Compare like with like. Aligned scores, specifications and local evidence within one scoring class or tier.
Market context
Global benchmark
GoodWe | Current Australian regulator-listed subset GW4000-SDT-20, GW5000-SDT-20 and GW6000-SDT-20; scored model GW6000-SDT-20
70/ 100
Strong evidence coverage · 100%
Evidence checked 2026-08-07
AlphaESS | SMILE-M8-S-INV, SMILE-M9-S-INV and SMILE-M10-S-INV; scored M10 at 9.999 kW local rating
68/ 100
Strong evidence coverage · 100%
Evidence checked 2026-09-01
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 | SDT G2 PLUS+ | 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 | SDT G2 PLUS+ | SMILE-M-S Inverter |
|---|---|---|
| Architecture | Solar-only string inverter | Hybrid inverter |
| Published rated AC power range | 4–6 kW | 8–9.999 kW |
| Scored benchmark | 6 kW | 9.999 kW |
| Power | 6.0 kW | 9.999 kW |
| Type | String | Hybrid |
| Peak eff | 98.2 % (better value on this row) | 97.47 % |
| MPPTs | 2 | 4 (better value on this row) |
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.