Current Wind Turbines, with their massive blades, are a noisy and inefficient way to produce electricity. However, there are several prototypes of wind turbines currently in test that resolve most of the current problems, and increase the output of these turbines. Within the next few years, new designs will be available that increase the output of wind generated electricity, AND eliminate the problems.
Solar is also on the brink of becoming the major producer of electricity. Solar prices are coming down substantially, and if battery technology can be improved...hopefully by research such as that being done by Tesla...it may not be many more years before solar power becomes economically feasible for individual homeowners.
Presently, the biggest hurdle that has to be overcome is the powerful influence the fossil fuel industry has on our government. These corporations can see the beginning of their demise, and they will fight Clean Energy projects at every opportunity. If they were smart, they would be taking some of their massive profits and begin investing in clean energy, themselves. It will take some time to transition away from fossil fuels for transportation purposes, but for electrical generation purposes, wind and solar could very easily supply the vast majority of the nations needs within another decade, or two.