Overview
- Retailers and discounters posted a wave of heavily reduced complete plug‑and‑play PV plus battery kits in recent listings, with advertised prices ranging from about €1,249 to €3,615 for systems marketed between 2 kWp and 6 kWp.
- The deals often promise short payback times of roughly three to six years by combining large bifacial modules, multi‑MPPT inverters and modular batteries that raise self‑consumption compared with module‑only sets.
- German practice still limits simple plug‑in feed‑in to roughly 800 watts and treats systems with high module totals (commonly cited around 2,000 Wp) as standard PV installations, so many XXL kits exceed the informal ‘Balkonkraftwerk’ boundary.
- Some vendors advertise technical or legal workarounds and paid registration services to simplify connection for larger kits, but multiple listings warn of missing mounting hardware, long delivery times and likely extra costs for an electrician or formal grid registration.
- Households should weigh headline prices against real‑world factors such as required mounts, smart‑meter or Wieland sockets, delivery lead times and inverter output limits, because those add costs and determine whether a kit can be used as a simple plug‑in system or must follow full PV rules.