> "On average though, 114 MW is pulled out of the grid by the datacenter and 114 MW is put in by the renewable energy company."
That's simply not the case. Wind farms fluctuate greatly and produce on average no where near their max output.
> "they are only reliant on gas/coal/whatever when the wind is having a dip"
Which is all the time. I've worked on this problem, there isn't some constant output from wind farms.