Overview
- Retailers and vendors pushed heavy promotions in late September, offering complete 2 kWp–4 kWp plug‑and‑play kits for roughly €1,200–€1,900 and a few 6,000 Wp bundles around €3,600, driven in part by Anker’s launch of the larger SOLIX 4.
- New hardware and software features are central to the trend: consumer batteries now use LiFePO4 chemistry, multi‑MPPT inputs, AI energy‑management, and larger usable capacity (Anker SOLIX 4 is marketed with about 5 kWh usable, four MPPTs and up to 5,000 W PV input).
- Vendors are selling module nameplate power well above the traditional 800 W export reference by routing midday excess into storage, offering proprietary controllers with legal opinions, or advising formal registration so larger arrays can operate lawfully.
- Reported bargains often omit real‑world costs: mounting systems are frequently not included, delivery lead times can be several weeks, and buyers may need to pay for Marktstammdatenregister registration, network‑operator approval or electrician work and optional vendor registration services.
- The net effect is a faster path to cheap household solar and short advertised paybacks of about 2–6 years, but actual savings and time to operation depend on self‑consumption, local irradiation, whether extra hardware or services are bought, and controller output limits that cap simultaneous household feed‑in.