems as you need to
They all know that at Siemens, GE, Mitsubishi etc, the question you keep avoiding is
how; if you don`t want to "spin up" another power plant that picks up the slack for wind and solar.
Our integrated power grids have been doing that all the time even long before wind turbines went on-line.
In any power plant 1 or 2 turbines carry the current (base) load and when there is a sudden demand surge that they can`t handle the rest of the other turbines which are on stand-by were spinning in phase share the load by having their exciter voltage increased and their wicket gates opened just a little more& just enough to keep spinning in phase and at constant rpm to accept that load.
No problem, that does not drop the pen stock pressure you get from the reservoir.
So
what do you suggest we should do when your "reservoir" the wind speed drops for the whole wind mill park.. while the load demand spikes up?
Now it`s a gamble. If you are lucky you are still able to compensate with the blade pitch to adjust for the lower wind speed as long as that wind speed is
still high enough to give you the torque to keep up the rpm.
I guess it never occurred to you that a shallow pitch to stay at nominal rpm delivers less torque and you would be out of phase in 1/120 th of a second, smoking your wind mill unless the disconnect breakers tripped in time...
and then you are screwed !
You would brown out an entire region exactly the same way Texas did with their wind mills.