Cali-GrafCali-Graf
For pros Sign in
Illustration · 66 cells
Solar panelMaxeon Solar Technologies

Maxeon Solar Technologies SPR-MAX6 435

66 cells. Power classes 400–445 W in the CEC list; datasheet covers 410–425 W.

CEC listed · Dec 12, 2022UL 6173025-yr product + 25-yr performance warrantyPVEL Top Performer 2024Made in MalaysiaInstalled in 2 SoCal permits
Power class
  • Power (STC)435 Wtolerance +5 / −0 %
  • Efficiency≥22.5%datasheet minimum
  • %/°C Pmax−0.276CEC listing test
  • Degradation / yr0.25%after year 1 (warranty)

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · Maxeon Solar Technologies datasheet · 10 models
ModelPmaxVoc, VIsc, AVmp, VImp, AEfficiencyPTCCEC listed
SPR-MAX6-400400 W48.1010.8639.5310.12≈21.4%377 WDec 12, 2022
SPR-MAX6-405405 W48.1010.8839.5410.24≈21.7%382 WDec 12, 2022
SPR-MAX6-410410 W48.1510.8940.0310.24≈21.9%387 WDec 12, 2022
SPR-MAX6-415415 W48.0711.5239.3310.55≈22.2%391 WDec 12, 2022
SPR-MAX6-420420 W48.1011.5339.5610.62≈22.5%396 WDec 12, 2022
SPR-MAX6-425425 W48.1311.5539.8010.68≥22.0%401 WDec 12, 2022
SPR-MAX6-430430 W48.1511.5640.0310.74≈23.0%406 WDec 12, 2022
SPR-MAX6-435435 W48.1811.5740.2610.82≥22.5%411 WDec 12, 2022
SPR-MAX6-440440 W48.2111.5840.4910.87≥22.8%416 WDec 12, 2022
SPR-MAX6-445445 W48.2011.6040.7010.93≈23.8%420 WFeb 12, 2024
≈ efficiency = Pmax ÷ CEC-listed area 1.87 m² for classes outside the datasheet.

Build & dimensions

CEC PV Module List (Oct 7, 2026) · Maxeon Solar Technologies datasheet

Heat & cold behaviour

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation
CEC listing test
Pmax coefficient γ−0.276 %/°C
Voc coefficient β−0.234 %/°C
Isc coefficient α+0.042 %/°C
Operating cell temperatureNOCT 47.2 °C
Vmp coefficient ≈ γ − α (CEC); used only for the hot-roof voltage estimate.

Away from lab conditions — CEC listing test points

ClassPmax at NOCTVmp × Imp at NOCTPmax at 200 W/m²Low-light efficiency vs STC
400 W307.8 W38.12 V × 8.07 A77.4 W97%
405 W315.4 W38.61 V × 8.17 A79.3 W98%
410 W311.6 W38.13 V × 8.17 A78.3 W96%
415 W319.3 W37.93 V × 8.42 A80.3 W97%
420 W323.3 W38.15 V × 8.47 A81.3 W97%
425 W327.1 W38.38 V × 8.52 A82.2 W97%
430 W330.8 W38.61 V × 8.57 A83.2 W97%
435 W335.2 W38.83 V × 8.63 A84.3 W97%
440 W338.7 W39.05 V × 8.67 A85.1 W97%
445 W342.7 W39.3 V × 8.72 A86 W97%
Pmax = Vmp × Imp from the CEC listing; low-light efficiency = Pmax at 200 W/m² ÷ (20% of STC Pmax).

Electrical & strength ratings

Maxeon Solar Technologies datasheet
Packaging: 25 per pallet · 600 per container

Certifications

CEC PV Module List (Oct 7, 2026) · Maxeon Solar Technologies datasheet
UL 61730IEC 61215IEC 61730IEC 61701IEC 62716IEC 62804IEC 60068Fire rating Class C (UL 61730)ISO 14001ISO 45001ISO 9001

Warranty & degradation

Maxeon Solar Technologies datasheet

Independent reliability testing

Kiwa PVEL Scorecard
2024
PVEL Top Performer
this series
5
Tests passed as Top Performer
DH, HSS, MSS, PID, TC
8
PVEL Scorecards
Maxeon Solar Technologies named Top Performer, 2017–2025

PVEL Top Performer tests

YearProductTests
2024SPR-MAX6-xxxDHHSSMSSPIDTC
2024SPR-MAX6-xxx-COM (closely related product name)DHPID
2024SPR-MAX6-xxx-E4-AC (closely related product name)DHHSSMSSPIDTC
2024SPR-MAX6-xxx-E4-BLK-AC (closely related product name)DHHSSPIDTC

Tested bill of materials

Details describe the tested sample, not every module of the series.

Inverter compatibility & string sizing

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · NLR PVWatts v8 · inverter datasheets · NLR SAM inverter library · CEC Grid Support Inverter List (Oct 7, 2026)
50.8 V
Voc when cold
per panel
34 V
Vmp when hot
per panel
11
Max panels / string
max DC 600 V
2
Min panels / string
MPPT from 60 V
Defaults come from NLR TMY weather (coldest hour, hottest modeled cell). Code calculations (NEC 690.7) use the ASHRAE extreme annual minimum, which is usually colder — enter it above. β is the CEC-measured coefficient; NEC 690.7 calculations use the datasheet value.

String inverters most named in SoCal permits

InverterMax DC inputMPPTWindow sourcePanels per string
Tesla 1538000-xx-y600 V60–480 Vdatasheet2–11
Solis (Ginlong) S6-EH1P10K-H-US600 V80–520 Vdatasheet3–11
Solis (Ginlong) Solis-1P7.6K-4G-US600 V100–500 Vdatasheet3–11
Qcells Q.VOLT H7.6SX498 V234–498 VCEC test window7–9

Microinverters (one per panel)

MicroinverterRecommended module powerMax DC inputMPPTVoc cold / Vmp hotCheckDC/AC
Enphase IQ8PLUS-72-2-US235–440 W60 V29–45 V50.8 / 34 V✓ Within range1.5
Enphase IQ8X-80-M-US320–540 W79.5 V43–60 V50.8 / 34 V✗ Not a match: module voltage below MPPT range1.14
APsystems (Alt Power System) DS3-L265–570 W60 V28–45 V50.8 / 34 V✓ Within range0.56
Enphase IQ8M-72-2-US260–460 W60 V30–45 V50.8 / 34 V✓ Within range1.34
Enphase IQ8A-72-2-US295–500 W60 V32–45 V50.8 / 34 V✓ Within range1.25
Voltage check against the microinverter datasheets — confirm the pairing on the manufacturer’s module compatibility list. Rows appear only when the panel’s power is inside the microinverter’s recommended module power range.
SolarEdge and other optimizer-based systems size strings by the optimizer rules — use the manufacturer’s designer. Reference inverters: most named in SoCal permits since Oct 2024.

Expected production in Southern California

NLR PVWatts v8 · Cali-Graf calculation
CitykWh / kW / yrkWh / panel / yrkWh / system / yrSun, kWh/m²/day
Los Angeles1,67672911,6656.08
Palmdale1,83579812,7726.69
Chula Vista1,69673811,8046.11
Huntington Beach1,64371511,4355.89
Riverside1,69673811,8046.21
Santa Clarita1,72475011,9996.28
761Jan762Feb978Mar1,080Apr1,067May1,134Jun1,194Jul1,208Aug1,057Sep932Oct801Nov693DeckWh per month · Los Angeles
Estimate for comparison, not a quote: shading, roof orientation and local losses change real output. Roof mount, 20° tilt, south, 14% system losses.

Who installs SPR-MAX6 panels in SoCal

building permits · CSLB License Master
2
Permits naming this series
Apr 2025 – May 2025
1
Licensed installers
CSLB license on the permit
2
Jurisdictions so far
Huntington Beach (1), LA County (unincorp.) (1)
ST
Solar Tech Energy Systems Inc
El Cajon · CSLB #1106777
1 installApr 2025Huntington Beach
Only installer and ZIP level is shown — no homeowner names, street addresses or permit numbers. Permits from LA County (unincorp.) come without a contractor license, so they count toward totals but not toward installers. Counts grow as more permit portals are loaded.

Other versions of this panel

CEC PV Module List (Oct 7, 2026)
Maxeon Solar Technologies SPR-MAX6-xxx-BLK
Color version · 400–425 W · listed 2024

Compare with similar 435 W panels

CEC PV Module List (Oct 7, 2026) · datasheets · Kiwa PVEL Scorecard · building permits
PanelPmaxEfficiencyγ Pmax (CEC)Voc, VIsc, AWarrantyPVEL (product / brand)SoCal permits (series)
Maxeon Solar Technologies SPR-MAX6 435435 W≥22.5%−0.27648.1811.5725 / 25 yrproduct 20242
Canadian Solar CS3N-430MS430 W≈21.8%−0.33245.711.8625 yrproduct 202346
Qcells Q.TRON BLK M-G2+ 435435 W≥22.3%−0.27639.613.8225 / 25 yrbrand 11× (2016–2026)40
Silfab Solar SIL-435QD435 W≈22.3%−0.29438.9414.0525 / 30 yrbrand 7× (2017–2025)39
Same fields from the same sources for every row; ≈ efficiency is calculated from the listed area. Comparable series: other brands, same product group, power range covering this class.

Documents

manufacturer documents

About Maxeon Solar Technologies

CEC PV Module List (Oct 7, 2026) · Kiwa PVEL Scorecard

Other series by SoCal permits

SPR-MAX6-xxx-BLKSPR-MAX3SPR-MAX3-xxx-BLKSPR-MAX3-xxx-BLK-RSPR-MAX3-xxx-COMSPR-MAX3-xxx-COM-R

Questions & answers

How efficient is the Maxeon Solar Technologies SPR-MAX6 435?

The Maxeon Solar Technologies datasheet guarantees at least 22.5% module efficiency for the 435 W class (up to 22.8% for 440 W). 435 W over 1.87 m² equals about 233 W per square meter.

How much energy does one panel produce in Los Angeles or Palmdale?

PVWatts v8 with typical-year weather gives about 729 kWh per year per 435 W panel in Los Angeles and about 798 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.276 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 14.3% below the STC rating.

How many panels fit on one string?

With the Tesla 1538000-xx-y (max DC 600 V, MPPT from 60 V, datasheet) in Los Angeles the calculator gives 2–11 panels per string (Voc at 2 °C = 50.8 V, Vmp at 74 °C cell = 34 V). Final design must follow the inverter manual and NEC 690.7.

Does it work with Enphase IQ8PLUS-72-2-US microinverters?

Voltage check against the Enphase datasheet: Voc when cold 50.8 V vs max input 60 V; Vmp when hot 34 V vs MPPT low 29 V; recommended module power 235–440 W. Confirm on the microinverter maker’s compatibility list.

What does the warranty cover?

25 years on the product and 25 years on performance (manufacturer datasheet).

Has this panel been reliability-tested?

SPR-MAX6-xxx was a PVEL Top Performer in 2024 (DH, HSS, MSS, PID, TC).

What fire rating does it have?

UL 61730 fire rating Class C per datasheet.

Sources

  1. California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
  2. Maxeon Solar Technologies — datasheet Maxeon 6 SPR-MAX6-XXX-BLK Home Solar Panel.
  3. Maxeon Solar Technologies — datasheet Maxeon 6 SPR-MAX6-XXX Home Solar Panel.
  4. Canadian Solar — manufacturer datasheet “HiKu Mono PERC CS3N-400|405|410|415|420|425MS MORE POWER”.
  5. Qcells — manufacturer datasheet “Q.TRON BLK M-G2+ SERIES 415–440 Wp”.
  6. Silfab Solar — datasheet NTC SIL-420 QD CELL TECHNOLOGY.
  7. Maxeon Solar Technologies — document library on the manufacturer’s website (links above).
  8. Kiwa PVEL — PV Module Reliability Scorecard, Top Performer lists 2017–2025.
  9. NLR (formerly NREL) — System Advisor Model CEC inverter library (version 2026.7.3).
  10. NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Chula Vista, Huntington Beach, Riverside, Santa Clarita.
  11. Inverter datasheets — APsystems (Alt Power System), Enphase, Solis (Ginlong), Tesla (manufacturer documents).
  12. Building permits — City of Huntington Beach (Apr 2025); Los Angeles County Public Works (EPIC-LA, unincorporated areas) (May 2025). Equipment matched from permit descriptions by model number.
  13. Contractors State License Board — License Master (contractor names and license status), as of Oct 5, 2026.
  14. Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).