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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

SG20RT-P215–20 kW

Sungrow | Current India-listed SG15/17/20RT-P2 family; scored model SG20RT-P2

Three-phaseString2 MPPTs

68/ 100

Very good

Strong evidence coverage · 100%

Evidence checked 2026-09-03

AFCI Integrated
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.

MeasureSG20RT-P2SMILE-M-S Inverter
Efficiency71 / 100 (better value on this row)52 / 100
Design & Flexibility83 / 10096 / 100
Thermal & Physical Resilience71 / 10078 / 100
Features & Integration53 / 10080 / 100
Safety & Compliance95 / 10070 / 100
Guarantee & Backbone62 / 10054 / 100
Energy Ecosystem42 / 10040 / 100

Efficiency

SG20RT-P2
71 / 100 (better value on this row)
SMILE-M-S Inverter
52 / 100

Design & Flexibility

SG20RT-P2
83 / 100
SMILE-M-S Inverter
96 / 100

Thermal & Physical Resilience

SG20RT-P2
71 / 100
SMILE-M-S Inverter
78 / 100

Features & Integration

SG20RT-P2
53 / 100
SMILE-M-S Inverter
80 / 100

Safety & Compliance

SG20RT-P2
95 / 100
SMILE-M-S Inverter
70 / 100

Guarantee & Backbone

SG20RT-P2
62 / 100
SMILE-M-S Inverter
54 / 100

Energy Ecosystem

SG20RT-P2
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.

MeasureSG20RT-P2SMILE-M-S Inverter
ArchitectureSolar-only string inverterHybrid inverter
Published rated AC power range15–20 kW8–9.999 kW
Scored benchmark20 kW9.999 kW
Power20.0 kW9.999 kW
TypeStringHybrid
Peak eff98.3 % (better value on this row)97.47 %
MPPTs24 (better value on this row)

Architecture

SG20RT-P2
Solar-only string inverter
SMILE-M-S Inverter
Hybrid inverter

Published rated AC power range

SG20RT-P2
15–20 kW
SMILE-M-S Inverter
8–9.999 kW

Scored benchmark

SG20RT-P2
20 kW
SMILE-M-S Inverter
9.999 kW

Power

SG20RT-P2
20.0 kW
SMILE-M-S Inverter
9.999 kW

Type

SG20RT-P2
String
SMILE-M-S Inverter
Hybrid

Peak eff

SG20RT-P2
98.3 % (better value on this row)
SMILE-M-S Inverter
97.47 %

MPPTs

SG20RT-P2
2
SMILE-M-S Inverter
4 (better value on this row)
Decision snapshot

Where the comparison separates

OverallThe products are tied at 68.
Strongest dimensionsSG20RT-P2: Safety & Compliance · SMILE-M-S Inverter: Design & Flexibility
Largest differenceSMILE-M-S Inverter has the largest pillar edge in Features & Integration (27 points).
Evidence coverageSG20RT-P2: 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.