Compare like with like. Aligned scores, specifications and local evidence within one scoring class or tier.
Market context
Australia purchasing view
GoodWe | ESA G20 single-phase all-in-one platform; scored reference GW8K-EHA-G20 with GW8.3-BAT-D-G20 (8.0 kWh usable)
65/ 100
Strong evidence coverage · 100%
Evidence checked 2026-08-07
Available in Australia · checked 2026-08-07
Buyer evidence: Ready (100% direct coverage).
AlphaESS | SMILE-G3-S5-INV with SMILE-G3-BAT-9.3S
62/ 100
Strong evidence coverage · 100%
Evidence checked 2026-08-02
Available in Australia · checked 2026-08-02
Buyer evidence: Ready (100% direct coverage).
| Measure | ESA G20 | Smile G3 S5 BAT-9.3S |
|---|---|---|
| Capacity & Usability | ||
| Power & Efficiency | ||
| Longevity (verified) | ||
| Safety & Chemistry | ||
| Guarantee & Backbone | ||
| Energy Ecosystem |
| Measure | ESA G20 | Smile G3 S5 BAT-9.3S |
|---|---|---|
| Architecture | All-in-one energy system | DC-coupled battery |
| Published usable capacity range | 5–48 kWh | 9.3–37.2 kWh |
| Scored benchmark | 8 kWh | 9.3 kWh |
| Chemistry | LFP | LFP |
| Power | 8.0 kW | 5 kW |
| Round-trip | Not recorded | Not recorded |
| Cycle life | Not recorded | Not recorded |
| Evidence | ESA G20 | Smile G3 S5 BAT-9.3S |
|---|---|---|
| Outcome | Available in Australia | Available in Australia |
| Checked | 2026-08-07 | 2026-08-02 |
| Certifications | The exact battery datasheet publishes CEC, RCM, IEC 62619, IEC 63056 and IEC 62040 certification. | The current Australian approved-battery export lists SMILE-G3-BAT-9.3S and stacks through six modules to 31 December 2027; the exact system datasheet publishes IEC 62619 and AS/NZS 4777.2. |
| Warranty scope | Australia and New Zealand; GoodWe Technologies Co., Ltd provides the 10-year product and performance warranty. GoodWe Australia Pty Ltd is named as the Australian importer and service contact. The GW8.3-BAT-D-G20 term is 29.20 MWh or 10 years at 70% retained usable energy, whichever occurs first. | The exact Australian datasheet publishes 10-year product and battery-performance warranties, governed by current AlphaESS Australia terms and Australian Consumer Law. |
| Warranty remedy | Repair, replacement or equivalent hardware at GoodWe's option. | Repair or replacement at AlphaESS's option. |
| Labour and reinstallation | Service rebates are conditional and do not establish full labour cover. Removal and reinstallation are not an unconditional entitlement. | Installer travel and on-site labour are excluded. Removal and reinstallation are not promised. |
| Freight | Transport support is conditional and capped. | Replacement-parts freight is covered for an accepted claim. |
| Transfer and registration | No subsequent-owner transfer right was found in the governing terms. Authorised supply, installation and monitoring conditions apply. | Transfers automatically with the building while the system remains installed; ownership evidence may be required. Initial serial registration and eligible installation are required. |
| Grid compatibility | The exact single-phase platform publishes 220/230/240 V operation, whole-home 63 A bypass and sub-4 ms backup switching. | The exact S5 configuration is a 230 V single-phase hybrid system with 5 kVA backup and AS/NZS 4777.2 grid regulation; final DNSP 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 | GW8.3-BAT-D-G20 remains current on the CER battery export through 31 December 2027, and GW8K-EHA-G20 remains current on the inverter export through 25 July 2028. GoodWe Technologies Co., Ltd. provides the warranty and GoodWe Australia Pty Ltd is the local importer. | The exact 9.3 kWh battery module and supported stacks are current Australian approved-battery entries. |
| Sources | Source 1Source 2Source 3Source 4Source 5Source 6 | Source 1Source 2Source 3 |
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.
Define the usable energy, output power, backed-up circuits and outage behaviour. Confirm whether VPP participation, an internet connection, or an additional controller changes the configuration, reserve level, warranty or support path.
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 Performance & Value class, on the same rubric weighting. Scores are not comparable across classes or tiers. Full methodology.