Compare like with like. Aligned scores, specifications and local evidence within one scoring class or tier.
Market context
Australia purchasing view
GoodWe | GW6000-ET-20 / GW8000-ET-20 / GW9900-ET-20 / GW12K-ET-20 / GW15K-ET-20
80/ 100
Strong evidence coverage · 100%
Evidence checked 2026-08-06
Available in Australia · checked 2026-10-07
Buyer evidence: Ready (100% direct coverage).
AlphaESS | SMILE-M8-S-INV, SMILE-M9-S-INV and SMILE-M10-S-INV; scored M10 at 9.999 kW local rating
66/ 100
Strong evidence coverage · 100%
Evidence checked 2026-09-01
Available in Australia · checked 2026-08-27
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 | ET G2 Three-Phase Hybrid | SMILE-M-S Inverter |
|---|---|---|
| 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 | ET G2 Three-Phase Hybrid | SMILE-M-S Inverter |
|---|---|---|
| Architecture | Hybrid inverter | Hybrid inverter |
| Published rated AC power range | 6–15 kW | 8–9.999 kW |
| Scored benchmark | 15 kW | 9.999 kW |
| Power | 15.0 kW | 9.999 kW |
| Type | Hybrid | Hybrid |
| Peak eff | 98.2 % (better value on this row) | 97.47 % |
| MPPTs | 3 | 4 (better value on this row) |
| Evidence | ET G2 Three-Phase Hybrid | SMILE-M-S Inverter |
|---|---|---|
| Outcome | Available in Australia | Available in Australia |
| Checked | 2026-10-07 | 2026-08-27 |
| Certifications | The Australian CEC approved-inverter export dated 24 September 2026 lists exact GW6000-ET-20, GW8000-ET-20, GW9900-ET-20, GW12K-ET-20 and GW15K-ET-20 models to AS/NZS 4777.2:2020 through 29 October 2027., The exact system manual lists IEC 62109-1/-2, VDE-AR-N 4105 and EN 50549-1. A TÜV Rheinland Australia certificate of suitability published by GoodWe (AZ 69027616, issued under JAS-ANZ accreditation, 17 November 2023 to 17 November 2028) lists the same five models to IEC 62109-1:2010, IEC 62109-2:2011 and AS/NZS 4777.2:2020+A1. | The current CER snapshot lists M8, M9 and M10, approved 7 July 2026 and expiring 7 July 2029. |
| Warranty scope | Australia and New Zealand; GoodWe's current Rev 5.9 limited warranty, dated 17 September 2026, explicitly places ET G2 under 10 years of cover for eligible products. | Australia; the exact SMILE-M-S inverter warranty provides ten years for the named M8, M9 and M10 family. |
| Warranty remedy | Configuration change, repair or replacement at GoodWe's discretion. | AlphaESS may repair, replace or otherwise settle an accepted claim under the governing terms. |
| Labour and reinstallation | GoodWe may provide authorised on-site service or a conditional service rebate. On-site labour support is conditional and requires prior authorisation. | Reasonable accepted claim costs may be covered, subject to authorization and installer participation. Full removal and reinstallation reimbursement is not promised unconditionally. |
| Freight | Normal ground transport is covered up to GoodWe's stated case limit. | Replacement-part freight is covered within the stated process; broader transport is not unconditional. |
| Transfer and registration | No express subsequent-owner transfer right was found in the governing terms. The standard ET G2 term is listed as 10 years; claim and monitoring conditions in the governing terms still apply. | Coverage follows the product at the original installation site when the building changes ownership. Purchase, installation and claim evidence are required. |
| Grid/network approval evidence | Three-phase 380/400 V hybrid family with exact-model CEC listings. DNSP acceptance, export settings, battery pairing and backup design remain installation-specific. | The exact model or family appears in the current Australian approved-inverter export. DNSP settings, export limits and site design 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 | The 15 kW GW15K-ET-20 is the scored series benchmark. CEC listings are dynamic and should be checked before installation. | This is the inverter layer only. Existing AlphaESS battery records remain separate, and no product-pair recommendation is published. The exact M8/M9/M10 inverter manual specifies Smart Fan Cooling, with noise below 45 dB(A) at 1 m. These models are not documented as fanless; natural cooling in the same manual applies to the separate lower-power M5/M3.6/M5-B models. |
| Register: parts term | stated: Ten-year limited warranty for ET G2. | Not in the structured register |
| Register: labour and service | conditional: GoodWe may arrange paid authorised engineers or offer a discretionary service rebate after authorisation and confirmation of a covered defect. | Not in the structured register |
| Register: transport and freight | conditional: Normal ground transport is covered up to a per-case amount available from GoodWe; excess and alternate transport remain with the claimant. | Not in the structured register |
| Register: registration | not stated: ET G2 is listed with a ten-year base term and no separate pre-registration step. The document warns that warranty may not apply if required remote firmware access is withheld. | Not in the structured register |
| Register: transferability | not stated: No subsequent-owner transfer right was located in the governing instrument. | Not in the structured register |
| Register: explicit unknowns | 2 retained | Not in the structured register |
| Latest reviewed Approval Watch event | No exact-identity event in reviewed history | No exact-identity event in reviewed history |
| Sources | Source 1Source 2Source 3Source 4Source 5Source 6 | Source 1Source 2Source 3Source 4Source 5 |
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 Inverter class, on the same rubric weighting. Scores are not comparable across classes or tiers. Full methodology.