Although people probably don't want to hear it, or don't want to believe it, nuclear is one of the cleanest sources of energy.
The old 1970's type plants need to go, replaced by newer, safer ones. We should be focusing more in that area. There are ways to make it safe, without the crusty old outdated technology.
Wind and solar are fine, but realistically they can only go so far. Although, every little bit helps - and the technology in those areas are getting better.
I've seen that huge solar complex near the CA/NV border -- and it's kind of crazy to witness for the first time. It's almost like an alien installation, with huge, blinding beams of light shooting upwards ... quite impressive, and a bit scary. It obviously does instantly incinerate anything that flies into its arena.
These photos were taken June 2014 by me, with the crappy cell phone camera I had at the time we were driving by (click for larger view):
You can't really judge the true scale of the entire thing from those photos, but it does give an idea of what it looks like.