I live in Arizona. Most of the state, especially the southwestern portion between Phoenix and California, is essentially barren, uninhabited, undeveloped desert that gets about 300 or more days a year of constant sunshine. I really don't understand why at least a portion of this incredibly vast area is not filled with solar farms. A good portion of the electricity needs of the southwest US could probably be met using current technology if only a couple of hundred square miles of this state (out of approximately 113,000 square miles) was devoted to harvesting solar energy.

I guess it all comes down to economics. The ability to efficiently store the electricity produced during the day has always been the main obstacle in the past.

I hope this article turns out to be true.