41.5″ · 1,054 mm wide · 1.57″ (40 mm) frame · 44.8 lb (20.3 kg)

Solar panelMission Solar Energy

Mission Solar Energy MSE345SX5T

Name: Mission Solar Energy MSE345SX5T
Brand: Mission Solar Energy

60 cells, P-type PERC. Power classes 330–350 W in the CEC list; datasheet covers 330–345 W.

CEC listed · Feb 11, 2021UL 61730P-type PERC

Power class

Power (STC)345 WCEC nameplate
Efficiency≥18.7%datasheet minimum
%/°C Pmax−0.36CEC test: −0.361
Degradation / yr0.7%after year 1 (warranty)

Power classes

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

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
MSE330SX5T	330 W	40.40	10.72	32.85	10.05	≥17.9%	307 W	Feb 11, 2021
MSE335SX5T	335 W	40.58	10.78	33.03	10.14	≥18.2%	312 W	Feb 11, 2021
MSE340SX5T	340 W	40.82	10.86	33.20	10.24	≥18.5%	317 W	Feb 11, 2021
MSE345SX5T	345 W	41.00	10.92	33.37	10.34	≥18.7%	321 W	Feb 11, 2021
MSE350SX5T	350 W	41.18	10.97	33.52	10.44	≈19.0%	326 W	Jun 11, 2021

≈ efficiency = Pmax ÷ panel area 1.842 m² (datasheet size) for classes outside the datasheet.

Build & dimensions

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

Dimensions68.8 × 41.5 × 1.57 in1,748 × 1,054 × 40 mm
Module area1.84 m² (19.8 ft²)length × width
Weight44.8 lb (20.3 kg)
Cells60 cellsP-type PERC
Front glass3.2mm, tempered, low-iron, anti-reflective
Back coverBlack backsheet
FrameAnodized
Junction boxProtection class IP67 with 3 bypass-diodes
Cable / connector1.0m, Wire 4mm2(12AWG) · Stäubli MC4, Renhe 05-8

Heat & cold behaviour

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

	Datasheet	CEC listing test
Pmax coefficient γ	−0.36 %/°C	−0.361 %/°C
Voc coefficient β	−0.26 %/°C	−0.262 %/°C
Isc coefficient α	+0.04 %/°C	+0.039 %/°C
Vmp coefficient	≈ −0.40 %/°C	—
Operating cell temperature	NMOT 44 °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
330 W	255 W	30.83 V × 8.27 A	66.8 W	101%
335 W	258.7 W	31 V × 8.34 A	67.8 W	101%
340 W	262.6 W	31.16 V × 8.43 A	68.8 W	101%
345 W	266.5 W	31.32 V × 8.51 A	69.9 W	101%
350 W	270.3 W	31.46 V × 8.59 A	70.9 W	101%

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

Electrical & strength ratings

Max system voltage1,000 V
Max series fuse20 A
Fire rating (UL 61730)Type 1

Certifications

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

UL 61730IEC 61215IEC 61730IEC 61701Fire rating Type 1 (UL 61730)

UL 61730CEC listing
IEC 61215datasheet
IEC 61730datasheet
IEC 61701datasheet
Fire rating Type 1 (UL 61730)datasheet

Warranty & degradation

Mission Solar Energy datasheet

Product warranty12 years
Then≤ 0.7% / year
Year 25≥ 80.7%

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

Mission Solar Energy 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

43.5 V

Voc when cold

per panel

26.8 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	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	43.5 / 26.8 V	⚠ Works; below MPPT at peak heat	1.19
Enphase IQ8X-80-M-US	320–540 W	79.5 V	43–60 V	43.5 / 26.8 V	✗ Not a match: module voltage below MPPT range	0.91
APsystems (Alt Power System) DS3-L	265–570 W	60 V	28–45 V	43.5 / 26.8 V	⚠ Works; below MPPT at peak heat	0.44
Enphase IQ8M-72-2-US	260–460 W	60 V	30–45 V	43.5 / 26.8 V	⚠ Works; below MPPT at peak heat	1.06
Enphase IQ8A-72-2-US	295–500 W	60 V	32–45 V	43.5 / 26.8 V	⚠ Works; below MPPT at peak heat	0.99

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	578	11,564	6.08
Palmdale	1,835	633	12,662	6.69
Chula Vista	1,696	585	11,702	6.11
Huntington Beach	1,643	567	11,337	5.89
Riverside	1,696	585	11,702	6.21
Santa Clarita	1,724	595	11,896	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 345 W panels

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

Panel	Pmax	Efficiency	γ Pmax (CEC)	Voc, V	Isc, A	PVEL (product / brand)	SoCal permits (series)
Mission Solar Energy MSE345SX5T	345 W	≥18.7%	−0.361	41	10.92	brand 2×	—
LONGi LR4-60HPB-345M	345 W	≈19.5%	−0.339	40.2	11.06	product 2021, 2022	193
JinkoSolar JKM345M-60HBL	345 W	≈20.4%	−0.406	41.2	10.91	brand 12× (2014–2026)	45
REC Group REC345AA	345 W	≈20.5%	−0.279	43.4	10.12	brand 9× (2016–2025)	30

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-xxx120BB · 1TXS6-xxx144BB · 1

Questions & answers

How efficient is the Mission Solar Energy MSE345SX5T?

The Mission Solar Energy datasheet guarantees at least 18.7% module efficiency for the 345 W class. 345 W over 1.84 m² equals about 187 W per square meter.

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

PVWatts v8 with typical-year weather gives about 578 kWh per year per 345 W panel in Los Angeles and about 633 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 18.7% 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 = 43.5 V, Vmp at 74 °C cell = 26.8 V). Final design must follow the inverter manual and NEC 690.7.

What does the warranty cover?

12 years on the product: at least 80.7% after 25 years (manufacturer datasheet).

How big and heavy is it?

68.8 × 41.5 × 1.57 in (1,748 × 1,054 × 40 mm), 44.8 lb (20.3 kg).

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 “AMERICA'S MODULE COMPANY TM MSE MSEPERC 60”.
Mission Solar Energy — manufacturer datasheet “MSE PERC 60 Positive Power”.
JinkoSolar — datasheet THE MOST DEPENDABLE SOLAR BRAND.
JinkoSolar — manufacturer datasheet “Eagle HC 60M G2 315-335 Watt MONO PERC HALF CELL MODULE”.
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 — 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).