With absolutely world-class solar installation, rapidly growing in-state demand, and prime location next to one of the largest renewable energy markets in the world (that would be California), building a solar industry in Arizona would seem like a no-brainer. I certainly think so. But, more importantly, 87 percent of Arizonans do, too.

The remaining 13 percent appears to include Sen. McCain, who has failed to show up for any of the votes to extend the critical 30 percent investment tax credit -- an issue that's literally make-or-break for large-scale solar in Arizona and elsewhere. Abengoa has signed a deal for a 280 MW concentrated solar power plant with Arizona Public Service, a deal that would bring about $1 billion of investment and 1,500 jobs to Arizona -- and parties on both sides have made it clear that the project's consummation is critically dependent on a long-term extension of the investment tax credit.

This Earth Day, The Arizona Republic published an excellent editorial calling the good senator out.