There's a lot mixed facts, non-truths, and general inaccuracy in a lot of the replies/responses here.
There's a lot of things that make a "renewable" facility desirable from a market perspective - of course the obvious subsidies, a large initial fee for generation cost (instead of a volatile cost extracted input like nat gas/coal/nuclear), low labor cost (way less $ per mwh), maintenance/repairs can easily be done in stages without a multi-week/month "overhaul" extended duration outage.
The primary advantage not being understood/stated - the power generated from a renewable facility is primarily sold on the market "first" because of a major market advantage. Power is sold on 24 and 48 hour cylces, with generators bidding at intervals. If your input cost is essentially 0, your bid on the power can be "0" as the low bid matches the second lowest bid in terms of the power price. I.e. Market demand is 100 watts, renewable facilities bid 0 $ per watt for 35 watts (plus they get a CREDIT- called the production tax credit - for producing), so actual nominal "daily" production cost is negative, natural gas bids 6$ per watt for 35 watts, nuclear bids 8$ per watt for 35 watts, and coal bids 10$ per watt for 35 watts (140 watts total) then the coal generator gets entirely left out from selling power and nuclear sells only 30 of 35 watts they have available. It becomes really tough to compete when the renewable output might be 0 or as much as 100% of the grid in places like Texas on ideal wind days with low demand - so the traditional generators get on/off market days because of market conditions. There are no contracts with mines, pipelines, gas fields, railroads. or major labor unions. Essentially, renewable facilities don't really pay a penalty for variable generation output - there competitors do because of how the rules of the market game.
It's hard to really say/argue what the true long term best overall cost of a lot of things are over the life of the project, especially considering upgrading the system down the road. One thing is certain, we will never be "free" of fossil fuels or traditional mined product generation.