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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

SG320HX-20320 kW

Sungrow | Current India-listed SG320-350HX-20 card; scored model SG320HX-20

Three-phaseString6 MPPTs

68/ 100

Very good

Strong evidence coverage · 100%

Evidence checked 2026-09-03

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
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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.

MeasureSG320HX-20SMILE-M-S Inverter
Efficiency86 / 100 (better value on this row)52 / 100
Design & Flexibility82 / 10096 / 100
Thermal & Physical Resilience76 / 10078 / 100
Features & Integration53 / 10080 / 100
Safety & Compliance70 / 10070 / 100
Guarantee & Backbone62 / 10054 / 100
Energy Ecosystem42 / 10040 / 100

Efficiency

SG320HX-20
86 / 100 (better value on this row)
SMILE-M-S Inverter
52 / 100

Design & Flexibility

SG320HX-20
82 / 100
SMILE-M-S Inverter
96 / 100

Thermal & Physical Resilience

SG320HX-20
76 / 100
SMILE-M-S Inverter
78 / 100

Features & Integration

SG320HX-20
53 / 100
SMILE-M-S Inverter
80 / 100

Safety & Compliance

SG320HX-20
70 / 100
SMILE-M-S Inverter
70 / 100

Guarantee & Backbone

SG320HX-20
62 / 100
SMILE-M-S Inverter
54 / 100

Energy Ecosystem

SG320HX-20
42 / 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.

MeasureSG320HX-20SMILE-M-S Inverter
ArchitectureSolar-only string inverterHybrid inverter
Published rated AC power range320 kW8–9.999 kW
Power320.0 kW9.999 kW
TypeStringHybrid
Peak eff99.02 % (better value on this row)97.47 %
MPPTs6 (better value on this row)4
Scored benchmarkNot stated9.999 kW

Architecture

SG320HX-20
Solar-only string inverter
SMILE-M-S Inverter
Hybrid inverter

Published rated AC power range

SG320HX-20
320 kW
SMILE-M-S Inverter
8–9.999 kW

Power

SG320HX-20
320.0 kW
SMILE-M-S Inverter
9.999 kW

Type

SG320HX-20
String
SMILE-M-S Inverter
Hybrid

Peak eff

SG320HX-20
99.02 % (better value on this row)
SMILE-M-S Inverter
97.47 %

MPPTs

SG320HX-20
6 (better value on this row)
SMILE-M-S Inverter
4

Scored benchmark

SG320HX-20
Not stated
SMILE-M-S Inverter
9.999 kW
Decision snapshot

Where the comparison separates

OverallThe products are tied at 68.
Strongest dimensionsSG320HX-20: Efficiency · SMILE-M-S Inverter: Design & Flexibility
Largest differenceSG320HX-20 has the largest pillar edge in Efficiency (34 points).
Evidence coverageSG320HX-20: 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.