The assessment
How it scores, by category
Market position
The data
DC-coupled battery
Stores DC energy and relies on system power electronics outside the battery product for household AC.
- Product role
- The published battery record covers the storage stack, controller and stated capacity range.
- Published range
- 13.5 kWh
- Phase
- Not recorded
- Backup boundary
- Installation-specific
What the documents establish
Published evidence, source-reviewed non-disclosure and unresolved questions remain separate from the product score.
Capacity guarantee: minimum retained at year 10
No year-by-year capacity schedule is published for this product - the manufacturer guarantees only this end-of-term minimum, not a specific decline curve. 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. The reference scores one Expansion unit. Larger installed configurations do not receive a capacity-size advantage. Scored model: Powerwall 3 Expansion 1807000-xx-y · checked 2026-08-26. Evidence.
Sources & references · checked 2026-08-26
Strong evidence coverage
20 of 20 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.
Record revision. Powerwall 3 Expansion Australian specification, AU/NZ warranty Rev 1.16 effective 2026-05-06 and current regulator configurations checked 2026-08-26
- Sourced valuesData card →
- Warranty summary10-year product warranty →
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- Financial strength & warranty backingManufacturer ↗
- Manufacturing track recordManufacturer ↗
- VPP & grid services readinessManufacturer ↗
- Firmware & security disclosureManufacturer ↗
- Warranty transferabilityManufacturer ↗
Product record history
Product record
kind: battery; brand: Tesla; name: Powerwall 3 Expansion; model: Powerwall 3 Expansion part 1807000-xx-y; 13.5 kWh reference unit; score: 57.9
Primary datasheet
This is review.solar's publication history. It does not claim the product changed on the recorded date, and it excludes compatibility, system pairing, installation suitability and relative leaderboard prose. Open the complete JSON record.
Evidence timeline
Recorded verification events for this scorecard. These are evidence checks, not historical score snapshots.
- Core scorecard evidence checked
- AU market evidence checked
- Series benchmark evidence checked
- Plain-language warranty summary checked
Scored by Solar Analytica Research
Further reading from Findings
Stay across the benchmark.
New scorecards, score changes and market signals, published as they happen.
Our reading
Powerwall 3 Expansion scores 58, placing 12 of 13 in the Premium Integrated class against a class average of 64.9. Its strongest scoring dimension is guarantee & backbone (72), running 12.0 points above the class average on this dimension. Energy Ecosystem scores 38, the lowest pillar for this product. The class average on energy ecosystem is 51. Key specifications: Other / unspecified.