Stor utfordring for solenergi
Kostnadene ved solenergi faller raskt, og kraftig. Men ettersom solenergien, konsentrert i en relativt kort periode på dagen, utgjør en større del av total elproduksjon, faller også prisen på denne kraftten sterkt. Brad Plumer skriver langt hos Vox om ny forskning på dette og mulige løsninger, og konkluderer med at produksjonskostnadene må falle enda mer enn hittil beregnet.
"The problem comes when you keep adding more and more solar panels to a given grid. As that happens, the wholesale price of electricity keeps falling during midday. And that means, in a competitive power market, all those solar plants reap less and less revenue over time. New solar installations become less economical pretty rapidly. (...)
Sivaram and Kann agree that the latter two mitigation strategies are especially promising. But they may ultimately prove limited. One study of California looked at an extremely optimistic case for deploying storage, in which battery prices fall faster than anyone expects by 2030. The authors found this would alleviate just 30 percent of value deflation for solar. That same study found that smart demand management would alleviate another 15 percent. That's helpful … but not enough."
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