The state has on the books a law requiring that a fifth of all electricity come from renewable sources by 2010. (getsolar.com)
The CES requires that half the state's electricity come from renewable sources by 2030. (powermag.com)
The second step I'll take is to require that 10 percent of our energy comes from renewable sources by the end of my first term — more than double what we have now. (dotearth.blogs.nytimes.com)