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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 Integrated

Powerwall 3 Expansion13.5 kWh

Tesla | Powerwall 3 Expansion part 1807000-xx-y; 13.5 kWh reference unit

DC-coupledChemistry not disclosed

58/ 100

Good

Strong evidence coverage · 100%

Evidence checked 2026-08-26

Full scorecard
Premium Integrated

Ocean 25.02–60 kWh

EcoFlow | EcoFlow OCEAN 2 three-phase with EF BD-5-S2; 5.02 kWh scored reference, expandable in 5.02 kWh modules

LFPAll-in-oneThree-phase

62/ 100

Good

Strong evidence coverage · 100%

Evidence checked 2026-08-23

LFP15yr WarrantyVPP-Ready5 kWh Modular
Full scorecard
Side by side

Score profile

MeasurePowerwall 3 ExpansionOcean 2
Capacity & Usability60 / 10070 / 100
Power & Efficiency52 / 10053 / 100
Longevity (verified)61 / 10061 / 100
Safety & Chemistry63 / 10088 / 100
Guarantee & Backbone72 / 10050 / 100
Energy Ecosystem38 / 10044 / 100

Capacity & Usability

Powerwall 3 Expansion
60 / 100
Ocean 2
70 / 100

Power & Efficiency

Powerwall 3 Expansion
52 / 100
Ocean 2
53 / 100

Longevity (verified)

Powerwall 3 Expansion
61 / 100
Ocean 2
61 / 100

Safety & Chemistry

Powerwall 3 Expansion
63 / 100
Ocean 2
88 / 100

Guarantee & Backbone

Powerwall 3 Expansion
72 / 100
Ocean 2
50 / 100

Energy Ecosystem

Powerwall 3 Expansion
38 / 100
Ocean 2
44 / 100
Side by side

Key specifications

MeasurePowerwall 3 ExpansionOcean 2
ArchitectureDC-coupled batteryAll-in-one energy system
Published nominal capacity range13.5 kWhNot stated
ChemistryOtherLFP
PowerNot recorded3.4 kW
Round-tripNot recordedNot recorded
Cycle lifeNot recordedNot recorded
Published nominal battery capacity rangeNot stated5.02–60 kWh
Scored benchmarkNot stated5.02 kWh

Architecture

Powerwall 3 Expansion
DC-coupled battery
Ocean 2
All-in-one energy system

Published nominal capacity range

Powerwall 3 Expansion
13.5 kWh
Ocean 2
Not stated

Chemistry

Powerwall 3 Expansion
Other
Ocean 2
LFP

Power

Powerwall 3 Expansion
Not recorded
Ocean 2
3.4 kW

Round-trip

Powerwall 3 Expansion
Not recorded
Ocean 2
Not recorded

Cycle life

Powerwall 3 Expansion
Not recorded
Ocean 2
Not recorded

Published nominal battery capacity range

Powerwall 3 Expansion
Not stated
Ocean 2
5.02–60 kWh

Scored benchmark

Powerwall 3 Expansion
Not stated
Ocean 2
5.02 kWh
Decision snapshot

Where the comparison separates

OverallOcean 2 leads the global score by 4 points.
Strongest dimensionsPowerwall 3 Expansion: Guarantee & Backbone · Ocean 2: Safety & Chemistry
Largest differenceOcean 2 has the largest pillar edge in Safety & Chemistry (25 points).
Evidence coveragePowerwall 3 Expansion: strong evidence coverage (100%) · Ocean 2: 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 Premium Integrated class, on the same rubric weighting. Scores are not comparable across classes or tiers. Full methodology.