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

Market context

Global benchmark

Performance & Value

ESA G20

GoodWe

64/ 100

Good

Strong evidence coverage · 100%

Evidence checked 2026-07-31

LFP100% Usable5 kWh Modular
Full scorecard
Performance & Value

Smile G3 S5

AlphaESS

78/ 100

Superior

Moderate evidence coverage · 58%

Evidence checked 2026-07-16

LFPUL9540AVPP-Ready
Full scorecard
Side by side

Score profile

MeasureESA G20Smile G3 S5
Capacity & Usability100 / 10086 / 100
Power & Efficiency74 / 10080 / 100
Longevity (verified)60 / 10070 / 100
Safety & Chemistry71 / 10087 / 100
Guarantee & Backbone43 / 10078 / 100
Energy Ecosystem47 / 10067 / 100

Capacity & Usability

ESA G20
100 / 100
Smile G3 S5
86 / 100

Power & Efficiency

ESA G20
74 / 100
Smile G3 S5
80 / 100

Longevity (verified)

ESA G20
60 / 100
Smile G3 S5
70 / 100

Safety & Chemistry

ESA G20
71 / 100
Smile G3 S5
87 / 100

Guarantee & Backbone

ESA G20
43 / 100
Smile G3 S5
78 / 100

Energy Ecosystem

ESA G20
47 / 100
Smile G3 S5
67 / 100
Side by side

Key specifications

MeasureESA G20Smile G3 S5
Published usable capacity range5–48 kWh8.2–60.5 kWh
Scored benchmark8 kWh9.6 kWh
ChemistryLFPLFP
Power8.0 kW5 kW
Round-tripNot recorded95 %
Cycle lifeNot recorded10,000 cycles

Published usable capacity range

ESA G20
5–48 kWh
Smile G3 S5
8.2–60.5 kWh

Scored benchmark

ESA G20
8 kWh
Smile G3 S5
9.6 kWh

Chemistry

ESA G20
LFP
Smile G3 S5
LFP

Power

ESA G20
8.0 kW
Smile G3 S5
5 kW

Round-trip

ESA G20
Not recorded
Smile G3 S5
95 %

Cycle life

ESA G20
Not recorded
Smile G3 S5
10,000 cycles
Decision snapshot

Where the comparison separates

OverallSmile G3 S5 leads the global score by 14 points.
Strongest dimensionsESA G20: Capacity & Usability · Smile G3 S5: Safety & Chemistry
Largest differenceSmile G3 S5 has the largest pillar edge in Guarantee & Backbone (35 points).
Evidence coverageESA G20: strong evidence coverage (100%) · Smile G3 S5: moderate evidence coverage (58%)

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