The assessment
How it scores, by category
Market position
The data
All-in-one energy system
Presents storage and power conversion as one integrated product or product platform.
- Product role
- Battery modules, inverter functions and controls are packaged as one purchasing architecture.
- Published range
- 13.5 kWh
- Phase
- Single phase
- Backup boundary
- Installation-specific
What the documents establish
Published evidence, source-reviewed non-disclosure and unresolved questions remain separate from the product score.
Usable capacity
100% of this battery’s nominal capacity is usable, 13.5 kWh in the scored configuration.13.5 kWh usableScored configuration: Powerwall 3.
No reserve is withheld at the stated depth of discharge.
At a sourced 100% depth of discharge the usable and nominal figures are the same number, so no separate nominal capacity is stated.
Usable capacity sourceDepth-of-discharge sourceCapacity guarantee: minimum retained at year 10
The manufacturer publishes two guaranteed checkpoints - 80.0% at year 5 and 70.0% at year 10 - not a full year-by-year schedule. Capacity figure based on the sourced usable capacity of the base configuration; modular systems scale with additional modules.
Verification & sources
Market context
Global evidencechange in the site menu
Global benchmark. This scorecard is benchmarked globally. A global score does not imply local availability, certification, warranty coverage, or installer compatibility.
Benchmark anchor. Scored model: Powerwall 3 · checked 2026-06-16. Evidence.
Australian warranty decision
1 product record
Read the Australian warranty as a claim pathway: the headline term is separate from remedy, labour, freight, site work, transfer and registration conditions.
Tesla Powerwall 3 13.5 kWh · Home battery
Australian evidence checked 2026-08-07.
Covered8 sources
Australian warranty scope: Australia and New Zealand; Tesla Motors Netherlands B.V. provides ten years and 70% of 13.5 kWh for solar self-consumption, time-based control and backup with unlimited cycles. Other or mixed applications are capped at 37.8 MWh measured at the battery AC output.
Structured claim terms: Recorded.
- Term
- 10 yr productStated in the structured comparison
- Product remedy
- CoveredRepair, equivalent replacement or market-price refund at Tesla's option.
- Labour
- CoveredThe voluntary warranty does not promise a general labour reimbursement entitlement.
- Freight
- ConditionalAn RMA is required and no unconditional owner freight reimbursement is stated.
- Removal and reinstallation
- Not statedRemoval and reinstallation costs are not expressly promised; relocation requires Tesla's written consent.
- Transferability
- ConditionalA subsequent owner may claim with proof of ownership; unapproved relocation from the original site can void cover.
- Registration and conditions
- ConditionalRegistration and extended internet connectivity are required for the full term; cover may reduce to at least four years if they are not maintained.
Sources & references · checked 2026-08-07
Strong evidence coverage
28 of 28 scored criteria link directly to a published source.
Values marked estimated, derived, or not found remain visible on the audit sheet and do not carry the same evidential weight as a linked source. Coverage measures direct links, not an independent guarantee that a claim is correct.
- Sourced valuesData card →
- Warranty summary10-year product warranty →
Show 15 more
- Usable energy / DoD (%)Manufacturer ↗
- Round-trip efficiency (%)Manufacturer ↗
- Continuous power output (kW)Manufacturer ↗
- Backup switching speedManufacturer ↗
- Safety certificationManufacturer ↗
- Financial strength & warranty backingManufacturer ↗
- Open protocol & API maturityManufacturer ↗
- Open protocol & API maturityManufacturer ↗
- VPP & grid services readinessManufacturer ↗
- Thermal load managementManufacturer ↗
- Verified reliabilityManufacturer ↗
- Manufacturing track recordManufacturer ↗
- Cell balancing architectureManufacturer ↗
- EV charging integrationManufacturer ↗
- Firmware & security disclosureManufacturer ↗
Evidence timeline
Recorded verification events for this scorecard. These are evidence checks, not historical score snapshots.
- Core scorecard evidence checked
- AU market evidence checked
- Plain-language warranty summary checked
- US market evidence checked
- US safety notice state checked: not_affected
- Series benchmark evidence checked
Scored by Solar Analytica Research
Further reading from Signals
Stay across the benchmark.
New scorecards, score changes and market signals, published as they happen.
Our reading
Powerwall 3 scores 74, placing 2 of 11 in the Premium Integrated class and within 0.7 points of the class leader. Its strongest scoring dimension is capacity & usability (96), running 16.8 points above the class average on this dimension. Longevity (verified) scores 61, the lowest pillar for this product. The class average on longevity (verified) is 67. Key specifications: LFP, 89% round-trip efficiency, 11.04 kW continuous output.