Overview
- Retailers and discounters reported in early November are selling 2,000 Wp plug‑and‑play kits with integrated batteries at roughly €1,200–€1,800, triggering steep price competition across specialist shops and discounters.
- German rules allow module arrays up to 2,000 Wp while limiting inverter feed‑in to 800 W, so vendors pair larger panels with batteries so surplus generation charges storage instead of being wasted.
- Regulatory clarity: complete sets around 6 kWp are treated as regular photovoltaic installations and must be registered in the Marktstammdatenregister and notified to the network operator even though systems under about 7 kWp can often use a simplified VDE‑AR‑N 4105 procedure.
- Product segmentation is shifting as discounts make the older Anker SOLIX 3 the value choice for most balconies while the newer SOLIX 4 targets customers who need a larger base battery, stronger backup output, or planned expansion.
- Wider impact: cheaper, modular PV+storage kits raise self‑consumption from typical ~30% without storage to as much as ~80% with batteries, which can speed payback for households but also increases the need for buyers to check registration rules and, for hardwired or larger installs, involve an electrician.