40.9″ · 1,039 mm wide · 1.38″ (35 mm) frame · 55.3 lb (25.1 kg)

Solar panelAptos Solar

Aptos Solar DNA-144-BF26 440

Name: Aptos Solar DNA-144-BF26 440
Brand: Aptos Solar

144 half-cut cells, bifacial. Power classes 430–440 W in the CEC list; datasheet covers 430–450 W.

CEC listed · Aug 23, 2021UL 61730BifacialSeen in 1 SoCal permit

Power class

Power (STC)440 WCEC nameplate
Efficiency≥20.2%datasheet minimum
%/°C Pmax−0.366CEC listing test
PTC / STC92.3%PTC 406 W (CEC)

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · Aptos Solar datasheet · 3 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
DNA-144-BF26-430W	430 W	49.17	10.85	41.51	10.36	≈19.8%	396 W	Aug 23, 2021
DNA-144-BF26-435W	435 W	49.38	10.92	41.75	10.42	≈20.0%	401 W	Aug 23, 2021
DNA-144-BF26-440W	440 W	49.57	11.00	41.99	10.48	≥20.2%	406 W	Aug 23, 2021

≈ efficiency = Pmax ÷ panel area 2.177 m² (datasheet size) for classes outside the datasheet.

Build & dimensions

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

Dimensions82.5 × 40.9 × 1.38 in2,095 × 1,039 × 35 mm
Module area2.18 m² (23.4 ft²)length × width
Weight55.3 lb (25.1 kg)
Cells144 half-cut cells
Front glasstransmission, low iron, tempered glass
FrameAnodized Aluminum Alloy
Junction boxIP68
Cable / connector4mm2 (EU)12AWG · Staubli EVO2

Heat & cold behaviour

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

	Datasheet	CEC listing test
Pmax coefficient γ	—	−0.366 %/°C
Voc coefficient β	−0.29 %/°C	−0.293 %/°C
Isc coefficient α	+0.05 %/°C	+0.045 %/°C
Vmp coefficient	≈ −0.41 %/°C	—
Operating cell temperature	NMOT 44 °C	NOCT 47.2 °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
430 W	317.3 W	39.01 V × 8.13 A	77.8 W	91%
435 W	321 W	39.24 V × 8.18 A	78.7 W	91%
440 W	324.7 W	39.46 V × 8.23 A	79.6 W	91%

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

Electrical & strength ratings

Aptos Solar datasheet

Max system voltage1,000 V
Max series fuse20 A
Fire rating (UL 61730)Class C
Design load push / pull129 psf6,200 Pa

Packaging: 31 per pallet

Certifications

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

UL 61730UL 1703Fire rating Class C (UL 61730)

UL 61730CEC listing
UL 1703datasheet
Fire rating Class C (UL 61730)datasheet

Independent reliability testing

RETC PV Module Index

Aptos Solar recognized 2023–2024

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

RETC PV Module Index — Aptos Solar

Year	Recognition
2023	High Achievement in Performance (LeTID RESISTANCE)
2024	Test Category High Achiever

Inverter compatibility & string sizing

Aptos Solar datasheet · Cali-Graf calculation · NLR PVWatts v8 · CEC PV Module List (Oct 7, 2026) · inverter datasheets · NLR SAM inverter library · CEC Grid Support Inverter List (Oct 7, 2026)

CityColdest air, °CHottest cell, °CString inverter

52.9 V

Voc when cold

per panel

33.5 V

Vmp when hot

per panel

Max panels / string

max DC 600 V

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.

String inverters most named in SoCal permits

Inverter	Max DC input	MPPT	Window source	Panels per string
Tesla 1538000-xx-y	600 V	60–480 V	datasheet	2–11
Solis (Ginlong) S6-EH1P10K-H-US	600 V	80–520 V	datasheet	3–11
Solis (Ginlong) Solis-1P7.6K-4G-US	600 V	100–500 V	datasheet	3–11
Qcells Q.VOLT H7.6SX	498 V	234–498 V	CEC test window	7–9

Microinverters (one per panel)

Microinverter	Recommended module power	Max DC input	MPPT	Voc cold / Vmp hot	Check	DC/AC
Enphase IQ8PLUS-72-2-US	235–440 W	60 V	29–45 V	52.9 / 33.5 V	✓ Within range	1.52
Enphase IQ8X-80-M-US	320–540 W	79.5 V	43–60 V	52.9 / 33.5 V	✗ Not a match: module voltage below MPPT range	1.16
APsystems (Alt Power System) DS3-L	265–570 W	60 V	28–45 V	52.9 / 33.5 V	✓ Within range	0.56
Enphase IQ8M-72-2-US	260–460 W	60 V	30–45 V	52.9 / 33.5 V	✓ Within range	1.35
Enphase IQ8A-72-2-US	295–500 W	60 V	32–45 V	52.9 / 33.5 V	✓ Within range	1.26

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

PanelsCity for chartSystem size

City	kWh / kW / yr	kWh / panel / yr	kWh / system / yr	Sun, kWh/m²/day
Los Angeles	1,676	737	11,799	6.08
Palmdale	1,835	807	12,918	6.69
Chula Vista	1,696	746	11,940	6.11
Huntington Beach	1,643	723	11,567	5.89
Riverside	1,696	746	11,940	6.21
Santa Clarita	1,724	759	12,137	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.

Compare with similar 440 W panels

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

Panel	Pmax	Efficiency	γ Pmax (CEC)	Voc, V	Isc, A	Size	Warranty	PVEL (product / brand)	SoCal permits (series)
Aptos Solar DNA-144-BF26 440	440 W	≥20.2%	−0.366	49.57	11	82.5 × 40.9 in	—	—	1
Qcells Q.TRON BLK M-G2+ 440	440 W	≥22.5%	−0.276	39.88	13.9	67.8 × 44.6 in	25 / 25 yr	brand 11× (2016–2026)	40
Silfab Solar SIL-440QD	440 W	≈22.6%	−0.294	38.97	14.25	67.8 × 44.6 in	25 / 30 yr	brand 7× (2017–2025)	39
Hyundai Energy Solutions HiN-T440NF(BK)	440 W	≈22.7%	−0.298	38.8	14.39	—	25 / 30 yr	brand 5× (2017–2025)	37

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

PDF
DNA-160 Bifacial440W | 435W | 430W
Datasheet · Aptos Solar Technology · Feb 2024
PDF
Legacy Products
Datasheet · Aptos Solar Technology · Aug 2024
PDF
Warranty
Warranty · Aptos Solar Technology · Jun 2024

About Aptos Solar

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

ManufacturerAptos Solar
Listed in CEC asAptos Solar Technology LLC
Websiteaptossolar.com
RETC PV Module Index2023, 2024
Current panel series in CEC list29

Other series by SoCal permits

DNA-144-MF26 · 23DNA-120-MF10 · 22DNA-120-MF26 · 8DNA-120-BF10 · 2DNA-108-BF10 · 1DNA-108-MF10 · 1

Questions & answers

How efficient is the Aptos Solar DNA-144-BF26 440?

The Aptos Solar datasheet guarantees at least 20.2% module efficiency for the 440 W class. 440 W over 2.18 m² equals about 202 W per square meter.

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

PVWatts v8 with typical-year weather gives about 737 kWh per year per 440 W panel in Los Angeles and about 807 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.366 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 19% 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 = 52.9 V, Vmp at 74 °C cell = 33.5 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 52.9 V vs max input 60 V; Vmp when hot 33.5 V vs MPPT low 29 V; recommended module power 235–440 W. Confirm on the microinverter maker’s compatibility list.

How big and heavy is it?

82.5 × 40.9 × 1.38 in (2,095 × 1,039 × 35 mm), 55.3 lb (25.1 kg).

Is it bifacial?

Yes. Rear gain depends on mounting height and ground reflectance.

What fire rating does it have?

UL 61730 fire rating Class C per datasheet.

Sources

California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
Aptos Solar — datasheet DNA-160 Bifacial440W | 435W | 430W.
Qcells — manufacturer datasheet “Q.TRON BLK M-G2+ SERIES 415–440 Wp”.
Silfab Solar — datasheet NTC SIL-420 QD CELL TECHNOLOGY.
Hyundai Energy Solutions — datasheet [US] NF(BK)(HiN) Series (N TOPCon Bifacial) 435~445W.
Aptos Solar — document library on the manufacturer’s website (links above).
Kiwa PVEL — PV Module Reliability Scorecard, Top Performer lists.
RETC — PV Module Index reports 2023–2024.
NLR (formerly NREL) — System Advisor Model CEC module and inverter libraries (version 2026.7.3).
NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Chula Vista, Huntington Beach, Riverside, Santa Clarita.
Inverter datasheets — APsystems (Alt Power System), Enphase, Solis (Ginlong), Tesla (manufacturer documents).
Building permits — Los Angeles County Public Works (EPIC-LA, unincorporated areas) (Sep 2021). Equipment matched from permit descriptions by model number.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).