That's a difficult choice. A choice between new dirty expensive coal power that works all the time, and new expensive renewable power that works some of the time.
There are lots of things lots of things that we need that don't work or produce all the time. Water is a good example. In Australia it doesn't rain every day or indeed every year in some places. So when it rains we store enough to see us through to when it next rains. Wheat and other foods are handled the same way.
Why is everyone getting their knickers in a knot about intermittent electricity? The technology is there to store enough electricity/energy to see us through the longest recorded no light no wind period for a particular area. What this discussion is about is finding the most effective , economical method known to date for storing power.
I happen to support ammonia for numerous reasons but would drop it in an instant if a superior system came to light.
One thing for sure is that it is a waste of time and intellectual resources to argue that we can keep pumping 50 gigatons of CO2 into the atmosphere every year without repercussions.
Clean energy however we choose to do it is our only choice.