Illustration · 132 half-cut cells

AC solar panelQcells

Qcells Q.PEAK DUO BLK ML-G10.C1+/AC 405

Name: Qcells Q.PEAK DUO BLK ML-G10.C1+/AC 405
Brand: Qcells

132 half-cut cells. Power classes 395–415 W in the CEC list.

CEC listed · Jan 21, 2026UL 1741AC module · built-in microinverter

Power class

Power (STC)405 WCEC nameplate
Efficiency≈21.1%calculated from area
%/°C Pmax−0.362CEC listing test
PTC / STC92.9%PTC 376 W (CEC)

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · 5 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
Q.PEAK DUO BLK ML-G10.C1+/AC 395	395 W	45.27	11.10	36.88	10.71	≈20.6%	367 W	Jan 21, 2026
Q.PEAK DUO BLK ML-G10.C1+/AC 400	400 W	45.30	11.14	37.13	10.77	≈20.8%	372 W	Jan 21, 2026
Q.PEAK DUO BLK ML-G10.C1+/AC 405	405 W	45.34	11.17	37.39	10.83	≈21.1%	376 W	Jan 21, 2026
Q.PEAK DUO BLK ML-G10.C1+/AC 410	410 W	45.37	11.20	37.64	10.89	≈21.5%	386 W	Jan 21, 2026
Q.PEAK DUO BLK ML-G10.C1+/AC 415	415 W	45.41	11.23	37.89	10.95	≈21.7%	391 W	Jan 21, 2026

≈ efficiency = Pmax ÷ CEC-listed area 1.92 m².

Build & dimensions

CEC PV Module List (Oct 7, 2026)

Module area1.92 m² (20.7 ft²)CEC-listed area
Cells132 half-cut cells
Back coverBlack backsheet

Heat & cold behaviour

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation

	CEC listing test
Pmax coefficient γ	−0.362 %/°C
Voc coefficient β	−0.270 %/°C
Isc coefficient α	+0.041 %/°C
Operating cell temperature	NOCT 45.7 °C

Vmp coefficient ≈ γ − α (CEC); used only for the hot-roof voltage estimate.

Away from lab conditions — CEC listing test points

Class	Pmax at NOCT	Vmp × Imp at NOCT	Pmax at 200 W/m²	Low-light efficiency vs STC
395 W	291.8 W	34.96 V × 8.35 A	76.1 W	96%
400 W	295.4 W	35.19 V × 8.39 A	77 W	96%
405 W	299.1 W	35.44 V × 8.44 A	78 W	96%
410 W	290.7 W	35.05 V × 8.29 A	74.5 W	91%
415 W	295.2 W	35.46 V × 8.32 A	75.4 W	91%

Pmax = Vmp × Imp from the CEC listing; low-light efficiency = Pmax at 200 W/m² ÷ (20% of STC Pmax).

Independent reliability testing

Kiwa PVEL Scorecard · RETC PV Module Index

2022, 2023

PVEL Top Performer

closely related product name

Tests passed as Top Performer

LID+LETID, PID

PVEL Scorecards

Qcells named Top Performer, 2016–2026

2023, 2026

RETC Overall Highest Achiever

Qcells, manufacturer level

PVEL Top Performer tests

Year	Product	Tests
2022	Q.PEAK DUO BLK ML-G10+ (closely related product name)	LID+LETIDPID
2023	Q.PEAK DUO BLK ML-G10+ (closely related product name)	LID+LETIDPID

Tested bill of materials

PVEL-tested factorySouth Korea
Cell technology (tested BOM)p-type PERC
Module design (tested BOM)Monofacial - glass//backsheet
Power class range tested355-400W

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

RETC PV Module Index — Qcells

Year	Recognition
2023	Overall Highest Achiever; High Achievement in Performance (Module efficiency, Pan file performance); High Achievement in Reliability (Damp heat test, Pid resistance, Thermal cycle test)
2024	High Achievement in Performance
2025	Performance High Achiever
2026	Overall Highest Achiever; High achievement in performance; High achievement in reliability; Performance discipline high achiever (Conversion efficiency, Iam, Letid, Lid, PTC-to-STC, Temperature coefficient); Quality discipline high achiever (BOM verification); Reliability discipline high achiever (Sdml, Tc, Uvid, Budt, Damp heat, Hdt, Pid)

Expected production in Southern California

NLR PVWatts v8 · Cali-Graf calculation

PanelsCity for chartSystem size

City	kWh / kW / yr	kWh / panel / yr	kWh / system / yr	Sun, kWh/m²/day
Los Angeles	1,676	679	11,539	6.08
Palmdale	1,835	743	12,634	6.69
Chula Vista	1,696	687	11,677	6.11
Huntington Beach	1,643	665	11,312	5.89
Riverside	1,696	687	11,677	6.21
Santa Clarita	1,724	698	11,870	6.28

Estimate for comparison, not a quote: shading, roof orientation and local losses change real output. Roof mount, 20° tilt, south, 14% system losses.

About Qcells

CEC PV Module List (Oct 7, 2026) · Kiwa PVEL Scorecard · RETC PV Module Index · building permits

ManufacturerQcells
Listed in CEC asHanwha Qcells (Qidong) Co. Ltd., Qcells North America
Parent companyHanwha
Websiteq-cells.com
PVEL Top Performer (manufacturer)11 Scorecards (2016–2026)
RETC PV Module Index2023, 2024, 2025, 2026
Current panel series in CEC list81

Other series by SoCal permits

Q.PEAK DUO BLK ML-G10+ · 221Q.PEAK DUO BLK ML-G10.C+ · 124Q.TRON BLK M-G2+ · 40Q.TRON BLK M-G2.H+ · 33Q.TRON BLK M-G2.C+ · 24Q.TRON M-G2+ · 20

Questions & answers

How efficient is the Qcells Q.PEAK DUO BLK ML-G10.C1+/AC 405?

Calculated from the panel area (1.92 m²): about 21.1% for the 405 W class. 405 W over 1.92 m² equals about 211 W per square meter.

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

PVWatts v8 with typical-year weather gives about 679 kWh per year per 405 W panel in Los Angeles and about 743 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.362 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 18.8% below the STC rating.

Has this panel been reliability-tested?

Q.PEAK DUO BLK ML-G10+ was a PVEL Top Performer in 2022, 2023 (LID+LETID, PID) — a closely related product name.

Sources

California Energy Commission — Solar Equipment Lists, PV Module List (snapshot Oct 7, 2026).
Kiwa PVEL — PV Module Reliability Scorecard, Top Performer lists 2016–2026.
RETC — PV Module Index reports 2023–2026.
NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Chula Vista, Huntington Beach, Riverside, Santa Clarita.
Building permits — Southern California permit portals. Equipment matched from permit descriptions.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).