Compare like with like. Aligned scores, specifications and local evidence within one scoring class or tier.
Market context
Germany purchasing view
Fronius | Verto 15.0 Plus / 17.5 Plus / 20.0 Plus / 25.0 Plus / 30.0 Plus / 33.3 Plus; scored model Verto 33.3 Plus
82/ 100
Strong evidence coverage · 100%
Evidence checked 2026-08-30
Available in Germany · checked 2026-08-30
Buyer evidence: Ready (100% direct coverage).
Enphase | IQ9N-A-INT; 427 VA exact Australian model
63/ 100
Strong evidence coverage · 100%
Evidence checked 2026-08-30
Available in Germany · checked 2026-08-30
Buyer evidence: Ready (100% direct coverage).
marks the better value on rows where a higher number is better. Temperature coefficient counts as higher when it is closer to zero. Size measures such as rated power carry no marker, because a larger product is a different choice rather than a better one.
| Measure | Verto Plus | IQ9N-A Microinverter |
|---|---|---|
| Efficiency | ||
| Design & Flexibility | ||
| Thermal & Physical Resilience | ||
| Features & Integration | ||
| Safety & Compliance | ||
| Guarantee & Backbone | ||
| Energy Ecosystem |
marks the better value on rows where a higher number is better. Temperature coefficient counts as higher when it is closer to zero. Size measures such as rated power carry no marker, because a larger product is a different choice rather than a better one.
| Measure | Verto Plus | IQ9N-A Microinverter |
|---|---|---|
| Architecture | Hybrid inverter | Microinverter |
| Published rated AC power range | 15–33.3 kW | 0.427 kW |
| Scored benchmark | 33.3 kW | Not stated |
| Power | 33.3 kW | 0.427 kW |
| Type | Hybrid | Micro |
| Peak eff | 98.15 % | Not recorded |
| MPPTs | 3 (better value on this row) | 1 |
| Evidence | Verto Plus | IQ9N-A Microinverter |
|---|---|---|
| Outcome | Available in Germany | Available in Germany |
| Checked | 2026-08-30 | 2026-08-30 |
| Certifications | The German Verto Plus datasheet names Verto 15.0 Plus through Verto 33.3 Plus, including the scored 33.3 Plus, and lists IEC 62109-1/-2, VDE-AR-N 4105:2018, VDE-AR-N 4110:2023-09 and EN 50549-1/-2. | The German store page names SKU IQ9N-A-INT and 427 VA. The IQ9N-A-INT sheet lists EN IEC 62109-1/-2 safety and CE labelling. |
| Warranty scope | Germany; country group 1. Inverters up to 49 kW receive 10 years (5 years Warranty Plus then 5 years Warranty). The scored Verto 33.3 Plus is inside that band. Solar.web registration within 30 months of factory delivery is required. | Germany; the 30 September 2025 German microinverter schedule explicitly lists IQ9N-A-INT for a 25-year product term from activation. |
| Warranty remedy | Fronius provides the required spare part or an equivalent replacement, or reimburses market value, under the governing terms. | Enphase may repair, replace or provide a depreciated market-value refund. |
| Labour and reinstallation | Approved removal and replacement labour is covered during the Warranty Plus period when Fronius or a Fronius-commissioned installer performs the work. Approved component removal and replacement are covered during the Warranty Plus period. Work on other site equipment is excluded. | Uninstall, reinstall and ordinary site labour are not limited-warranty entitlements. Removal and reinstallation are excluded from the limited warranty. |
| Freight | Standard national shipping to the Fronius repair centre, and return of the spare or replacement, is covered during the Warranty Plus period. Express, air and sea freight are excluded. | Eligible RMA return freight uses Enphase's prepaid label. Enphase pays shipment of the repaired or replacement product after an accepted claim. |
| Transfer and registration | Remaining claim rights transfer with ownership of the covered inverter. The term is not extended by the transfer. Inverters must be registered on Solar.web within 30 months of factory delivery. Unauthorised repairs are not covered. | Same-site transfer requires the owner-change form and fee within 30 days. Covered SKUs must match the German schedule. Continuous internet connectivity is required except for interruptions outside the owner's reasonable control. |
| Grid/network approval evidence | Three-phase German hybrid family with exact VDE-AR-N 4105 and EN 50549 evidence naming Verto 33.3 Plus. Backup switching and export settings remain installation-specific. | The reviewed IQ9N-A-INT sheet prints grid compliance as AS/NZS 4777.2 and does not print VDE-AR-N 4105. German connection approval remains installation-specific. |
| Local product pathway | No separate local pathway recorded | No separate local pathway recorded |
| Buyer evidence | Ready (100% direct coverage): Local availability, buyer evidence, and the publication threshold are confirmed. | Ready (100% direct coverage): Local availability, buyer evidence, and the publication threshold are confirmed. |
| Safety notice | No model-specific notice recorded | No model-specific notice recorded |
| Review note | Fronius Germany's technical-data catalogue names Verto 15.0 Plus through Verto 33.3 Plus. Verto 27.0 without Plus is a different identity and is not transferred onto this record. | Enphase's German store lists IQ9N-A-INT. IQ9N-A-DOM-US is a different SKU and is not this record. The INT sheet remains the specification source; distributor stock is not inferred. |
| Sources | Source 1Source 2Source 3Source 4Source 5Source 6 | Source 1Source 2Source 3Source 4 |
A score lead is only meaningful inside this shared class or tier. Weigh it against the specification and evidence rows above before deciding.
Both products are scored in the Inverter class, on the same rubric weighting. Scores are not comparable across classes or tiers. Full methodology.