Compare like with like. Aligned scores, specifications and local evidence within one scoring class or tier.
Market context
Germany purchasing view
SOFAR | ESI 3K-S1, ESI 3.68K-S1, ESI 4K-S1, ESI 4.6K-S1, ESI 5K-S1 and ESI 6K-S1
73/ 100
Strong evidence coverage · 100%
Evidence checked 2026-08-30
Available in Germany · checked 2026-08-30
Buyer evidence: Ready (100% direct coverage).
FoxESS | H3-Pro-15.0 (15 kW model in the H3-Pro 15-30 kW range)
74/ 100
Strong evidence coverage · 100%
Evidence checked 2026-08-30
Available in Germany · checked 2026-08-30
Buyer evidence: Ready (100% direct coverage).
Full scorecardmarks 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 | PowerAll ESI 3-6K-S1 | H3-Pro |
|---|---|---|
| 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 | PowerAll ESI 3-6K-S1 | H3-Pro |
|---|---|---|
| Architecture | Hybrid inverter | Hybrid inverter |
| Published rated AC power range | 3–6 kW | 6–15 kW |
| Scored benchmark | 6 kW | 15 kW |
| Power | 6.0 kW | 15.0 kW |
| Type | Hybrid | Hybrid |
| Peak eff | 97.8 % | 98.1 % (better value on this row) |
| MPPTs | 2 | 3 (better value on this row) |
| Evidence | PowerAll ESI 3-6K-S1 | H3-Pro |
|---|---|---|
| Outcome | Available in Germany | Available in Germany |
| Checked | 2026-08-30 | 2026-08-30 |
| Certifications | The German ESI 3-6K-S1 product page names the exact family. The manufacturer manual lists Germany VDE-AR-N 4105 as a selectable grid code for ESI 3K-S1 through ESI 6K-S1. | The German H3 Pro datasheet V2.2 names H3-Pro-15.0 through H3-Pro-30.0 and prints EN 62109-1/-2 with IEC 61000-6-2/-3. Further certifications are marked as available on request. |
| Warranty scope | Germany; a Europe-outside-Germany battery instrument is not this inverter overlay. No German inverter warranty naming ESI 3-6K-S1 was attached, so six-field terms are not transferred from the Australian factory warranty. | Germany; the 4 December 2025 German inverter instrument names Hybrid-Serie and H3 Plus-Serie at 60 months. It does not name H3-Pro-15.0, so six-field terms are not attached from that instrument or from the Australian 120-month table. |
| Warranty remedy | Not established | Not established |
| Labour and reinstallation | Not established | Not established |
| Freight | Not established | Not established |
| Transfer and registration | Not established | Not established |
| Grid/network approval evidence | Single-phase 220/230/240 V PowerAll inverter family. The manual lists VDE-AR-N 4105. DNSP and site settings remain installation-specific. ESI-5-12K-T1 is a different family. | Three-phase 400/230 V hybrid family named on the German product page. The reviewed German V2.2 sheet does not print VDE-AR-N 4105. DNSP and site settings remain 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 | de.sofarsolar.com names ESI 3-6K-S1. BTS 5K composition in PowerAll manuals is documented identity, not a pairing recommendation. Manufacturer listing is established; distributor inventory is not inferred. | de.fox-ess.com lists H3 PRO 15-30 kW and the German datasheet names H3-Pro-15.0. H3 Plus 50-125 kW, H3 Smart and H3-M are different identities. Manufacturer listing is established; distributor inventory is not inferred. |
| Sources | Source 1Source 2Source 3 | 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 Value & Volume class, on the same rubric weighting. Scores are not comparable across classes or tiers. Full methodology.