The assessment
How it scores, by category
Market position
The data
Solar-only string inverter
Converts PV string DC into grid-connected AC.
- Product role
- No native battery conversion path is recorded for the product.
- Published range
- 5–12 kW
- Phase
- Three phase
- Backup boundary
- No native backup recorded
What the documents establish
Published evidence, source-reviewed non-disclosure and unresolved questions remain separate from the product score.
Warranty coverage: 10-year term
Coverage includes
Parts, labour & extendable · term longer than 24 of 93 scored inverters
No inverter in the fleet publishes a year-by-year performance or output guarantee the way panels and batteries do - this shows the covered term against the market-typical term and where every scored inverter’s term lands (grey dots, sized by model count), plus what the warranty actually includes.
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 score is anchored to the highest published output in this exact electrical and regional series. Scored model: SG12RT · checked 2026-07-31. Evidence.
Sources & references · checked 2026-08-31
Strong evidence coverage
17 of 17 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. DS_20220516 SG5.0 / 6.0 / 7.0 / 8.0 / 10 / 12RT V17 EN. First-market DE overlay review 2026-08-31: official German catalogues recorded for the remaining 17 AU+US identities; Australian and United States overlays and scores unchanged.
- Sourced valuesData card →
- Warranty summary10-year product warranty →
Show 3 more
- Archived copy of the primary sourcePDF ↗
- Warranty period (yrs)Warranty ↗
- Warranty assuranceWarranty ↗
Product record history
8 changes to this record · 61 products changed in this update
DE Warranty conditions
- Before
- Not previously recorded
- After
- labour: Removal, installation and reinstallation labour are excluded unless a separate written service arrangement applies.; registration: Proof of purchase, product identity and performance data requested for diagnosis remain claim conditions.; remedy: Sungrow may repair or replace an accepted defective product under the governing terms.; removal reinstallation: Removal and reinstallation are not unconditionally covered.; transferability: Transfer at the same installation site requires Sungrow's agreement under the reviewed German terms.; transport: The claimant pays freight to Sungrow; Sungrow pays delivery of the repaired or replacement product under the reviewed terms.
DE Warranty scope
- Before
- Not previously recorded
- After
- Germany; Sungrow's German service factsheet publishes ten years for inverters up to 20 kW, which includes SG12RT. The governing German warranty terms remain controlling. SG15RT, SG20RT, SG RS and SG110CX are not transferred onto this SG12RT record.
DE Status
- Before
- Not previously recorded
- After
- available
DE Support Note
- Before
- Not previously recorded
- After
- The same German Service Factsheet V2.0 already used for the SG RS family covers this inverter band. SG15RT and SG20RT stay outside this record. Manufacturer listing is established; distributor inventory is not inferred.
Source revision
- Before
- DS_20220516 SG5.0 / 6.0 / 7.0 / 8.0 / 10 / 12RT V17 EN
- After
- DS_20220516 SG5.0 / 6.0 / 7.0 / 8.0 / 10 / 12RT V17 EN. First-market DE overlay review 2026-08-31: official German catalogues recorded for the remaining 17 AU+US identities; Australian and United States overlays and scores unchanged.
DE Grid and installation context
- Before
- Not previously recorded
- After
- Sungrow Germany lists SG5.0RT through SG12RT on the German string-inverter page. Grid codes are not copied from SG15RT, SG20RT, SG RS or SG110CX. Site approval remains installation-specific.
DE Evidence sources
- Before
- Not previously recorded
- After
- https://ger.sungrowpower.com/upload/file/20230818/DE_Service_Factsheet_V2.0.pdf; https://www.sungrowpower.com/de/de/products/string-inverter/b-sg5-0/6-0/8-0/10/12rt-sg15/20rt; https://www.sungrowpower.com/de/de/warranty-terms-and-conditionsdetail-global-site
DE Certifications
- Before
- Not previously recorded
- After
- Sungrow's German product page names SG5.0RT through SG12RT including the scored SG12RT bin.
4 changes to this record · 73 products changed in this update
Value
- Before
- Not previously recorded
- After
- Direct-pv string inverter with 2 independent MPPTs at the scored model boundary.
Evidence sources
- Before
- Not previously recorded
- After
- https://info-support.sungrowpower.com/application/pdf/2022/05/16/DS_20220516_SG5.0_6.0_7.0_8.0_10_12RT_Datasheet_V17_EN.pdf
Confidence
- Before
- Not previously recorded
- After
- high
State
- Before
- Not previously recorded
- After
- supported
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
- DE market evidence checked
- US market evidence checked
- AU market evidence checked
- Plain-language warranty summary checked
- Series benchmark evidence 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
SG RT scores 71, placing 14 of 25 in the Value & Volume class against a class average of 72.1. Its strongest scoring dimension is safety & compliance (95), running 11.8 points above the class average on this dimension. Energy Ecosystem scores 40, the lowest pillar for this product. The class average on energy ecosystem is 49. Key specifications: 98.5% peak efficiency, 2 MPPT inputs, 10-year warranty.