39.4″ · 1,002 mm wide · 1.57″ (40 mm) frame · 50.7 lb (23 kg)

Solar panelAXITEC

AXITEC AC-380MH/144S

Name: AXITEC AC-380MH/144S
Brand: AXITEC

144 half-cut cells. Power classes 355–410 W in the CEC list; datasheet covers 390–410 W.

CEC listed · Aug 15, 2019UL 170315-yr product + 25-yr performance warranty

Power class

Power (STC)380 Wtolerance +5 / −0 W
Efficiency≥19.1%datasheet minimum
%/°C Pmax−0.39CEC test: −0.352
Output at year 2585%performance warranty

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · AXITEC datasheet · 12 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
AC-355MH/144S	355 W	46.82	9.60	39.01	9.10	≈17.6%	329 W	Aug 15, 2019
AC-360MH/144S	360 W	47.01	9.69	39.20	9.18	≈17.9%	334 W	Aug 15, 2019
AC-365MH/144S	365 W	47.21	9.77	39.39	9.27	≈18.1%	338 W	Aug 15, 2019
AC-370MH/144S	370 W	47.40	9.85	39.60	9.35	≥18.6%	343 W	Aug 15, 2019
AC-375MH/144S	375 W	47.61	9.93	39.81	9.43	≥18.9%	348 W	Aug 15, 2019
AC-380MH/144S	380 W	47.80	10.01	40.02	9.50	≥19.1%	353 W	Aug 15, 2019
AC-385MH/144S	385 W	48.00	10.08	40.21	9.58	≥19.4%	358 W	Aug 15, 2019
AC-390MH/144S	390 W	48.18	10.48	40.37	9.66	≈19.4%	364 W	Jan 13, 2020
AC-395MH/144S	395 W	48.37	10.56	40.55	9.74	≈19.6%	369 W	Jan 13, 2020
AC-400MH/144S	400 W	48.55	10.64	40.77	9.81	≈19.9%	374 W	Jan 13, 2020
AC-405MH/144S	405 W	48.73	10.71	40.95	9.89	≈20.1%	379 W	Jan 13, 2020
AC-410MH/144S	410 W	48.91	10.79	41.12	9.97	≈20.4%	383 W	Jan 13, 2020

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

Build & dimensions

AXITEC datasheet · Cali-Graf calculation

Dimensions79.1 × 39.4 × 1.57 in2,008 × 1,002 × 40 mm
Module area2.01 m² (21.7 ft²)length × width
Weight50.7 lb (23 kg)
Cells144 half-cut cells
Back coverComposite film
Frame1.57 inch (40 mm) silver aluminium frame

Heat & cold behaviour

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

	Datasheet	CEC listing test
Pmax coefficient γ	−0.39 %/°C	−0.352 %/°C
Voc coefficient β	−0.29 %/°C	−0.275 %/°C
Isc coefficient α	+0.04 %/°C	+0.042 %/°C
Vmp coefficient	≈ −0.43 %/°C	—
Operating cell temperature	NMOT 45 °C	NOCT 45.8 °C

Vmp coefficient ≈ γ − α (datasheet); 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
355 W	256.6 W	35.83 V × 7.16 A	66.3 W	93%
360 W	260.1 W	36.01 V × 7.22 A	67.2 W	93%
365 W	263.9 W	36.18 V × 7.3 A	68.2 W	93%
370 W	267.6 W	36.37 V × 7.36 A	69.1 W	93%
375 W	271.4 W	36.57 V × 7.42 A	70.1 W	93%
380 W	274.8 W	36.76 V × 7.48 A	71 W	93%
385 W	278.4 W	36.93 V × 7.54 A	71.9 W	93%
390 W	292.9 W	37.33 V × 7.85 A	75 W	96%
395 W	296.6 W	37.5 V × 7.91 A	76 W	96%
400 W	300.4 W	37.7 V × 7.97 A	77 W	96%
405 W	304.2 W	37.87 V × 8.03 A	77.9 W	96%
410 W	307.9 W	38.03 V × 8.1 A	78.9 W	96%

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

Electrical & strength ratings

AXITEC datasheet

Max system voltage1,000 V (UL)
Max reverse current20 A
Fire rating (UL 61730)Type 1
Power tolerance+5 / −0 W

Packaging: 25 per pallet

Certifications

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

UL 1703IEC 61730Fire rating Type 1 (UL 61730)

UL 1703CEC listing
IEC 61730datasheet
Fire rating Type 1 (UL 61730)datasheet

Warranty & degradation

AXITEC datasheet

Product warranty15 years
Performance warranty25 years
Year 25≥ 85%

Inverter compatibility & string sizing

AXITEC 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 V

Voc when cold

per panel

31.6 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 / 31.6 V	✓ Within range	1.31
Enphase IQ8X-80-M-US	320–540 W	79.5 V	43–60 V	51 / 31.6 V	✗ Not a match: module voltage below MPPT range	1
APsystems (Alt Power System) DS3-L	265–570 W	60 V	28–45 V	51 / 31.6 V	✓ Within range	0.49
Enphase IQ8M-72-2-US	260–460 W	60 V	30–45 V	51 / 31.6 V	✓ Within range	1.17
Enphase IQ8A-72-2-US	295–500 W	60 V	32–45 V	51 / 31.6 V	⚠ Works; below MPPT at peak heat	1.09

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	637	11,464	6.08
Palmdale	1,835	697	12,551	6.69
Chula Vista	1,696	644	11,601	6.11
Huntington Beach	1,643	624	11,238	5.89
Riverside	1,696	644	11,601	6.21
Santa Clarita	1,724	655	11,792	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 380 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)
AXITEC AC-380MH/144S	380 W	≥19.1%	−0.352	47.8	10.01	—	—
Qcells Q.PEAK DUO BLK ML-G10+ 380	380 W	≈19.4%	−0.362	45.16	11.01	product 2022, 2023	221
JA Solar JAM54S31-385/MR	385 W	≈20.3%	−0.329	36.71	13.52	product 2023, 2024	152
REC Group REC380AA Pure	380 W	≈21.2%	−0.256	48.4	10.17	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.

Questions & answers

How efficient is the AXITEC AC-380MH/144S?

The AXITEC datasheet guarantees at least 19.1% module efficiency for the 380 W class (up to 19.4% for 385 W). 380 W over 2.01 m² equals about 189 W per square meter.

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

PVWatts v8 with typical-year weather gives about 637 kWh per year per 380 W panel in Los Angeles and about 697 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.39 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 20.2% 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 V, Vmp at 74 °C cell = 31.6 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 V vs max input 60 V; Vmp when hot 31.6 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?

15 years on the product and 25 years on performance: at least 85% after 25 years (manufacturer datasheet).

How big and heavy is it?

79.1 × 39.4 × 1.57 in (2,008 × 1,002 × 40 mm), 50.7 lb (23 kg).

What fire rating does it have?

UL 61730 fire rating Type 1 per datasheet.

Sources

California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
AXITEC — manufacturer datasheet “AC-285M/156-60S AC-290M/156-60S 390–410 Wp AC-295M/156-60S”.
AXITEC — manufacturer datasheet “AC-285M/156-60S AC-290M/156-60S 370–385 Wp AC-295M/156-60S”.
Qcells — manufacturer datasheet “Q.PEAK DUO BLK ML-G10+ ENDURING HIGH PERFORMANCE”.
Kiwa PVEL — PV Module Reliability Scorecard, Top Performer lists.
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), 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).