The assessment
How it scores, by category
Market position
The data
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: SUN-BK250 · checked 2026-08-23. Evidence.
Sources & references · checked 2026-08-23
Strong evidence coverage
22 of 22 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.
How far the evidence reaches
- OutputManufacturer claim4 rows in the rings3 design facts beside the rings
- EnduranceManufacturer claim3 rows in the rings1 warranty term beside the rings
- SafetyManufacturer claim3 rows in the rings2 design facts beside the rings
- BackingManufacturer claim3 rows in the rings
- FitReviewed absence only3 rows in the rings
- FootprintNot assessed for plug-in storage
Rings, outside in: manufacturer claim, certified or regulator-listed, third-party source. The centre is review.solar's own measurement, empty for every product today. Warranty terms and design facts that rest on the maker's own word are counted beside the rings; a reviewed absence, or one that reaches beyond the maker's claim, stays in them. How the evidence puzzle works
Record revision. Deye SUN-BK250 exact product page, 11 March 2026 datasheet and current corporate record, rechecked 2026-08-23
- Sourced valuesData card →
- Warranty summary10-year product-warranty claim; detailed terms unpublished →
Show 3 more
- Archived copy of the primary sourcePDF ↗
- Usable energy / DoD (%)Manufacturer ↗
- Financial strength & warranty backingManufacturer ↗
Help strengthen this record
These are published evidence gaps, not private submissions. A source is reviewed under the same methodology whether it comes from a reader, installer or manufacturer.
- Cell balancing architectureNot stated in reviewed documentsThe public documents reviewed for this record do not state this value. A published or independent source is requested.Offer a source
- Warranty degradation guaranteeNot stated in reviewed documentsThe public documents reviewed for this record do not state this value. A published or independent source is requested.Offer a source
- Thermal & fire mitigationNot stated in reviewed documentsThe public documents reviewed for this record do not state this value. A published or independent source is requested.Offer a source
- Warranty assuranceNot stated in reviewed documentsThe public documents reviewed for this record do not state this value. A published or independent source is requested.Offer a source
Product record history
2 earlier entries recorded source rechecks rather than changes to the published figures, and are not listed here. Every entry remains in the evidence record.
38 changes to this record · 9 products changed in this update
Grid-injection power (kW): Evidence sources
- Before
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
Ingress protection (outdoor): Evidence sources
- Before
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
Thermal & fire mitigation: Evidence sources
- Before
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
VPP & grid services readiness
- Before
- VPP-capable, protocol ready
- After
- No VPP capability stated
Modularity & scalability: Evidence sources
- Before
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
Cell balancing architecture: Evidence sources
- Before
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
Smart home & IoT depth: Evidence sources
- Before
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
Backup switching speed: Evidence sources
- Before
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
Open protocol & API maturity
- Before
- Cloud API only
- After
- Proprietary / no documented API
Backup output power (kW): Evidence sources
- Before
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
VPP & grid services readiness: Evidence sources
- Before
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
Usable energy / DoD (%): Evidence sources
- Before
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
Source revision
- Before
- Not previously recorded
- After
- Deye SUN-BK250 exact product page, 11 March 2026 datasheet and current corporate record, rechecked 2026-08-23
Open protocol & API maturity: Evidence sources
- Before
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
AU Evidence sources
- Before
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyestore.com/en-au; https://www.deyestore.com/en-au/blogs/deye-smart-ct-unlock-the-new-solar-storage-system/balcony-solar-power-plant-the-2026-buyers-guide
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html; https://www.deyestore.com/en-au
Financial strength & warranty backing: Evidence sources
- Before
- After
- https://www.deyeinverter.com/about/; https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf
Open protocol & API maturity: Evidence status
- Before
- sourced
- After
- reviewed_absence
Warranty degradation guarantee: Evidence sources
- Before
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
Thermal & fire mitigation: Evidence status
- Before
- sourced
- After
- reviewed_absence
Cycle life (cycles to stated EOL): Evidence sources
- Before
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
Warranty assurance: Evidence status
- Before
- sourced
- After
- reviewed_absence
Smart home & IoT depth: Evidence status
- Before
- sourced
- After
- reviewed_absence
Operating temperature range: Evidence sources
- Before
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
Cell chemistry: Evidence sources
- Before
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
Warranty degradation guarantee: Evidence status
- Before
- sourced
- After
- reviewed_absence
Cell balancing architecture: Evidence status
- Before
- sourced
- After
- reviewed_absence
Self-heating capability: Evidence sources
- Before
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
Safety certification: Evidence sources
- Before
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
Manufacturing track record: Evidence sources
- Before
- After
- https://www.deyeinverter.com/about/; https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf
Manufacturing track record
- Before
- 10-15 years
- After
- 15+ years, field-proven
Financial strength & warranty backing
- Before
- Mid-tier private, no distress signals
- After
- Stable / listed
VPP & grid services readiness: Evidence status
- Before
- sourced
- After
- reviewed_absence
Energy density / footprint: Evidence sources
- Before
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
Warranty period (yrs): Evidence sources
- Before
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
Warranty assurance: Evidence sources
- Before
- After
- https://www.deyeinverter.com/deyeinverter/2026/03/11/%E3%80%90B%E3%80%91Datasheet_SUN-BK80-250-2.56KWH-EU-AM4-18-32L_20260311_en.pdf; https://www.deyeinverter.com/product/hybrid-ess/sunbk-80250-2-56kwheuam418l-32l.html
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
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Our reading
SUN-BK250 scores 70, placing 3 of 8 in the Plug-in ESS class against a class average of 64.1. Its strongest scoring dimension is capacity & usability (100), running 8.2 points above the class average on this dimension. Connectivity & Ecosystem scores 35, the lowest pillar for this product. The class average on connectivity & ecosystem is 49.
Dietreich Farquharson · review.solar