39.7″ · 1,008 mm wide · 1.38″ (35 mm) frame · 43 lb (19.5 kg)

Solar panelAptos Solar

Aptos Solar DNA-120-BF23 330

Name: Aptos Solar DNA-120-BF23 330
Brand: Aptos Solar

120 half-cut cells, bifacial. Power classes 320–340 W in the CEC list.

CEC listed · Jan 21, 2020UL 61730, UL 1703Bifacial

Power class

Power (STC)330 WCEC nameplate
Efficiency≈19.2%calculated from area
%/°C Pmax−0.36CEC test: −0.358
Degradation / yr0.54%after year 1 (warranty)

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
DNA-120-BF23-320W	320 W	40.18	10.13	32.99	9.70	≈18.6%	296 W	Jan 21, 2020
DNA-120-BF23-325W	325 W	40.30	10.15	33.10	9.82	≈18.9%	301 W	Jan 21, 2020
DNA-120-BF23-330W	330 W	40.39	10.25	33.24	9.93	≈19.2%	306 W	Jan 21, 2020
DNA-120-BF23-335W	335 W	40.46	10.34	33.40	10.03	≈19.5%	310 W	Jan 21, 2020
DNA-120-BF23-340W	340 W	40.60	10.43	33.62	10.11	≈19.8%	317 W	Jan 21, 2020

≈ efficiency = Pmax ÷ panel area 1.718 m² (datasheet size).

Build & dimensions

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

Dimensions67.1 × 39.7 × 1.38 in1,704 × 1,008 × 35 mm
Module area1.72 m² (18.5 ft²)length × width
Weight43 lb (19.5 kg)
Cells120 half-cut cells
Front glassLow Iron, Tempered
FrameAnodized Aluminum Alloy
Junction boxIP67
Cable / connector39.37in(1000mm)

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
320 W	230.8 W	30.63 V × 7.53 A	59.5 W	93%
325 W	234.4 W	30.73 V × 7.63 A	60.4 W	93%
330 W	238 W	30.86 V × 7.71 A	61.3 W	93%
335 W	241.6 W	31.01 V × 7.79 A	62.3 W	93%
340 W	244.8 W	31.21 V × 7.85 A	62.6 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: 30 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

43.2 V

Voc when cold

per panel

26.7 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	3–13
Solis (Ginlong) S6-EH1P10K-H-US	600 V	80–520 V	datasheet	4–13
Solis (Ginlong) Solis-1P7.6K-4G-US	600 V	100–500 V	datasheet	4–13
Qcells Q.VOLT H7.6SX	498 V	234–498 V	CEC test window	9–11

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	43.2 / 26.7 V	⚠ Works; below MPPT at peak heat	1.14
Enphase IQ8X-80-M-US	320–540 W	79.5 V	43–60 V	43.2 / 26.7 V	✗ Not a match: module voltage below MPPT range	0.87
APsystems (Alt Power System) DS3-L	265–570 W	60 V	28–45 V	43.2 / 26.7 V	⚠ Works; below MPPT at peak heat	0.42
Enphase IQ8M-72-2-US	260–460 W	60 V	30–45 V	43.2 / 26.7 V	⚠ Works; below MPPT at peak heat	1.02
Enphase IQ8A-72-2-US	295–500 W	60 V	32–45 V	43.2 / 26.7 V	⚠ Works; below MPPT at peak heat	0.95

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	553	11,615	6.08
Palmdale	1,835	606	12,717	6.69
Chula Vista	1,696	560	11,753	6.11
Huntington Beach	1,643	542	11,386	5.89
Riverside	1,696	560	11,753	6.21
Santa Clarita	1,724	569	11,947	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 330 W panels

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

Panel	Pmax	Efficiency	γ Pmax (CEC)	Voc, V	Isc, A	Size	PVEL (product / brand)	SoCal permits (series)
Aptos Solar DNA-120-BF23 330	330 W	≈19.2%	−0.358	40.39	10.25	67.1 × 39.7 in	—	—
LONGi LR4-60HPB-335M	335 W	≈18.5%	−0.337	39.9	10.76	—	product 2021, 2022	193
JinkoSolar JKM330M-60HBL	330 W	≈19.6%	−0.406	40.6	10.61	66.3 × 39.4 in	brand 12× (2014–2026)	45
Qcells Q.PEAK DUO-G8+ 330	330 W	≈18.4%	−0.343	39.71	10.52	68.5 × 40.6 in	product 2022	20

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-120-BF23 330?

Calculated from the panel area (1.72 m²): about 19.2% for the 330 W class. 330 W over 1.72 m² equals about 192 W per square meter.

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

PVWatts v8 with typical-year weather gives about 553 kWh per year per 330 W panel in Los Angeles and about 606 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 3–13 panels per string (Voc at 2 °C = 43.2 V, Vmp at 74 °C cell = 26.7 V). Final design must follow the inverter manual and NEC 690.7.

What does the warranty cover?

25 years on the product (manufacturer datasheet).

How big and heavy is it?

67.1 × 39.7 × 1.38 in (1,704 × 1,008 × 35 mm), 43 lb (19.5 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 Legacy Products.
Aptos Solar — manufacturer datasheet “DNA-120 ALL-BLACK BI-FACIAL DESIGN Maximize Energy Production”.
JinkoSolar — datasheet THE MOST DEPENDABLE SOLAR BRAND.
JinkoSolar — manufacturer datasheet “Eagle HC 60M G2 315-335 Watt MONO PERC HALF CELL MODULE”.
Qcells — manufacturer datasheet “Q.PEAK DUO-G8+ 345-360 EN ENDURING HIGH”.
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).