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PLACEHOLDERNot a representation of the product
Inverter

15K-2P

15 kW · Hybrid · 208/240 V · 3 MPPTs · Whole-home backup

Sol-ArkReleased 2022

73/ 100

Very good

Global

VPP-ReadyWhole-Home Backup

The verdict. In our Inverter class, Sol-Ark 15K-2P leads on features & integration.

17thof 63 in InverterTop halfclass average 70.5
Compare this inverter →Ask Watt →
Backup ratings depend on voltage and duration. At 240 V, the 15K-2P-LV specifies 12 kW continuous backup, 13 kW for 30 minutes and 24 kW for 10 seconds. At 208 V, the corresponding ratings are 10.4 kW, 11.26 kW and 20.8 kW. The 13 kW headline is a timed overload rating. Using only one battery input derates output; battery capability and installation also constrain delivery. These output ratings do not make every household load supportable. Optional RGM/EMP variants remain separate, and the newer datasheet does not establish semiconductor material or a hardware-equivalence join for revised component ratings. Source 1.Source 2.

The assessment

How it scores, by category

Efficiency58
Design & Flexibility89
Thermal & Physical Resilience76
Features & Integration91
Safety & Compliance65
Guarantee & Backbone68
Energy Ecosystem64

Market position

17thof 63 in InverterTop half
567382

Our reading

15K-2P scores 73, placing 17 of 63 in the Inverter class against a class average of 70.5. Its strongest scoring dimension is features & integration (91), running 18.2 points above the class average on this dimension. Efficiency scores 58, the lowest pillar for this product. The class average on efficiency is 69. Key specifications: 97.5% peak efficiency, 3 MPPT inputs, 10-year warranty.

Dietreich Farquharson · review.solar

The data

Power
Not recorded
Type
Hybrid
Peak eff
97.5%
MPPTs
3
Technology architecture

Hybrid inverter

Architecture guide

Manages PV, battery DC and household AC through the inverter platform.

Product role
The battery remains a separate product even when it belongs to the same branded platform.
Published range
15 kW
Phase
Not recorded
Backup boundary
Whole-home capability recorded
Architecture describes the product boundary. It is not a system design or an equipment-pairing decision.

Warranty coverage: 10-year term

Coverage includes

✓Parts
–Labour
–Extendable
Market typical10yr0yr5yr10yr15yr20yr25yr

Parts only · term longer than 24 of 95 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.

Before you buy
Local positionUse a market view to check local availability, approvals and warranty scope.
Ask the installerWill the exact 15K-2P model satisfy the site phase, array, MPPT, export-control and local grid requirements?

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. One product with four published names; the California Energy Commission and UL listing name is Limitless 15K-LV. Scored model: 15K-2P-LV · checked 2026-08-04. Evidence.

Sources & references · checked 2026-09-01

Strong evidence coverage

27 of 27 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

2 of 5 questions with rows in the rings reach beyond manufacturer claim; none is measured by review.solar.123456
  1. OutputCertified or regulator-listed1 of 4 rows in the rings beyond claim
  2. EnduranceManufacturer claim2 rows in the rings2 design facts beside the rings
  3. SafetyCertified or regulator-listed1 of 2 rows in the rings beyond claim
  4. BackingManufacturer claim2 rows in the rings2 warranty terms beside the rings
  5. FitManufacturer claim4 rows in the rings9 design facts beside the rings
  6. FootprintNot assessed for inverters

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. Current datasheet PS-00001 Rev8 (copyright2026; maker locator10September2026, no separate printed effective date); prior datasheet Rev7/16July2026 remains historical evidence. Bounded6October2026 citation integration confirms efficiency,MPPT/PV sizing,current,cooling,enclosure,temperature,battery-interface and power-factor fields plus backup voltage/duration explanation without changing scored values. Installation manual MA-0007 Rev13 effective16July2026 and warranty SK150-0045-002 Rev2 retained. Market and full-record verification dates unchanged.

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.

View the open evidence register
Change ledger

Product record history

4 changes to this record · 5 products changed in this update
  1. Record updated

    US Evidence sources

    Before
    https://sol-ark.com/residential-energy-solutions/whole-home-15k-2p-hybrid-inverter/; https://sol-ark.com/resources/product-document-library/; https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf; https://sol-ark.com/wp-content/uploads/2024/06/SK150-0045-002-15K-2P-N-EN-Warranty-1.pdf; https://sol-ark.com/wp-content/uploads/2026/07/15K_Installation_Manual_Rev_13_16July2026.pdf
    After
    https://sol-ark.com/; https://sol-ark.com/residential-energy-solutions/whole-home-15k-2p-hybrid-inverter/; https://sol-ark.com/resources/product-document-library/; https://sol-ark.com/sales-terms-and-conditions/; https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf; https://sol-ark.com/wp-content/uploads/2024/06/SGS_Certificate_SGSNA_22_GZ_00049X_15K_Jan2026.pdf; https://sol-ark.com/wp-content/uploads/2024/06/SK150-0045-002-15K-2P-N-EN-Warranty-1.pdf; https://sol-ark.com/wp-content/uploads/2026/07/15K_Installation_Manual_Rev_13_16July2026.pdf; https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf; https://solarequipment.energy.ca.gov/Home/InverterBatteryList?ManufacturerID=Sol-Ark; https://solarequipment.energy.ca.gov/Home/InverterSolarList?ManufacturerID=Sol-Ark; https://solarequipment.energy.ca.gov/Home/InvertersList?ManufacturerID=Sol-Ark
    US market evidenceUS market evidence+10 in JSON record
  2. Record updated

    US Warranty conditions

    Current text
    labour: Installation costs are excluded, and Sol-Ark does not warrant or guarantee workmanship performed by any person or firm installing its products.; registration: A signed installation verification checklist is required for full coverage, and Sol-Ark's Sales Terms and Conditions, not the model's limited warranty, state that purchases made through non-authorized sales or marketing channels are not covered by any warranty.; remedy: The limited warranty provides repair or replacement for covered defects; the published standard term does not promise a cash remedy.; removal reinstallation: Removal and reinstallation costs are excluded.; transferability: Transfers to a successor owner only while the inverter remains at its original use location.; transport: The owner bears return shipping costs.

    The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.

    US market evidenceUS market evidence+10 in JSON record
  3. Record updated

    US Warranty scope

    Current text
    United States; a ten-year limited warranty against defects in materials and workmanship, with the LCD screen and fans covered for five years. Installation, removal and reinstallation costs are excluded. Cover transfers only while the unit remains at the original use location, a signed installation verification checklist is required to secure full coverage, and Sol-Ark's Sales Terms and Conditions, not the model's limited warranty, state that purchases made through non-authorized sales or marketing channels are not covered by any warranty, which matters because grey-market units of the contract manufacturer's own brand have circulated in the United States. A 15-year extended warranty is sold through distributors without a Sol-Ark-published document.

    The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.

    US market evidenceUS market evidence+10 in JSON record
  4. Record updated

    US Support Note

    Current text
    Sol-Ark, LLC of 805 S. Central Expressway, Allen, TX 75013, telephone 972-575-8875, seven days a week, with an authorized installer map and named distributors. Sol-Ark states on its website that it is American-owned and controlled and that its inverters are manufactured in Allen, Texas from US and imported materials; that claim appears on the website only, not on this product's datasheet, manual, warranty or certificate, and Sol-Ark's own legal releases confirm an unnamed contract manufacturer while its UL certification was run under an SGS Guangzhou project number. The publication records both facts and asserts neither origin.

    The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.

    US market evidenceUS market evidence+10 in JSON record
27 changes to this record · 1 product changed in this update
  1. Record updated

    Weighted efficiency (CEC/Euro %): Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf
    After
    https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Weighted efficiency (CEC/Euro %)
  2. Record updated

    Thermal load management: Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf; https://sol-ark.com/wp-content/uploads/2026/07/15K_Installation_Manual_Rev_13_16July2026.pdf
    After
    https://sol-ark.com/wp-content/uploads/2026/07/15K_Installation_Manual_Rev_13_16July2026.pdf; https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Thermal load managementThermal load management
  3. Record updated

    Operating temperature range: Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf
    After
    https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Operating temperature range
  4. Record updated

    Warranty assurance: Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf; https://sol-ark.com/wp-content/uploads/2024/06/SK150-0045-002-15K-2P-N-EN-Warranty-1.pdf
    After
    https://sol-ark.com/wp-content/uploads/2024/06/SK150-0045-002-15K-2P-N-EN-Warranty-1.pdf; https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Warranty assuranceWarranty assurance
  5. Record updated

    Warranty period (yrs): Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf; https://sol-ark.com/wp-content/uploads/2024/06/SK150-0045-002-15K-2P-N-EN-Warranty-1.pdf
    After
    https://sol-ark.com/wp-content/uploads/2024/06/SK150-0045-002-15K-2P-N-EN-Warranty-1.pdf; https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Warranty period (yrs)Warranty period (yrs)
  6. Record updated

    Reactive power range: Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf
    After
    https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Reactive power range
  7. Record updated

    Surge protection: Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf
    After
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf; https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Surge protectionSurge protection
  8. Record updated

    Max DC:AC oversizing ratio: Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf
    After
    https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Max DC:AC oversizing ratio
  9. Record updated

    Thermal management: Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf
    After
    https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Thermal management
  10. Record updated

    Primary Source

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf
    After
    https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Primary datasheet
  11. Record updated

    Hybrid / battery capability: Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf
    After
    https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Hybrid / battery capability
  12. Record updated

    Backup / islanding: Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf; https://sol-ark.com/wp-content/uploads/2026/07/15K_Installation_Manual_Rev_13_16July2026.pdf
    After
    https://sol-ark.com/wp-content/uploads/2026/07/15K_Installation_Manual_Rev_13_16July2026.pdf; https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Backup / islandingBackup / islanding
  13. Record updated

    Grid & safety certification: Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf; https://sol-ark.com/wp-content/uploads/2024/06/SGS_Certificate_SGSNA_22_GZ_00049X_15K_Jan2026.pdf
    After
    https://sol-ark.com/wp-content/uploads/2024/06/SGS_Certificate_SGSNA_22_GZ_00049X_15K_Jan2026.pdf; https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Grid & safety certificationGrid & safety certification
  14. Record updated

    Max input current per MPPT (A): Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf
    After
    https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Max input current per MPPT (A)
  15. Record updated

    Number of MPPTs: Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf
    After
    https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Number of MPPTs
  16. Evidence added

    Evidence sources

    Before
    Not previously recorded
    After
    https://sol-ark.com/wp-content/uploads/2026/07/15K_Installation_Manual_Rev_13_16July2026.pdf; https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Primary datasheet
  17. Record updated

    Night standby consumption (W): Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf; https://solarequipment.energy.ca.gov/Home/PropertyDetails/InverterSolarList
    After
    https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf; https://solarequipment.energy.ca.gov/Home/PropertyDetails/InverterSolarList
    Night standby consumption (W)Night standby consumption (W)
  18. Record updated

    Firmware & security disclosure: Evidence sources

    Before
    https://sol-ark.com/resources/firmware-software-updates/; https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf
    After
    https://sol-ark.com/resources/firmware-software-updates/; https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Firmware & security disclosureFirmware & security disclosure
  19. Record updated

    Open protocol & API maturity: Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf; https://sol-ark.com/wp-content/uploads/2026/07/15K_Installation_Manual_Rev_13_16July2026.pdf
    After
    https://sol-ark.com/wp-content/uploads/2026/07/15K_Installation_Manual_Rev_13_16July2026.pdf; https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Open protocol & API maturityOpen protocol & API maturity
  20. Record updated

    Source revision

    Current text
    Current datasheet PS-00001 Rev8 (copyright2026; maker locator10September2026, no separate printed effective date); prior datasheet Rev7/16July2026 remains historical evidence. Bounded6October2026 citation integration confirms efficiency,MPPT/PV sizing,current,cooling,enclosure,temperature,battery-interface and power-factor fields plus backup voltage/duration explanation without changing scored values. Installation manual MA-0007 Rev13 effective16July2026 and warranty SK150-0045-002 Rev2 retained. Market and full-record verification dates unchanged.

    The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.

    Primary datasheet
  21. Record updated

    Peak efficiency (%): Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf
    After
    https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Peak efficiency (%)
  22. Record updated

    Ingress protection: Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf
    After
    https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Ingress protection
  23. Record updated

    Shutdown / arc safety: Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf; https://sol-ark.com/wp-content/uploads/2026/07/15K_Installation_Manual_Rev_13_16July2026.pdf
    After
    https://sol-ark.com/wp-content/uploads/2026/07/15K_Installation_Manual_Rev_13_16July2026.pdf; https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Shutdown / arc safetyShutdown / arc safety
  24. Record updated

    Monitoring & smart features: Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf
    After
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf; https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    Monitoring & smart featuresMonitoring & smart features
  25. Evidence added

    Summary

    Before
    Not previously recorded
    After
    At 240 V, the 15K-2P-LV specifies 12 kW continuous backup, 13 kW for 30 minutes and 24 kW for 10 seconds. At 208 V, the corresponding ratings are 10.4 kW, 11.26 kW and 20.8 kW. The 13 kW headline is a timed overload rating. Using only one battery input derates output; battery capability and installation also constrain delivery. These output ratings do not make every household load supportable. Optional RGM/EMP variants remain separate, and the newer datasheet does not establish semiconductor material or a hardware-equivalence join for revised component ratings.
    Primary datasheet
  26. Record updated

    EV charging integration: Evidence sources

    Before
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf
    After
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf; https://sol-ark.com/wp-content/uploads/2026/09/15KDatasheet_PS-00001_Rev_8_10Sept2026.pdf
    EV charging integrationEV charging integration
  27. Evidence added

    Title

    Before
    Not previously recorded
    After
    Backup ratings depend on voltage and duration
    Primary datasheet
5 changes to this record · 152 products changed in this update
  1. Evidence added

    DE Evidence sources

    Before
    Not previously recorded
    After
    https://sol-ark.com/; https://sol-ark.com/de/
    DE market evidenceUS market evidence
  2. Record updated

    Source revision

    Before
    Datasheet Rev 7 and installation manual Rev 13, both 16 July 2026; limited warranty SK150-0045-002 Rev 2
    After
    Datasheet Rev 7 and installation manual Rev 13, both 16 July 2026; limited warranty SK150-0045-002 Rev 2. First-market DE overlay review 2026-09-01: official German catalogues recorded; existing Australian and United States overlays and scores unchanged.
    Semiconductor technology
  3. Evidence added

    DE Certifications

    Before
    Not previously recorded
    After
    DE market evidenceUS market evidence
  4. Evidence added

    DE Support Note

    Before
    Not previously recorded
    After
    sol-ark.com/de opens the global United States homepage, not a German catalogue, and does not name 15K-2P-LV. A /de/ hostname that serves the US site is not a regional catalogue.
    DE market evidenceUS market evidence
  5. Evidence added

    DE Status

    Before
    Not previously recorded
    After
    unavailable
    DE market evidenceUS market evidence
4 changes to this record · 73 products changed in this update
  1. Evidence added

    Value

    Before
    Not previously recorded
    After
    Direct-pv hybrid inverter with 3 independent MPPTs at the scored model boundary.
    Semiconductor technology
  2. Evidence added

    Evidence sources

    Before
    Not previously recorded
    After
    https://sol-ark.com/wp-content/uploads/2024/06/15K-2P-LV_Datasheet_Rev_7_16July2026.pdf
    Semiconductor technology
  3. Evidence added

    State

    Before
    Not previously recorded
    After
    supported
    Semiconductor technology
  4. Evidence added

    Confidence

    Before
    Not previously recorded
    After
    high
    Semiconductor technology

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.

  1. Core scorecard evidence checked
  2. DE market evidence checked
  3. US market evidence checked
  4. Series benchmark evidence checked

Evidence record (JSON)

Scored by Solar Analytica Research

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