40.9″ · 1,038 mm wide · 1.38″ (35 mm) frame

Solar panelMission Solar Energy

Mission Solar Energy TXS6-365120BB

Name: Mission Solar Energy TXS6-365120BB
Brand: Mission Solar Energy

120 half-cut cells, PERC. Power classes 350–375 W in the CEC list.

CEC listed · Jun 11, 2021UL 6173025-yr product + 25-yr performance warrantyPERCSeen in 1 SoCal permit

Power class

Power (STC)365 WCEC nameplate
Efficiency≈20.0%calculated from area
%/°C Pmax−0.334CEC listing test
Degradation / yr0.5%after year 1 (warranty)

Power classes

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

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
TXS6-350120BB	350 W	40.20	11.04	33.40	10.48	≈19.2%	327 W	Jun 11, 2021
TXS6-355120BB	355 W	40.40	11.14	33.60	10.57	≈19.5%	331 W	Jun 11, 2021
TXS6-360120BB	360 W	40.60	11.24	33.80	10.66	≈19.8%	336 W	Jun 11, 2021
TXS6-365120BB	365 W	40.80	11.33	34.00	10.74	≈20.0%	341 W	Jun 11, 2021
TXS6-370120BB	370 W	41.00	11.42	34.20	10.82	≈20.3%	346 W	Jun 11, 2021
TXS6-375120BB	375 W	41.20	11.51	34.40	10.91	≈20.6%	350 W	Jun 11, 2021

≈ efficiency = Pmax ÷ panel area 1.822 m² (datasheet size).

Build & dimensions

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

Dimensions69.1 × 40.9 × 1.38 in1,755 × 1,038 × 35 mm
Module area1.82 m² (19.6 ft²)length × width
Cells120 half-cut cellsPERC
Back coverBlack backsheet
Junction boxIP 68, 3 Diodes
Cable / connectorTemperature 20°C,AM 1.5,Wind Speed 1m/s4mm ; 1,200mm · MC4-compatible

Heat & cold behaviour

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

	Datasheet	CEC listing test
Pmax coefficient γ	—	−0.334 %/°C
Voc coefficient β	—	−0.263 %/°C
Isc coefficient α	+0.05 %/°C	+0.048 %/°C
Vmp coefficient	≈ −0.38 %/°C	—
Operating cell temperature	NMOT 44 ± 2 °C	NOCT 45.6 °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
350 W	259.9 W	31.59 V × 8.23 A	65 W	93%
355 W	263.7 W	31.78 V × 8.3 A	65.9 W	93%
360 W	267.5 W	31.97 V × 8.37 A	66.9 W	93%
365 W	271.1 W	32.16 V × 8.43 A	67.8 W	93%
370 W	274.8 W	32.34 V × 8.49 A	68.7 W	93%
375 W	278.7 W	32.53 V × 8.57 A	69.7 W	93%

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

Electrical & strength ratings

Max system voltage1,500 V
Max series fuse20 A
Fire rating (UL 61730)Type 1
Design load push / pull113 psf5,400 Pa
Module temperature−40 °F to +185 °F−40 °C to +85 °C

Certifications

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

UL 61730IEC 61215IEC 61730Fire rating Type 1 (UL 61730)

UL 61730CEC listing
IEC 61215datasheet
IEC 61730datasheet
Fire rating Type 1 (UL 61730)datasheet

Warranty & degradation

Mission Solar Energy datasheet

Product warranty25 years
Performance warranty25 years
Then≤ 0.5% / year

Independent reliability testing

Kiwa PVEL Scorecard · RETC PV Module Index

PVEL Scorecards

Mission Solar Energy named Top Performer, 2024–2025

RETC PV Module Index

Mission Solar Energy recognized 2023–2026

This exact series is not listed in published PVEL Top Performer tables. Results below are for the manufacturer.

RETC PV Module Index — Mission Solar Energy

Year	Recognition
2023	High Achievement in Performance (Module efficiency)
2024	Test Category High Achiever
2025	Performance High Achiever
2026	Performance discipline high achiever (Iam, Lid); Quality discipline high achiever (BOM verification); Test Category High Achiever

Inverter compatibility & string sizing

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · NLR PVWatts v8 · inverter datasheets · NLR SAM inverter library · CEC Grid Support Inverter List (Oct 7, 2026)

CityColdest air, °CHottest cell, °CString inverter

43.3 V

Voc when cold

per panel

27.7 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. β is the CEC-measured coefficient; NEC 690.7 calculations use the datasheet value.

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	3–13
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	43.3 / 27.7 V	⚠ Works; below MPPT at peak heat	1.26
Enphase IQ8X-80-M-US	320–540 W	79.5 V	43–60 V	43.3 / 27.7 V	✗ Not a match: module voltage below MPPT range	0.96
APsystems (Alt Power System) DS3-L	265–570 W	60 V	28–45 V	43.3 / 27.7 V	⚠ Works; below MPPT at peak heat	0.47
Enphase IQ8M-72-2-US	260–460 W	60 V	30–45 V	43.3 / 27.7 V	⚠ Works; below MPPT at peak heat	1.12
Enphase IQ8A-72-2-US	295–500 W	60 V	32–45 V	43.3 / 27.7 V	⚠ Works; below MPPT at peak heat	1.05

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	612	11,623	6.08
Palmdale	1,835	670	12,726	6.69
Chula Vista	1,696	619	11,762	6.11
Huntington Beach	1,643	600	11,394	5.89
Riverside	1,696	619	11,762	6.21
Santa Clarita	1,724	629	11,956	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 365 W panels

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

Panel	Pmax	Efficiency	γ Pmax (CEC)	Voc, V	Isc, A	PVEL (product / brand)	SoCal permits (series)
Mission Solar Energy TXS6-365120BB	365 W	≈20%	−0.334	40.8	11.33	brand 2×	1
LONGi LR4-60HPB-365M	365 W	≈20.6%	−0.339	41	11.41	product 2021, 2022	193
REC Group REC365AA	365 W	≈21.7%	−0.279	44.3	10.26	brand 9× (2016–2025)	30
Trina Solar TSM-365DE06X.05(II)	365 W	≈20.1%	−0.339	45	10.35	product 2022	23

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.

About Mission Solar Energy

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

ManufacturerMission Solar Energy
Listed in CEC asMission Solar Energy LLC
Websitemissionsolar.com
PVEL Top Performer (manufacturer)2 Scorecards (2024–2025)
RETC PV Module Index2023, 2024, 2025, 2026
Current panel series in CEC list38

Other series by SoCal permits

MSExxxSX9R · 4MSExxxSX5R · 2MSExxxHT0B · 1MSExxxSX6Z · 1TXS6-xxx144BB · 1MSExxxTS60 · 1

Questions & answers

How efficient is the Mission Solar Energy TXS6-365120BB?

Calculated from the panel area (1.82 m²): about 20% for the 365 W class. 365 W over 1.82 m² equals about 200 W per square meter.

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

PVWatts v8 with typical-year weather gives about 612 kWh per year per 365 W panel in Los Angeles and about 670 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.334 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 17.3% 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 = 43.3 V, Vmp at 74 °C cell = 27.7 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 (manufacturer datasheet).

Has this panel been reliability-tested?

This exact series is not in published PVEL Top Performer tables; Mission Solar Energy was named a Top Performer in 2 Scorecards (2024–2025).

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).
Mission Solar Energy — manufacturer datasheet “120BB 365W HC Series mSolar 9BB Half-Cell Black”.
Kiwa PVEL — PV Module Reliability Scorecard, Top Performer lists 2024–2025.
RETC — PV Module Index reports 2023–2026.
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 — Los Angeles County Public Works (EPIC-LA, unincorporated areas) (Oct 2025). Equipment matched from permit descriptions by model number.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).