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Until recently proponents of all RE grid have argued that a combination of hydro and batteries could turn unreliable power into reliable. But this solution has proven limited at best and transparently silly at worst. It does not scale planet wide.
The new solution to intermittency is green hydrogen. Hydrogen is produced from wind and solar electricity by splitting water with electrolysis. When the wind does not blow nor the sun shine, the hydrogen is converted back to electricity, by burning it in a gas turbine.T his piece examines how this solution fares in the context of Germany.