44.6″ · 1,134 mm wide · 1.38″ (35 mm) frame · 71.2 lb (32.3 kg)

Solar panelAptos Solar

Aptos Solar DNA-144-BF10-550W-DG

Name: Aptos Solar DNA-144-BF10-550W-DG
Brand: Aptos Solar

144 half-cut cells, PERC. Power classes 535–555 W in the CEC list; datasheet covers 540–550 W.

CEC listed · Mar 21, 2024UL 61730PERC

Power class

Power (STC)550 WCEC nameplate
Efficiency≥21.3%datasheet minimum
%/°C Pmax−0.34CEC test: −0.335
PTC / STC94.3%PTC 518 W (CEC)

Power classes

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

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
DNA-144-BF10-535W-DG	535 W	49.40	13.78	41.50	12.90	≈20.7%	504 W	Mar 21, 2024
DNA-144-BF10-540W-DG	540 W	49.50	13.85	41.70	12.97	≥20.9%	509 W	Mar 21, 2024
DNA-144-BF10-545W-DG	545 W	49.70	13.92	41.80	13.04	≥21.1%	514 W	Mar 21, 2024
DNA-144-BF10-550W-DG	550 W	49.80	13.99	42.00	13.11	≥21.3%	518 W	Mar 21, 2024
DNA-144-BF10-555W-DG	555 W	50.00	14.02	42.10	13.18	≈21.5%	523 W	Mar 21, 2024

≈ efficiency = Pmax ÷ panel area 2.583 m² (datasheet size) for classes outside the datasheet.

Build & dimensions

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

Dimensions89.7 × 44.6 × 1.38 in2,278 × 1,134 × 35 mm
Module area2.58 m² (27.8 ft²)length × width
Weight71.2 lb (32.3 kg)
Cells144 half-cut cellsPERC
Front glass2mm (0.078 in)
Back coverGlass (dual-glass module)
FrameAnodized Aluminum Alloy
Junction boxIP68
Cable / connector4mm 2 (EU)12AWG · Staubli EVO2

Heat & cold behaviour

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

	Datasheet	CEC listing test
Pmax coefficient γ	−0.34 %/°C	−0.335 %/°C
Voc coefficient β	−0.28 %/°C	−0.277 %/°C
Isc coefficient α	+0.04 %/°C	+0.036 %/°C
Vmp coefficient	≈ −0.37 %/°C	—
Operating cell temperature	NMOT 45 °C	NOCT 43.2 °C

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

At normal operating conditions (NOCT, 800 W/m²) — datasheet

Class	Pmax, W	Voc, V	Isc, A	Vmp, V	Imp, A
540 W	404.0	46.76	12.15	38.34	10.54
545 W	408.0	46.85	12.26	38.41	10.62
550 W	411.0	46.93	12.33	38.48	10.70

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
535 W	408.6 W	39.1 V × 10.45 A	103.9 W	97%
540 W	412 W	39.2 V × 10.51 A	104.7 W	97%
545 W	416.1 W	39.4 V × 10.56 A	105.5 W	97%
550 W	419.5 W	39.5 V × 10.62 A	106.6 W	97%
555 W	422.9 W	39.6 V × 10.68 A	107.4 W	97%

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 fuse30 A
Fire rating (UL 61730)Type 29
Design load push / pull113 psf5,400 Pa

Packaging: 31 per pallet

Certifications

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

UL 61730UL 1703Fire rating Type 29 (UL 61730)

UL 61730CEC listing
UL 1703datasheet
Fire rating Type 29 (UL 61730)datasheet

Warranty & degradation

Aptos Solar datasheet

Product warranty30 years

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

53 V

Voc when cold

per panel

34.4 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
APsystems (Alt Power System) DS3-L	265–570 W	60 V	28–45 V	53 / 34.4 V	✓ Within range	0.71

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	922	11,983	6.08
Palmdale	1,835	1,009	13,120	6.69
Chula Vista	1,696	933	12,126	6.11
Huntington Beach	1,643	904	11,747	5.89
Riverside	1,696	933	12,126	6.21
Santa Clarita	1,724	948	12,327	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 550 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-144-BF10-550W-DG	550 W	≥21.3%	−0.335	49.8	13.99	89.7 × 44.6 in	—	—
JA Solar JAM72D30-550/MB	550 W	≈21.8%	−0.330	49.9	14	—	product 2023, 2024	3
LONGi LR5-72HBD-550M	550 W	≥21.5%	−0.354	49.8	13.99	88.8 × 44.6 in	product 2026	1
Canadian Solar CS6W-550MB-AG	550 W	≈21.4%	−0.324	49.6	14	89.2 × 44.6 in	product 2024	1

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
Datasheets – DG
Datasheet · Aptos Solar Technology · Aug 2026
PDF
DNA-144-BF10-550W-DG 550W | 545W | 540W
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-BF10-550W-DG?

The Aptos Solar datasheet guarantees at least 21.3% module efficiency for the 550 W class. 550 W over 2.58 m² equals about 213 W per square meter.

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

PVWatts v8 with typical-year weather gives about 922 kWh per year per 550 W panel in Los Angeles and about 1,009 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.34 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 17.4% 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 = 53 V, Vmp at 74 °C cell = 34.4 V). Final design must follow the inverter manual and NEC 690.7.

Does it work with APsystems (Alt Power System) DS3-L microinverters?

Voltage check against the APsystems (Alt Power System) datasheet: Voc when cold 53 V vs max input 60 V; Vmp when hot 34.4 V vs MPPT low 28 V; recommended module power 265–570 W. Confirm on the microinverter maker’s compatibility list.

What does the warranty cover?

30 years on the product (manufacturer datasheet).

How big and heavy is it?

89.7 × 44.6 × 1.38 in (2,278 × 1,134 × 35 mm), 71.2 lb (32.3 kg).

What fire rating does it have?

UL 61730 fire rating Type 29 per datasheet.

Sources

California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
Aptos Solar — datasheet Datasheets – DG.
Aptos Solar — datasheet DNA-144-BF10-550W-DG 550W | 545W | 540W.
LONGi — manufacturer datasheet “LR5-72HBD Suitable for distributed projects Advanced module technology delivers superior”.
Canadian Solar — datasheet BiHiKu6 BIFACIAL MONO PERC CS6W-520|525|530|535|540|545|550MB-AG.
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 inverter library (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), 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).