The steep increase, first flagged last week, is likely to trigger another round of discussions about soaring energy prices in Europe’s biggest economy.

Earlier rises in the surcharge had led to calls for a reform of Germany’s renewable energy act with its relatively generous feed-in tariffs (FITs) for renewables.

Renewable groups and Germany’s Green opposition hold exemptions from the surcharge for heavy industries, as well as distortions in Germany’s electricity pricing system, responsible for the new rise.

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