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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

EverVolt HK2

Panasonic

73/ 100

Very good

Limited evidence coverage · 33%

Evidence checked 2026-07-16

Heterojunction (HJT)Class-Leading Temp Coeff15+ Yrs Field-ProvenFinancial note
Full scorecard
Premium Performance

Comet 1N

AIKO

76/ 100

Superior

Strong evidence coverage · 69%

Evidence checked 2026-06-16

Back-Contact CellClass-Leading Temp Coeff15+ Yrs Field-ProvenPVEL Top Performer
Full scorecard
Side by side

Score profile

MeasureEverVolt HK2Comet 1N
Architecture & Design78 / 10086 / 100
Efficiency & Yield62 / 10076 / 100
Durability (verified)60 / 10074 / 100
Performance & Degradation86 / 10078 / 100
Guarantee & Backbone81 / 10064 / 100
Sustainability72 / 10080 / 100

Architecture & Design

EverVolt HK2
78 / 100
Comet 1N
86 / 100

Efficiency & Yield

EverVolt HK2
62 / 100
Comet 1N
76 / 100

Durability (verified)

EverVolt HK2
60 / 100
Comet 1N
74 / 100

Performance & Degradation

EverVolt HK2
86 / 100
Comet 1N
78 / 100

Guarantee & Backbone

EverVolt HK2
81 / 100
Comet 1N
64 / 100

Sustainability

EverVolt HK2
72 / 100
Comet 1N
80 / 100
Side by side

Key specifications

MeasureEverVolt HK2Comet 1N
Published rated power range420–430 W590–615 W
Scored benchmark430 W615 W
Power430 W615 W
Efficiency22.2 %23.8 %
CellHeterojunctionBack-contact
Temp coeff-0.24 %/°C-0.26 %/°C

Published rated power range

EverVolt HK2
420–430 W
Comet 1N
590–615 W

Scored benchmark

EverVolt HK2
430 W
Comet 1N
615 W

Power

EverVolt HK2
430 W
Comet 1N
615 W

Efficiency

EverVolt HK2
22.2 %
Comet 1N
23.8 %

Cell

EverVolt HK2
Heterojunction
Comet 1N
Back-contact

Temp coeff

EverVolt HK2
-0.24 %/°C
Comet 1N
-0.26 %/°C
Decision snapshot

Where the comparison separates

OverallComet 1N leads the global score by 3 points.
Strongest dimensionsEverVolt HK2: Performance & Degradation · Comet 1N: Architecture & Design
Largest differenceEverVolt HK2 has the largest pillar edge in Guarantee & Backbone (17 points).
Evidence coverageEverVolt HK2: limited evidence coverage (33%) · Comet 1N: strong evidence coverage (69%)

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.