“Many recent posts on this blog have dealt with the theme of the infeasibility of a fully wind/solar/storage electricity system. Today I will deal with another study of the subject, this one from German authors Oliver Ruhnau and Staffan Qvist, titled “Storage requirements in a 100% renewable electricity system: Extreme events and inter-annual variability.” The Ruhnau/Qvist study does not have a date other than “2021,” although it appears to have come out toward the end of that year.”

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