They started with the wrong idea: to provide *most* energy with renewable resources. The truth is that *some* renewable energy is fine and dandy, but only for *marginal* uses.
Most of the time, marginal uses are less valuable, because primary energy provision is more than adequate, and does a great job at low cost.
However, when there are *peaks* of energy consumption, renewable resources are quite handy. Oddly enough, mostly by making primary energy provision more efficient.
Renewable energy for anything but personal use is BS and a total waste of time.
If whatever you need power for can wait until the sun shines or the wind blows, go ahead and waste money on the equipment. You will still find it cheaper to use normal power sources.
On a commercial scale it is worthless because you still need conventional backup for all the energy that will be used, all that is created is extra wasted energy.
Handy? As in 'we already thrown tens of millions at the wall, let's see if we can use any of it so it's not a total waste', maybe.
Otherwise it's just wasting money.