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Thanks for that. I'm sure there are numerous examples of occasions with high wind output on the grid and that the grid can manage just fine, despite all kind of tales of woe and doom. I haven't seen any updates of last year's record on December 12, where wind contributed 37% of that day's electricity, has since been improved, so I consider that Germany's latest feat. Correct me when wrong.

The article's main hypothesis is this, though:

it is increasingly difficult for the market share of variable renewable energy sources at the system-wide level to exceed the capacity factor of the energy source.

If we take Germany as example, onshore wind has a capacity factor varying between 10 and 20 percent while the onshore market share in 2013 was 8,5 percent (with 50,8 TWh producing a third of Germany's renewable energy). I don't see how Germany's current progress could either prove or disprove the thesis proposed. If anything, onshore wind could at least grow a lot more, and when more offshore wind comes online, the figure can rise substantially further.

And to undo my own example, I don't think taking Germany (or another nation) as an example is ultimately sufficient - the scope is still too local for a systemic analysis.

by Bjinse on Wed Jun 10th, 2015 at 04:00:44 AM EST
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