Renewables Helped France Avoid Freezing in the DarkIn a startling development widely reported across Europe in the English-, French-, and German-language press, France imported electricity to meet peak demand during a brutal cold snap February 7, 2012. And one of the countries France imported electricity from was Germany. Post Fukushima, Germany closed two-fifths of its nuclear reactors and there were fears that Germany would not be able to meet its own demand let alone export electricity. Nuclear reactors provided one-fourth of Germany's electricity before Fukushima. Available French nuclear capacity was operating flat-out with three reactors off line. However, France's famed nuclear fleet delivered only 60 percent of the 100,000 MW of peak load experienced at 7:00 p.m. (19:00 hours) as millions of French homeowners switched on their electric heaters. The remainder of demand was met by oil, coal, hydro, imports from neighboring countries, and renewables.
French wind turbines produced 3,600 MW at the time, or 3.6% of demand. There is 6,600 MW of wind capacity installed in France. Thus, wind delivered 55% of its installed capacity during peak demand, indicating good but not exceptional wind in parts of France. The amount of wind generation during peak demand was roughly equivalent to the three nuclear reactors that were not available at the time. France imported 1,800 MW or 1.8 percent of peak demand from Germany. (Note that the following table is subject to change as more information becomes available.)
Both French and German grid operators noted that there was never any danger of a blackout as operators held some hydroelectric capacity on standby as an emergency reserve. German Supply during French Peak Demand Meanwhile, Germany was enduring the same Arctic weather as France. The sun had set so Germany's solar photovoltaic capacity was not contributing to supply.
Winds were lighter in Germany than in France, but Germany's fleet of 29,000 MW of wind turbines was generating 6,300 MW at the time for about 22 percent of their potential. Nevertheless, German wind turbines were providing 9 percent of total German demand, more than enough for Germany to export electricity to France. Earlier in the day, wind and solar in Germany met nearly 12 percent of German demand. It is likely that German biogas and biomass plants also contributed significantly to supply. However, the public data source, EEX Transparency Platform, does not report biogas and biomass separately from conventional generation. The information and views expressed in this article are those of the author and not necessarily those of RenewableEnergyWorld.com or the companies that advertise on its Web site and other publications.
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paul gipe
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Nuclear reactors provided one-fourth of Germany's electricity before Fukushima."
In the year before the plant closures nuclear power provided 23% of generation and in the year after it provided 18% of generation. Germany may have closed 40% of its nuclear reactors, but nuclear generation was only down ~22% in 2012.
The article gives an incomplete picture because it does not mention German imports at all. Conceivably Germany was importing electricity at the same time it was exporting it--on a continent wide grid that isn't inconceivable. Furthermore, a 1-day snapshot is not fully reflective of the import/export situation. Germany HAS been importing electricity following the closure of its nuclear reactors during times when it used to be an exporter. Here is one anecdotal report:
http://www.nucleartownhall.com/blog/after-shutting-down-reactors-germany-imports-nuclear-electricity-from-neighbors/
This report in April 2011 pegs German imports at 12 percent of demand and coming mostly from France and the Czech Republic.
Imports and exports between Germany and France are nothing new. This article:
http://www.bloomberg.com/news/2011-05-30/areva-s-lauvergeon-says-germany-will-import-nuclear-power.html
claims in 2010 electricity exports from Germany to France totaled 16.1 TWh and imports from France to Germany totaled 9.4 TWh. It would be interesting to see what the 2011 import/export data was....
If Germany phases out all of its nuclear power on the stated schedule it is hard to see how it does not become a major net importer of electricity. The anecdotal data in the article above should not lead one to believe otherwise.
Steven