When wind and solar actually become cheaper than coal, the problem will take care of itself. When will this happen? People seem to think we're close, but it's

When wind and solar actually become cheaper than coal, the problem will take care of itself. When will this happen? People seem to think we're close, but it's still at least a decade? Population of Wyoming: 500,000 Their decision to use coal is irrelevant. I can't believe this is a top 10 story.