Compare like with like. Aligned scores, specifications and local evidence within one scoring class or tier.
Market context
Australia purchasing view
Solis | S6-GR1P3K-S / S6-GR1P3.6K-S / S6-GR1P4K-S / S6-GR1P4.6K-S / S6-GR1P5K-S / S6-GR1P6K-S; scored model S6-GR1P6K-S
62/ 100
Strong evidence coverage · 100%
Evidence checked 2026-08-02
Available in Australia · checked 2026-08-02
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 2026-08-11
Available in Australia · checked 2026-08-11
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 | S6-GR1P | 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 | S6-GR1P | H3-Pro |
|---|---|---|
| Architecture | Solar-only string 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 | String | Hybrid |
| Peak eff | 97.7 % | 98.1 % (better value on this row) |
| MPPTs | 2 | 3 (better value on this row) |
| Evidence | S6-GR1P | H3-Pro |
|---|---|---|
| Outcome | Available in Australia | Available in Australia |
| Checked | 2026-08-02 | 2026-08-11 |
| Certifications | The exact Australian datasheet publishes AS/NZS 4777.2:2020 and IEC 62109-1/-2 compliance. | The CER export last modified 10 August 2026 lists exact H3-Pro-15.0 through 21 January 2029., The current Australian datasheet and manual identify H3-Pro-15.0 as a three-phase storage inverter. |
| Warranty scope | Five-year standard limited warranty plus a further five years for eligible units purchased from 1 January 2024 when registered and kept connected to SolisCloud, subject to the published terms. | The current Australian warranty expressly includes H3-Pro-15.0. The standard term is 120 months from installation, capped at 132 months after manufacture. Conditional service-rebate and transport provisions do not establish unrestricted labour or freight cover. |
| Warranty remedy | Repair, replacement, refund or credit at Solis's option. | FoxESS may repair onsite or at a service centre, or replace with the closest current product. |
| Labour and reinstallation | Removal and installation labour are excluded unless separately agreed. Removal and reinstallation are excluded unless separately agreed. | An installer service rebate may be approved, but its amount and eligible work are not stated; travel, onsite installation, modification and maintenance are excluded. Unrestricted removal and reinstallation cover is not stated. |
| Freight | Transport is excluded unless separately agreed. | Eligible road transport to one specified address may be provided; express and onward shipping are excluded. |
| Transfer and registration | No automatic transfer right was found; any transfer requires Solis's written approval. The further five years require SolisCloud; paid 10, 15 and 20-year options are available. | No automatic subsequent-owner transfer right is stated. Registration is recommended for standard cover and required for FoxPlus; the FoxPlus section contains a conflicting 72-month standard-period reference. |
| Grid compatibility | Single-phase Australian grid-tied family with AS/NZS 4777.2:2020 compliance. | Three-phase Australian identity. CER product listing does not establish DNSP, site, export-limit, installation or commissioning approval. |
| 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 | Solis Australasia publishes the exact family datasheet, manual, certificates and local support contacts. | FoxESS Australia publishes the exact product family and support materials. External switching and battery requirements remain outside this independent inverter record. |
| Register: parts term | Not in the structured register | stated: The exact H3-Pro family receives 120 months from installation, no later than 132 months after manufacture, whichever occurs first. |
| Register: labour and service | Not in the structured register | conditional: FoxESS may repair onsite or at a service centre, replace the product, and approve an installer service rebate. The rebate amount and eligible work are not stated, while travel, onsite installation, modification and maintenance are excluded. |
| Register: transport and freight | Not in the structured register | conditional: Eligible road transport to one specified address may be provided. Express freight and onward shipping are excluded. |
| Register: registration | Not in the structured register | conditional: Registration is recommended for the standard term and required for FoxPlus. The policy's FoxPlus wording also refers to a 72-month standard period, which conflicts with the exact 120-month H3-Pro table. |
| Register: transferability | Not in the structured register | not stated: The policy defines purchaser, installer and end-user roles but does not state an automatic subsequent-owner transfer right. |
| Register: explicit unknowns | Not in the structured register | 4 retained |
| Latest reviewed Approval Watch event | No exact-identity event in reviewed history | No exact-identity event in reviewed history |
| Sources | Source 1Source 2Source 3Source 4 | Source 1Source 2Source 3Source 4Source 5Source 6 |
These checks sit beside the benchmark score. They are site, tariff and contract questions that no product score can settle.
Ask for every model number to appear on the quote and order. The Clean Energy Council product lists are live: STC creation requires listed products at installation, and network requirements may also depend on current approval.
Have the retailer state the supply phase, inverter connection limit, export limit and any export-control cost. The local network connection agreement, not a generic datasheet, determines those settings. See the Australian Government's connection guidance.
Ask which bills or interval data, tariff, feed-in rate, export limit and future loads support the savings and payback claim. Self-consumed electricity and tariff timing usually matter more than a headline feed-in rate. See the system sizing and battery savings guidance.
Confirm the proposed inverter phase, PV input design, battery pairing and export-control configuration against the final connection agreement. A suitable product can still require a different site design or control setting.
Keep the retailer, installer, manufacturer warranty and escalation path in the contract. Australian Consumer Law guarantees apply separately from any manufacturer warranty; where one business supplied both product and installation, it is generally responsible for the remedy. See the ACCC guidance.
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.