The difficulty with wind energy is not whether it will be here in 500 years, it’s whether it will be here next Tuesday. Relying as a long term prospect on something so unreliable is simply building fallibility into the future.  A short term reliance on wind would be risky enough, building it in for the long term would be incredibly dangerous.  This is particularly true in countries where the weather is considerably less reliable that it is in Europe. Not only does wind face the risk of a shortfall but it also risks surges to the network at times of high wind. Denmark which pioneered wind energy in Europe, and remains the largest producer, is compelled to export much of that energy to Norway and Sweden because production frequently outstrips demand. That’s fine if one nation in the region is relying on the technology; if everyone is then the capacity simply isn’t there [i] .  [i] Mark Landler. “Sweden turns to a promising power source, with flaws.” New York Times. 23 November 2007.