39.4″ · 1,002 mm wide · 1.38″ (35 mm) frame · 45.6 lb (20.7 kg)

Solar panelAXITEC

AXITEC AC-330MH/120V

Name: AXITEC AC-330MH/120V
Brand: AXITEC

120 half-cut cells. Power classes 305–375 W in the CEC list.

CEC listed · Aug 15, 2019UL 170325-yr product + 25-yr performance warranty

Power class

Power (STC)330 Wtolerance +5 / −0 W
Efficiency≈19.6%calculated from area
%/°C Pmax−0.36CEC test: −0.348
Output at year 2585%performance warranty

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · 14 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
AC-305MH/120V	305 W	39.42	9.86	32.37	9.42	≈18.1%	283 W	Aug 15, 2019
AC-310MH/120V	310 W	39.58	9.95	32.58	9.51	≈18.4%	288 W	Aug 15, 2019
AC-315MH/120V	315 W	39.74	10.04	32.79	9.60	≈18.7%	293 W	Aug 15, 2019
AC-320MH/120V	320 W	39.92	10.13	33.01	9.69	≈19.0%	298 W	Aug 15, 2019
AC-325MH/120V	325 W	40.10	10.43	32.71	9.93	≈19.3%	304 W	Jan 13, 2020
AC-330MH/120V	330 W	40.27	10.51	32.91	10.02	≈19.6%	308 W	Jan 13, 2020
AC-335MH/120V	335 W	40.44	10.60	33.11	10.11	≈19.9%	313 W	Jan 13, 2020
AC-340MH/120V	340 W	40.62	10.69	33.31	10.21	≈20.1%	318 W	Jan 13, 2020
AC-350MH/120V	350 W	40.10	11.15	33.60	10.42	≈20.7%	323 W	Sep 13, 2021
AC-355MH/120V	355 W	40.30	11.25	33.80	10.51	≈21.0%	328 W	Sep 13, 2021
AC-360MH/120V	360 W	40.50	11.35	34.00	10.59	≈21.3%	332 W	Sep 13, 2021
AC-365MH/120V	365 W	40.70	11.43	34.20	10.68	≈21.6%	337 W	Sep 13, 2021
AC-370MH/120V	370 W	40.90	11.52	34.40	10.76	≈21.9%	342 W	Sep 13, 2021
AC-375MH/120V	375 W	41.10	11.60	34.60	10.84	≈22.2%	346 W	Sep 13, 2021

≈ efficiency = Pmax ÷ panel area 1.687 m² (datasheet size).

Build & dimensions

AXITEC datasheet · Cali-Graf calculation

Dimensions66.3 × 39.4 × 1.38 in1,684 × 1,002 × 35 mm
Module area1.69 m² (18.2 ft²)length × width
Weight45.6 lb (20.7 kg)
Cells120 half-cut cells
Back coverComposite film
Frame1.38 inch (35 mm) black aluminium frame

Heat & cold behaviour

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

	Datasheet	CEC listing test
Pmax coefficient γ	−0.36 %/°C	−0.348 %/°C
Voc coefficient β	−0.26 %/°C	−0.267 %/°C
Isc coefficient α	+0.04 %/°C	+0.043 %/°C
Vmp coefficient	≈ −0.40 %/°C	—
Operating cell temperature	NMOT 45 °C	NOCT 44.4 °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
305 W	221 W	30.06 V × 7.35 A	56.9 W	93%
310 W	224.6 W	30.26 V × 7.42 A	57.8 W	93%
315 W	228.2 W	30.45 V × 7.49 A	58.8 W	93%
320 W	231.9 W	30.66 V × 7.56 A	59.7 W	93%
325 W	243 W	31.17 V × 7.8 A	62.5 W	96%
330 W	246.7 W	31.36 V × 7.87 A	63.5 W	96%
335 W	250.5 W	31.55 V × 7.94 A	64.5 W	96%
340 W	254.5 W	31.74 V × 8.02 A	65.5 W	96%
350 W	262.7 W	31.23 V × 8.41 A	67.7 W	97%
355 W	266.6 W	31.41 V × 8.49 A	68.7 W	97%
360 W	270.2 W	31.6 V × 8.55 A	69.7 W	97%
365 W	274.1 W	31.78 V × 8.62 A	70.7 W	97%
370 W	277.7 W	31.97 V × 8.69 A	71.6 W	97%
375 W	281.4 W	32.16 V × 8.75 A	72.6 W	97%

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 voltage1,500 V
Max reverse current20 A
Fire rating (UL 61730)Type 1
Power tolerance+5 / −0 W

Packaging: 31 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 warranty25 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

42.7 V

Voc when cold

per panel

26.4 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	3–14
Solis (Ginlong) S6-EH1P10K-H-US	600 V	80–520 V	datasheet	4–14
Solis (Ginlong) Solis-1P7.6K-4G-US	600 V	100–500 V	datasheet	4–14
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	42.7 / 26.4 V	⚠ Works; below MPPT at peak heat	1.14
Enphase IQ8X-80-M-US	320–540 W	79.5 V	43–60 V	42.7 / 26.4 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	42.7 / 26.4 V	⚠ Works; below MPPT at peak heat	0.42
Enphase IQ8M-72-2-US	260–460 W	60 V	30–45 V	42.7 / 26.4 V	⚠ Works; below MPPT at peak heat	1.02
Enphase IQ8A-72-2-US	295–500 W	60 V	32–45 V	42.7 / 26.4 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	Warranty	PVEL (product / brand)	SoCal permits (series)
AXITEC AC-330MH/120V	330 W	≈19.6%	−0.348	40.27	10.51	66.3 × 39.4 in	25 / 25 yr	—	—
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	10 / 25 yr	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	25 / 25 yr	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.

Questions & answers

How efficient is the AXITEC AC-330MH/120V?

Calculated from the panel area (1.69 m²): about 19.6% for the 330 W class. 330 W over 1.69 m² equals about 196 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 3–14 panels per string (Voc at 2 °C = 42.7 V, Vmp at 74 °C cell = 26.4 V). Final design must follow the inverter manual and NEC 690.7.

What does the warranty cover?

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

How big and heavy is it?

66.3 × 39.4 × 1.38 in (1,684 × 1,002 × 35 mm), 45.6 lb (20.7 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 “320–330 Wp AXIblackpremium X HC High performance solar module”.
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”.
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).