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Compare like with like. Aligned scores, specifications and local evidence within one scoring class or tier.

Market context

Global benchmark

Inverter

S6 Three-phase LV Hybrid8–15 kW

Solis | S6-EH3P8K02-NV-YD-L-AU / S6-EH3P9.9K02-NV-YD-L-AU / S6-EH3P10K02-NV-YD-L-AU / S6-EH3P12K02-NV-YD-L-AU / S6-EH3P15K02-NV-YD-L-AU; scored model S6-EH3P15K02-NV-YD-L-AU

Three-phaseHybridEssential-load backup2 MPPTs

72/ 100

Very good

Strong evidence coverage · 100%

Evidence checked 2026-09-01

IP66 Rated
Full scorecard
Inverter

SMILE-M-S Inverter8–9.999 kW

AlphaESS | SMILE-M8-S-INV, SMILE-M9-S-INV and SMILE-M10-S-INV; scored M10 at 9.999 kW local rating

Single-phaseHybridEssential-load backup4 MPPTs

68/ 100

Very good

Strong evidence coverage · 100%

Evidence checked 2026-09-01

Fanless Design
Full scorecard
Side by side

Score profile

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.

MeasureS6 Three-phase LV HybridSMILE-M-S Inverter
Efficiency56 / 100 (better value on this row)52 / 100
Design & Flexibility88 / 10096 / 100
Thermal & Physical Resilience81 / 10078 / 100
Features & Integration84 / 10080 / 100
Safety & Compliance78 / 10070 / 100
Guarantee & Backbone72 / 10054 / 100
Energy Ecosystem43 / 10040 / 100

Efficiency

S6 Three-phase LV Hybrid
56 / 100 (better value on this row)
SMILE-M-S Inverter
52 / 100

Design & Flexibility

S6 Three-phase LV Hybrid
88 / 100
SMILE-M-S Inverter
96 / 100

Thermal & Physical Resilience

S6 Three-phase LV Hybrid
81 / 100
SMILE-M-S Inverter
78 / 100

Features & Integration

S6 Three-phase LV Hybrid
84 / 100
SMILE-M-S Inverter
80 / 100

Safety & Compliance

S6 Three-phase LV Hybrid
78 / 100
SMILE-M-S Inverter
70 / 100

Guarantee & Backbone

S6 Three-phase LV Hybrid
72 / 100
SMILE-M-S Inverter
54 / 100

Energy Ecosystem

S6 Three-phase LV Hybrid
43 / 100
SMILE-M-S Inverter
40 / 100
Side by side

Key specifications

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.

MeasureS6 Three-phase LV HybridSMILE-M-S Inverter
ArchitectureHybrid inverterHybrid inverter
Published rated AC power range8–15 kW8–9.999 kW
Scored benchmark15 kW9.999 kW
Power15.0 kW9.999 kW
TypeHybridHybrid
Peak eff97.5 % (better value on this row)97.47 %
MPPTs24 (better value on this row)

Architecture

S6 Three-phase LV Hybrid
Hybrid inverter
SMILE-M-S Inverter
Hybrid inverter

Published rated AC power range

S6 Three-phase LV Hybrid
8–15 kW
SMILE-M-S Inverter
8–9.999 kW

Scored benchmark

S6 Three-phase LV Hybrid
15 kW
SMILE-M-S Inverter
9.999 kW

Power

S6 Three-phase LV Hybrid
15.0 kW
SMILE-M-S Inverter
9.999 kW

Type

S6 Three-phase LV Hybrid
Hybrid
SMILE-M-S Inverter
Hybrid

Peak eff

S6 Three-phase LV Hybrid
97.5 % (better value on this row)
SMILE-M-S Inverter
97.47 %

MPPTs

S6 Three-phase LV Hybrid
2
SMILE-M-S Inverter
4 (better value on this row)
Decision snapshot

Where the comparison separates

OverallS6 Three-phase LV Hybrid leads the global score by 4 points.
Strongest dimensionsS6 Three-phase LV Hybrid: Design & Flexibility · SMILE-M-S Inverter: Design & Flexibility
Largest differenceS6 Three-phase LV Hybrid has the largest pillar edge in Guarantee & Backbone (18 points).
Evidence coverageS6 Three-phase LV Hybrid: strong evidence coverage (100%) · SMILE-M-S Inverter: strong evidence coverage (100%)

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.