Keep in mind they use coal, oil and natural gas to make electric, so they're going to have to go to nuclear because wind and solar won't cut it. So if they want to phase out coal, oil, and natural gas they better come up with a viable plan. At the moment the grid sucks, so they better sort that out too.
Natural gas isn't in any danger of being phased out. An important reason for coal being phased out is that natural gas has been cheaper for a long time and burns relatively clean. And strangely enough, the reason why natural gas prices went down was fracking. Oil makes for very little electricity output.