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

Market context

Global benchmark

Premium Performance

Stellar 1N+66 Dual-Glass645–660 W

AIKO | AIKO-A645-GRH66Dw through AIKO-A660-GRH66Dw (132 half-cells, N-type ABC rear-contact, bifacial dual glass); scored model AIKO-A660-GRH66Dw

66-cellBifacialDual-glass

68/ 100

Very good

Strong evidence coverage · 100%

Evidence checked 2026-08-21

24.4% EfficiencyClass-Leading Temp CoeffBifacialGlass-Glass
Full scorecard
Premium Performance

Comet 1N590–615 W

AIKO | AIKO-A615-MAH72Mw

72-cellMono-glassABCRear contact

73/ 100

Very good

Strong evidence coverage · 81%

Evidence checked 2026-08-20

Back-Contact CellClass-Leading Temp Coeff15+ Yrs Field-ProvenInsured Warranty
Full scorecard
Side by side

Score profile

MeasureStellar 1N+66 Dual-GlassComet 1N
Architecture & Design94 / 10088 / 100
Efficiency & Yield75 / 10066 / 100
Durability (verified)52 / 10066 / 100
Performance & Degradation78 / 10078 / 100
Guarantee & Backbone44 / 10064 / 100
Sustainability46 / 10080 / 100

Architecture & Design

Stellar 1N+66 Dual-Glass
94 / 100
Comet 1N
88 / 100

Efficiency & Yield

Stellar 1N+66 Dual-Glass
75 / 100
Comet 1N
66 / 100

Durability (verified)

Stellar 1N+66 Dual-Glass
52 / 100
Comet 1N
66 / 100

Performance & Degradation

Stellar 1N+66 Dual-Glass
78 / 100
Comet 1N
78 / 100

Guarantee & Backbone

Stellar 1N+66 Dual-Glass
44 / 100
Comet 1N
64 / 100

Sustainability

Stellar 1N+66 Dual-Glass
46 / 100
Comet 1N
80 / 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.

MeasureStellar 1N+66 Dual-GlassComet 1N
ArchitectureSolar moduleABC module
Published rated power range645–660 W590–615 W
Scored benchmark660 W615 W
Power660 W615 W
Efficiency24.4 % (better value on this row)23.8 %
CellN-type ABCN-type ABC silicon
Temp coeff-0.26 %/°C-0.26 %/°C

Architecture

Stellar 1N+66 Dual-Glass
Solar module
Comet 1N
ABC module

Published rated power range

Stellar 1N+66 Dual-Glass
645–660 W
Comet 1N
590–615 W

Scored benchmark

Stellar 1N+66 Dual-Glass
660 W
Comet 1N
615 W

Power

Stellar 1N+66 Dual-Glass
660 W
Comet 1N
615 W

Efficiency

Stellar 1N+66 Dual-Glass
24.4 % (better value on this row)
Comet 1N
23.8 %

Cell

Stellar 1N+66 Dual-Glass
N-type ABC
Comet 1N
N-type ABC silicon

Temp coeff

Stellar 1N+66 Dual-Glass
-0.26 %/°C
Comet 1N
-0.26 %/°C
Decision snapshot

Where the comparison separates

OverallComet 1N leads the global score by 5 points.
Strongest dimensionsStellar 1N+66 Dual-Glass: Architecture & Design · Comet 1N: Architecture & Design
Largest differenceComet 1N has the largest pillar edge in Sustainability (34 points).
Evidence coverageStellar 1N+66 Dual-Glass: strong evidence coverage (100%) · Comet 1N: strong evidence coverage (81%)

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 Premium Performance class, on the same rubric weighting. Scores are not comparable across classes or tiers. Full methodology.