29 Apr '11, 5pm

以前にデンマークで風力発電用の風車に対する風当たりが強くなっている事をツイートしたが、周辺国との電力のやり取りやどのように安定しない風力と付き合うかなど、知識は確実に蓄積されている。http://bit.ly/fE84Bi

Hello there, and thanks for the coverage (I’m the author). Re hydro fluctuations and exports: there are at least two separate things going on, at different timescales – please allow me to distinguish them. 1) At the minute-by-minute level, Denmark exports its variations in wind, but even more so it exports its variations in demand, to its neighbours who, as Bill Woods says, can turn their hydro up and down quickly. 2) At the year-by-year level, when Norway/Sweden/Finland have had a dry year, then they import a lot of power, including from Denmark – so Denmark’s electricity exports have a large spike lasting many months, driven by the higher prices from their neighbours. These exports come from thermal plant (biomass, coal, gas) that runs higher and longer because it’s profitable for them to do so. Being part of a larger system is a very good way to integrate lots of renewa...

Full article: http://cleantechnica.com/2011/03/05/how-denmark-will-inte...

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