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Germany's updated Renewable Energy Sources Act (EEG) raised the permitted output for plug-in balcony solar systems (Balkonkraftwerk) from 600W to 800W in early 2024, and the 2026 amendment now allows up to 2 kW for terraces. Registration via the Marktstammdatenregister remains required. An estimated 500,000 balcony systems are now installed across Germany.
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