Eon: Saarland and Bavaria Lead in Solar Power Generation in 2025

MUNICH (dpa-AFX) — Homeowners in southern Germany enjoy a slight advantage when it comes to solar energy production: Last year, private solar installations in Saarland and Bavaria generated the highest average amounts of electricity. Schleswig-Holstein ranked at the bottom, according to calculations by energy company Eon based on data from the German Weather Service and the Federal Network Agency. For their analysis, the authors assumed a typical private rooftop solar installation with a capacity of 10 kilowatt peak.

Over 900 Kilowatt-Hours Difference from North to South

Leading the pack was Saarland, with an average generation of 10,904 kilowatt-hours of solar power, five kilowatt-hours more than in Bavaria. In contrast, the average output of a private solar installation in Schleswig-Holstein was only 9,979 kilowatt-hours—over 900 kilowatt-hours less.

Hamburg also did not particularly benefit from the sun in 2025, according to Eon, with an average output of 10,000 kilowatt-hours, placing it second to last. However, there is no consistent north-south gradient: Mecklenburg-Western Pomerania ranked fifth (10,398 kWh), and Rhineland-Palatinate (10,098 kWh) was ahead of Hamburg in third-to-last place.

Significant Local Weather Variations

However, the average figures do not reveal the significant local differences: According to an analysis by the German Weather Service, two Bavarian municipalities also topped the list of Germany’s least sunny locations last year: Oberstdorf in the Allgäu and Regensburg./cho/DP/zb