Off the grid... no electricity... a Blessing or a lack?
If you ask me, I would definitively say a Blessing.
What do you mean, go back to the dark ages ? No. It is just time to have Light without the need for electricity and monthly bills.
By far I would say solar and wind are nowhere close to the answer. Why? They cost money... lots of money. Also, they are based on the same false principle of generating electricity.
Go figure. Literally. The answer is really available, for Father would have elegant simplicity upon the Earth without enslavement and destruction of the Earth and the People.