Strange, when I talk to project developers and look at cost assessments they indicate otherwise. I work in this field (wind energy), I see the growth figures, I see the profits these companies make, work with the millions they employ (figuratively speaking), and they do not need any feed in tariffs to be profitable. That was true maybe 5 or 10 years ago, but not any more. Sure, some technologies like off shore wind energy are not competitive as of today, but that is a matter of time considering current research efforts (which is not only done by governments).Actually, no alternative can do this right now. No green power source can compete without massive government assistance.
No large deployments of off shore wind energy? Do you have any idea how many projects are in the pipeline in Europe? I can tell you that it is a significant number!Solar is not even on the table, it's more than 3 times more expensive than coal in the best case. And it also can't be used for baseload capacity. The only thing that even comes close to being a real alternative is offshore wind power, but so far there were no large deployments to gauge its real-life efficiency.
Solar is on the table. Do you now there are competitive concentrated solar power plants for instance in California? http://www.sandia.gov/csp/cspoverview.html And they can provide base load to the grid when combined with some kind of heat storage.