39.4″ · 1,002 mm wide · 1.57″ (40 mm) frame · 51.4 lb (23.3 kg)

Solar panelAptos Solar

Aptos Solar DNA-144-BF23 400

Name: Aptos Solar DNA-144-BF23 400
Brand: Aptos Solar

144 half-cut cells, bifacial. Power classes 390–415 W in the CEC list; datasheet covers 390–400 W.

CEC listed · Jan 13, 2020UL 61730, UL 1703Bifacial

Power class

Power (STC)400 WCEC nameplate
Efficiency≥19.8%datasheet minimum
%/°C Pmax−0.36CEC test: −0.358
Degradation / yr0.54%after year 1 (warranty)

Power classes

CEC PV Module List (Oct 7, 2026) · Aptos Solar datasheet · Cali-Graf calculation · 6 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
DNA-144-BF23-390W	390 W	48.18	10.14	39.68	9.83	≥19.3%	361 W	Jan 13, 2020
DNA-144-BF23-395W	395 W	48.26	10.23	39.82	9.92	≥19.5%	366 W	Jan 13, 2020
DNA-144-BF23-400W	400 W	48.35	10.32	40.00	10.00	≥19.8%	370 W	Jan 13, 2020
DNA-144-BF23-405W	405 W	48.45	10.42	40.18	10.08	≈20.1%	375 W	Jan 13, 2020
DNA-144-BF23-410W	410 W	48.56	10.51	40.38	10.16	≈20.4%	383 W	Jan 13, 2020
DNA-144-BF23-415W	415 W	48.64	10.61	40.50	10.25	≈20.6%	388 W	Jan 13, 2020

≈ efficiency = Pmax ÷ panel area 2.012 m² (datasheet size) for classes outside the datasheet.

Build & dimensions

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

Dimensions79.1 × 39.4 × 1.57 in2,008 × 1,002 × 40 mm
Module area2.01 m² (21.7 ft²)length × width
Weight51.4 lb (23.3 kg)
Cells144 half-cut cells
Front glassLow Iron, Tempered
FrameAnodized Aluminum Alloy
Junction boxIP67
Cable / connector39.37in(1200mm)

Heat & cold behaviour

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

	Datasheet	CEC listing test
Pmax coefficient γ	−0.36 %/°C	−0.358 %/°C
Voc coefficient β	−0.31 %/°C	−0.275 %/°C
Isc coefficient α	—	+0.046 %/°C
Vmp coefficient	≈ −0.40 %/°C	—
Operating cell temperature	NMOT 45 °C	NOCT 46.4 °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
390 W	282.6 W	36.78 V × 7.68 A	73.1 W	94%
395 W	286.2 W	36.91 V × 7.75 A	74 W	94%
400 W	289.8 W	37.08 V × 7.82 A	75 W	94%
405 W	293.5 W	37.25 V × 7.88 A	75.9 W	94%
410 W	295.4 W	37.53 V × 7.87 A	75.6 W	92%
415 W	298.9 W	37.64 V × 7.94 A	76.5 W	92%

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 voltage1,500 V
Max series fuse20 A
Fire rating (UL 61730)Class C

Packaging: 27 per pallet

Certifications

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

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

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

Warranty & degradation

Aptos Solar datasheets

Product warranty25 years
Then≤ 0.54% / year

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

51.8 V

Voc when cold

per panel

32.1 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	4–11
Qcells Q.VOLT H7.6SX	498 V	234–498 V	CEC test window	8–9

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	51.8 / 32.1 V	✓ Within range	1.38
Enphase IQ8X-80-M-US	320–540 W	79.5 V	43–60 V	51.8 / 32.1 V	✗ Not a match: module voltage below MPPT range	1.05
APsystems (Alt Power System) DS3-L	265–570 W	60 V	28–45 V	51.8 / 32.1 V	✓ Within range	0.51
Enphase IQ8M-72-2-US	260–460 W	60 V	30–45 V	51.8 / 32.1 V	✓ Within range	1.23
Enphase IQ8A-72-2-US	295–500 W	60 V	32–45 V	51.8 / 32.1 V	✓ Within range	1.15

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	670	12,067	6.08
Palmdale	1,835	734	13,212	6.69
Chula Vista	1,696	678	12,211	6.11
Huntington Beach	1,643	657	11,830	5.89
Riverside	1,696	678	12,211	6.21
Santa Clarita	1,724	690	12,413	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 400 W panels

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

Panel	Pmax	Efficiency	γ Pmax (CEC)	Voc, V	Isc, A	PVEL (product / brand)	SoCal permits (series)
Aptos Solar DNA-144-BF23 400	400 W	≥19.8%	−0.358	48.35	10.32	—	—
Qcells Q.PEAK DUO BLK ML-G10+ 400	400 W	≥20.4%	−0.362	45.3	11.14	product 2022, 2023	221
JA Solar JAM54S31-400/MR	400 W	≈21.1%	−0.329	37.07	13.79	product 2023, 2024	152
REC Group REC400AA Pure	400 W	≈22.3%	−0.256	48.8	10.25	brand 9× (2016–2025)	66

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
Legacy Products
Datasheet · Aptos Solar Technology · Jan 2026
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-BF23 400?

The Aptos Solar datasheet guarantees at least 19.8% module efficiency for the 400 W class. 400 W over 2.01 m² equals about 199 W per square meter.

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

PVWatts v8 with typical-year weather gives about 670 kWh per year per 400 W panel in Los Angeles and about 734 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.36 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 18.6% 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 = 51.8 V, Vmp at 74 °C cell = 32.1 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 51.8 V vs max input 60 V; Vmp when hot 32.1 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 (manufacturer datasheet).

How big and heavy is it?

79.1 × 39.4 × 1.57 in (2,008 × 1,002 × 40 mm), 51.4 lb (23.3 kg).

Is it bifacial?

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

Sources

California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
Aptos Solar — datasheet Legacy Products.
Aptos Solar — manufacturer datasheet “DNA-144 A L L–B L A C K B I–FA C I A L D E S I G N”.
Qcells — manufacturer datasheet “Q.PEAK DUO BLK ML-G10+ ENDURING HIGH PERFORMANCE”.
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 — 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).