Overview
- Retailers have been promoting heavily discounted complete PV + Anker SOLIX bundles across 1 kW–6 kW sizes, with multiple deal pages and shop offers visible through Monday, October 12, 2026.
- Very large advertised sets such as 6,000 Wp exceed the informal 'privileged' balkonkraftwerk limits and must be treated as regular PV systems that require registration and installation by an electrician.
- Anker’s SOLIX Solarbank 4 Pro is sold as a modular 5 kWh LiFePO4 storage with configurable output up to 2,500 W and the SOLIX Power Dock (promoted at €299) can couple multiple banks to provide a 1‑ or 3‑phase house connection for larger, hard‑wired setups.
- Regulation and inverter design (NA‑Schutz under VDE AR‑N 4105) force grid‑tied microinverters to disconnect in a grid outage, so only systems with integrated notstrom sockets on the battery can power a few devices directly and cannot feed the whole house.
- Independent tests and vendor pages report real trade‑offs: measured round‑trip efficiency losses around 18–20% reduce usable stored energy, advertised annual savings and amortisation depend strongly on orientation, shading, self‑consumption and local electricity prices.