Budget
€0–€300
Published category bar
Balcony Solar Kits (plug-in solar bundles, DE: max. 800 W feed-in)
This is the exact versioned market bar used by the deterministic engine. It defines what is mandatory, typical and above-class for each European price class.
- Version
- 2026.07-4
- Status
- Active
- Price classes
- 4
European price classes
Mid-range
€300–€600
Upper mid-range
€600–€1200
Premium
€1200+
The lowest documented European price selects the class. Within ±10% of a boundary, both neighbouring classes are calculated and the better result counts.
Mandatory category features
Inverter with grid and system protection (NA-Schutz) per VDE-AR-N 4105; AC feed-in power of at most 800 W or permanently limitable to 800 W
CE marking, incl. radio equipment compliance (RED 2014/53/EU) for Wi-Fi/Bluetooth inverters or storage units
Ready-to-connect complete kit: panels, inverter and connection cable with a household plug (Schuko or Wieland) included
Expected features by price class
Budget
- Combined panel power of at least approx. 800 Wp (typically 2 panels of approx. 400-450 Wp each)
- Inverter up to 800 W with Wi-Fi and app monitoring (real-time power and yield history; e.g. Growatt, Hoymiles, TSUN, Deye)
- Connection cable with plug in a practical length (approx. 3-5 m) included
- Approx. 25-year performance warranty on the panels (at least approx. 80% remaining output)
Mid-range
- Bifacial glass-glass panels with approx. 860-1,000 Wp combined
- Suitable mounting kit included (balcony railing, wall or ground stand selectable)
- Inverter with 2 MPPT trackers (panels optimised independently of each other)
- App shows per-panel power plus daily, monthly and yearly yields
- Product warranty on the inverter of at least approx. 10 years
Upper mid-range
- LiFePO4 storage with approx. 1.5-2 kWh capacity included in the kit
- Storage modularly expandable (to at least approx. 4-5 kWh)
- Connection of up to 4 panels / approx. 2,000 Wp panel power possible
- App with energy flow view and adjustable feed-in power
- Storage suitable for outdoor use (approx. IP65 rating)
Premium
- Storage from approx. 2.5 kWh in the kit, expandable to approx. 10 kWh or more
- Integration of dynamic electricity tariffs (e.g. Tibber, aWATTar) with forecast- or price-driven charging plans
- Bidirectional grid charging of the storage (use cheap low-price hours)
- Demand-based feed-in / zero feed-in via smart meter or measuring device coupling (e.g. Shelly)
- Approx. 10-year warranty on the storage unit
Above-class bonus features
- Equipment clearly above class expectation (e.g. storage below EUR 600, bifacial panels plus mounting in the budget class, 4 MPPT in the mid class)+4
- Local control without forced cloud (official Home Assistant/MQTT integration, local API or OpenDTU support)+4
- App data optionally on EU servers with documented GDPR compliance+3
- Inverter, connection/extension cables and — for kits with storage — battery modules individually available from EU retailers (the inverter is statistically the most failure-prone part)+3
- Backup power function (outlet on the storage unit / off-grid mode during blackouts)+3
- Storage with self-heating for charging below approx. 0 °C (winter operation)+3
- Performance warranty of approx. 30 years or more on the panels+2
- Structurally certified mounting with wind load verification (DE: also suitable for mounting heights above 4 m)+2
- Registration service or guided German MaStR registration included (registration data of the kit fully prepared)+2
- Optionally available with Wieland feed-in socket or fixed-connection kit+2
- Panels with high efficiency of approx. 23% or more (e.g. N-type/TOPCon)+2
Negative characteristics
- Documented inverter compliance defects (e.g. missing grid protection relay, withdrawn or forged certificates)-8
- Documented incident: severe cloud security flaw (e.g. heise/CCC report, CVE entry) or manufacturer-triggered remote shutdown or throttling at end customers without local fallback control-5
- Subscription required for core functions (e.g. yield history, tariff optimisation only for a fee)-5
- Monitoring app not usable from the EU: not listed in EU app stores, no German or English interface, or registration only possible with a Chinese phone number-4
- Repeatedly documented severe app defects (connection drops, server outages, data loss)-4
- Proprietary panel/connection plugs instead of MC4 standard, accessories only overpriced from the manufacturer-3