Illustration · 108 half-cut cells

AC solar panelQcells

Qcells Q.TRON BLK M-G2.F1+/AC 420

Name: Qcells Q.TRON BLK M-G2.F1+/AC 420
Brand: Qcells

108 half-cut cells. Power classes 405–440 W in the CEC list.

CEC listed · Dec 22, 2025UL 1741AC module · built-in microinverter

Power class

Power (STC)420 WCEC nameplate
Efficiency≈22.1%calculated from area
%/°C Pmax−0.314CEC listing test
PTC / STC93.8%PTC 394 W (CEC)

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · 8 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
Q.TRON BLK M-G2.F1+/AC 405	405 W	37.91	13.33	31.93	12.69	≈21.3%	380 W	Dec 22, 2025
Q.TRON BLK M-G2.F1+/AC 410	410 W	38.19	13.41	32.13	12.76	≈21.6%	384 W	Dec 22, 2025
Q.TRON BLK M-G2.F1+/AC 415	415 W	38.47	13.49	32.34	12.83	≈21.8%	389 W	Dec 22, 2025
Q.TRON BLK M-G2.F1+/AC 420	420 W	38.75	13.58	32.54	12.91	≈22.1%	394 W	Dec 22, 2025
Q.TRON BLK M-G2.F1+/AC 425	425 W	39.03	13.66	32.74	12.98	≈22.4%	399 W	Dec 22, 2025
Q.TRON BLK M-G2.F1+/AC 430	430 W	39.32	13.74	32.94	13.05	≈22.6%	404 W	Dec 22, 2025
Q.TRON BLK M-G2.F1+/AC 435	435 W	39.60	13.82	33.14	13.13	≈22.9%	409 W	Dec 22, 2025
Q.TRON BLK M-G2.F1+/AC 440	440 W	39.88	13.90	33.33	13.20	≈23.2%	413 W	Dec 22, 2025

≈ efficiency = Pmax ÷ CEC-listed area 1.9 m².

Build & dimensions

CEC PV Module List (Oct 7, 2026)

Module area1.9 m² (20.5 ft²)CEC-listed area
Cells108 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	−0.314 %/°C
Voc coefficient β	−0.245 %/°C
Isc coefficient α	+0.036 %/°C
Operating cell temperature	NOCT 46.1 °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
405 W	299.3 W	30.02 V × 9.97 A	76.4 W	94%
410 W	302.8 W	30.21 V × 10.03 A	77.3 W	94%
415 W	306.5 W	30.41 V × 10.08 A	78.2 W	94%
420 W	310.3 W	30.59 V × 10.14 A	79.2 W	94%
425 W	313.9 W	30.78 V × 10.2 A	80.1 W	94%
430 W	317.5 W	30.97 V × 10.25 A	81.1 W	94%
435 W	321.4 W	31.16 V × 10.32 A	82 W	94%
440 W	325 W	31.34 V × 10.37 A	83 W	94%

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

PVEL Scorecards

Qcells named Top Performer, 2016–2026

2023, 2026

RETC Overall Highest Achiever

Qcells, manufacturer level

This exact series is not listed in published PVEL Top Performer tables. Results below are for the manufacturer.

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	704	11,967	6.08
Palmdale	1,835	771	13,102	6.69
Chula Vista	1,696	712	12,109	6.11
Huntington Beach	1,643	690	11,731	5.89
Riverside	1,696	712	12,109	6.21
Santa Clarita	1,724	724	12,309	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.TRON BLK M-G2.F1+/AC 420?

Calculated from the panel area (1.9 m²): about 22.1% for the 420 W class. 420 W over 1.9 m² equals about 221 W per square meter.

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

PVWatts v8 with typical-year weather gives about 704 kWh per year per 420 W panel in Los Angeles and about 771 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.314 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 16.3% below the STC rating.

Has this panel been reliability-tested?

This exact series is not in published PVEL Top Performer tables; Qcells was named a Top Performer in 11 Scorecards (2016–2026). RETC named Qcells Overall Highest Achiever in 2023, 2026.

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).