Illustration · 132 half-cut cells

Solar panelMission Solar Energy

Mission Solar Energy MSN12-655HP3T

Name: Mission Solar Energy MSN12-655HP3T
Brand: Mission Solar Energy

132 half-cut cells. Power classes 635–680 W in the CEC list.

CEC listed · Dec 22, 2025UL 61730

Power class

Power (STC)655 WCEC nameplate
Efficiency≈21.3%calculated from area
%/°C Pmax−0.309CEC listing test
PTC / STC94.9%PTC 622 W (CEC)

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · 10 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
MSN12-635HP3T	635 W	44.60	18.11	37.10	17.12	≈20.6%	602 W	Dec 22, 2025
MSN12-640HP3T	640 W	44.80	18.17	37.30	17.17	≈20.8%	607 W	Dec 22, 2025
MSN12-645HP3T	645 W	45.00	18.22	37.50	17.21	≈20.9%	612 W	Dec 22, 2025
MSN12-650HP3T	650 W	45.20	18.27	37.70	17.25	≈21.1%	617 W	Dec 22, 2025
MSN12-655HP3T	655 W	45.40	18.32	37.90	17.29	≈21.3%	622 W	Dec 22, 2025
MSN12-660HP3T	660 W	45.60	18.37	38.10	17.33	≈21.4%	627 W	Dec 22, 2025
MSN12-665HP3T	665 W	45.80	18.42	38.30	17.37	≈21.6%	632 W	Dec 22, 2025
MSN12-670HP3T	670 W	46.00	18.47	38.50	17.42	≈21.8%	636 W	Dec 22, 2025
MSN12-675HP3T	675 W	46.20	18.52	38.70	17.45	≈21.9%	641 W	Dec 22, 2025
MSN12-680HP3T	680 W	46.40	18.57	38.90	17.49	≈22.1%	646 W	Dec 22, 2025

≈ efficiency = Pmax ÷ CEC-listed area 3.08 m².

Build & dimensions

CEC PV Module List (Oct 7, 2026)

Module area3.08 m² (33.2 ft²)CEC-listed area
Cells132 half-cut cells
Back coverTransparent backsheet

Heat & cold behaviour

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

	CEC listing test
Pmax coefficient γ	−0.309 %/°C
Voc coefficient β	−0.415 %/°C
Isc coefficient α	+0.051 %/°C
Operating cell temperature	NOCT 42.4 °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
635 W	466.4 W	34.78 V × 13.41 A	120.9 W	95%
640 W	470.3 W	34.96 V × 13.45 A	121.9 W	95%
645 W	473.9 W	35.15 V × 13.48 A	122.8 W	95%
650 W	477.5 W	35.34 V × 13.51 A	123.8 W	95%
655 W	481.2 W	35.53 V × 13.54 A	124.7 W	95%
660 W	484.8 W	35.71 V × 13.58 A	125.6 W	95%
665 W	488.5 W	35.9 V × 13.61 A	126.6 W	95%
670 W	492.5 W	36.09 V × 13.65 A	127.6 W	95%
675 W	495.9 W	36.28 V × 13.67 A	128.5 W	95%
680 W	499.6 W	36.46 V × 13.7 A	129.5 W	95%

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

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

49.7 V

Voc when cold

per panel

31.2 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	2–12
Solis (Ginlong) S6-EH1P10K-H-US	600 V	80–520 V	datasheet	3–12
Solis (Ginlong) Solis-1P7.6K-4G-US	600 V	100–500 V	datasheet	4–12
Qcells Q.VOLT H7.6SX	498 V	234–498 V	CEC test window	8–10

Microinverters (one per panel)

No microinverter in the reference set lists this power class in its recommended module power range.

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	1,098	12,076	6.08
Palmdale	1,835	1,202	13,221	6.69
Chula Vista	1,696	1,111	12,220	6.11
Huntington Beach	1,643	1,076	11,838	5.89
Riverside	1,696	1,111	12,220	6.21
Santa Clarita	1,724	1,129	12,421	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 655 W panels

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

Panel	Pmax	Efficiency	γ Pmax (CEC)	Voc, V	Isc, A	PVEL (product / brand)
Mission Solar Energy MSN12-655HP3T	655 W	≈21.3%	−0.309	45.4	18.32	brand 2×
Canadian Solar CS7N-655MB-AG	655 W	≈21.3%	−0.390	45.2	18.43	product 2024
Hyundai Energy Solutions HiN-T650NJ	650 W	≈23.5%	−0.273	56.7	14.51	brand 5× (2017–2025)
JinkoSolar JKM650N-66HL4M-BDV	650 W	≈24.1%	−0.299	50.28	16.44	product 2025

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 MSN12-655HP3T?

Calculated from the panel area (3.08 m²): about 21.3% for the 655 W class. 655 W over 3.08 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 1,098 kWh per year per 655 W panel in Los Angeles and about 1,202 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.309 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 16% 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 2–12 panels per string (Voc at 2 °C = 49.7 V, Vmp at 74 °C cell = 31.2 V). Final design must follow the inverter manual and NEC 690.7.

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).

Sources

California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
Hyundai Energy Solutions — datasheet [US] NJ(HiN) Series (N TOPCon Bifacial) 640~645W.
JinkoSolar — datasheet THE MOST DEPENDABLE SOLAR PRODUCT.
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 — 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).