I'm not so sure about renewables not competing without subsidies. Solar is about $3/watt installed now (quite a bit cheaper if you DIY some of it), so $10k for a 3.5kW system that would power a small house/condo in the western US with decent sun. 10.5 cents a kWh is average, so that system is going to produce something like $500/year of electricity.
You end up around 10 cents/kWh, pre-subsidy, with the solar setup over the system lifetime.
That's cheaper than natural gas fired electricity most places, and certainly cheaper than most coal fired. There are obviously load leveling issues for the larger system and if you live somewhere without much sun it won't pencil out, but still... that's freaking cheap power for a lot of folks. With no subsidies at all. And PV panel prices just keep dropping (and installers keep getting faster/better/cheaper as competition from the big folks like Solarcity drives the crappy ones out of business).
Wind is competitive too in many places, again without subsidies.
Coal's only future is for load leveling plants, but given it's other problems, it's hard to see that happening either.
-W