Overview

• Germany has registered over one million plug-and-play balcony solar plants after adding more than 200,000 systems in the first half of 2025.
• Retailers are offering 1 kW starter kits for under €300, driving fierce competition on price.
• Modular battery packs from providers like Anker, Growatt, Maxxicharge and Marstek, ranging from 1.6 to 5 kWh, are broadening options for self-consumption.
• A draft IEC 60364-7-751 installation standard could require special connectors or dedicated circuits and professional fitting at additional costs of €200–€400 per system.
• Trade associations and manufacturers are lobbying German standard bodies for carve-outs that would exempt low-capacity systems from the new requirements.