40″ · 1,016 mm wide · 1.18″ (30 mm) frame · 45.2 lb (20.5 kg)

Solar panelPanasonic

Panasonic EVPV400H

Name: Panasonic EVPV400H
Brand: Panasonic

132 half-cut cells, N-type HJT. Power classes 390–410 W in the CEC list; datasheet covers 400–410 W.

CEC listed · Apr 11, 2022UL 61730N-type HJTInstalled in 14 SoCal permits

Power class

Power (STC)400 Wtolerance +10 / −0 W
Efficiency≥21.6%datasheet minimum
%/°C Pmax−0.26CEC test: −0.257
Degradation / yr0.25%after year 1 (warranty)

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · Panasonic datasheet · 3 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
EVPV390H	390 W	48.60	10.19	41.50	9.40	≈21.1%	372 W	Apr 11, 2022
EVPV400H	400 W	48.80	10.25	42.10	9.51	≥21.6%	382 W	Apr 11, 2022
EVPV410H	410 W	49.00	10.35	42.70	9.61	≥22.2%	392 W	Apr 11, 2022

≈ efficiency = Pmax ÷ panel area 1.85 m² (datasheet size) for classes outside the datasheet.

Build & dimensions

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

Dimensions71.7 × 40 × 1.18 in1,821 × 1,016 × 30 mm
Module area1.85 m² (19.9 ft²)length × width
Weight45.2 lb (20.5 kg)
Cells132 half-cut cellsN-type HJT
Back coverWhite backsheet
Junction boxin accordance with IEC 62790
Cable / connectorStäubli MC4 PV-KBT4/KST4 (4 mm²)

Heat & cold behaviour

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

	Datasheet	CEC listing test
Pmax coefficient γ	−0.26 %/°C	−0.257 %/°C
Voc coefficient β	−0.24 %/°C	−0.229 %/°C
Isc coefficient α	—	+0.037 %/°C
Vmp coefficient	≈ −0.29 %/°C	—
Operating cell temperature	NMOT 44 °C	NOCT 44 °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
390 W	284.8 W	38.64 V × 7.37 A	70.3 W	90%
400 W	292.3 W	39.19 V × 7.46 A	72.1 W	90%
410 W	299.6 W	39.75 V × 7.54 A	73.9 W	90%

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 fuse25 A
Module temperature−40 °F to +185 °F−40 °C to +85 °C
Power tolerance+10 / −0 W

Certifications

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

UL 61730IEC 61215IEC 61701IEC 62716IEC 62804IEC 62790IEC 62852

UL 61730CEC listing
IEC 61215datasheet
IEC 61701datasheet
IEC 62716datasheet
IEC 62804datasheet
IEC 62790datasheet
IEC 62852datasheet

Warranty & degradation

Panasonic datasheet · Cali-Graf calculation

Year 1≥ 98%
Then≤ 0.25% / year
Year 10≥ 95.75%calculated from warranty terms
Year 25≥ 92%

Inverter compatibility & string sizing

Panasonic 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

51.5 V

Voc when cold

per panel

36 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	3–11
Qcells Q.VOLT H7.6SX	498 V	234–498 V	CEC test window	7–9

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	51.5 / 36 V	✓ Within range	1.38
Enphase IQ8X-80-M-US	320–540 W	79.5 V	43–60 V	51.5 / 36 V	✗ Not a match: module voltage below MPPT range	1.05
APsystems (Alt Power System) DS3-L	265–570 W	60 V	28–45 V	51.5 / 36 V	✓ Within range	0.51
Enphase IQ8M-72-2-US	260–460 W	60 V	30–45 V	51.5 / 36 V	✓ Within range	1.23
Enphase IQ8A-72-2-US	295–500 W	60 V	32–45 V	51.5 / 36 V	✓ Within range	1.15

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	670	12,067	6.08
Palmdale	1,835	734	13,212	6.69
Chula Vista	1,696	678	12,211	6.11
Huntington Beach	1,643	657	11,830	5.89
Riverside	1,696	678	12,211	6.21
Santa Clarita	1,724	690	12,413	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.

Who installs EVPVxxxH panels in SoCal

building permits

Permits naming this series

Aug 2022 – Aug 2024

Jurisdictions so far

LA County (unincorp.) (14)

Permits over time

Power class named in permit

400 W

410 W

Top ZIP codes

ZIP 902743
ZIP 906042
ZIP 917452
ZIP 910012
ZIP 910062
Other ZIP codes3

Typical system

median 6 kW, 15 panels (n = 10)

Only installer and ZIP level is shown — no homeowner names, street addresses or permit numbers. Permits from LA County (unincorp.) come without a contractor license, so they count toward totals but not toward installers. Counts grow as more permit portals are loaded.

Installed together with

building permits

Microinverters

Enphase IQ8M

Batteries

Tesla Powerwall 3

Number of permits naming both this panel series and the product; 14 of 14 permits list other equipment.

Compare with similar 400 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)
Panasonic EVPV400H	400 W	≥21.6%	−0.257	48.8	10.25	—	14
Qcells Q.PEAK DUO BLK ML-G10+ 400	400 W	≥20.4%	−0.362	45.3	11.14	product 2022, 2023	221
JA Solar JAM54S31-400/MR	400 W	≈21.1%	−0.329	37.07	13.79	product 2023, 2024	152
REC Group REC400AA Pure	400 W	≈22.3%	−0.256	48.8	10.25	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 Panasonic EVPV400H?

The Panasonic datasheet guarantees at least 21.6% module efficiency for the 400 W class (up to 22.2% for 410 W). 400 W over 1.85 m² equals about 216 W per square meter.

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

PVWatts v8 with typical-year weather gives about 670 kWh per year per 400 W panel in Los Angeles and about 734 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.26 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 13.5% 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 = 51.5 V, Vmp at 74 °C cell = 36 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 51.5 V vs max input 60 V; Vmp when hot 36 V vs MPPT low 29 V; recommended module power 235–440 W. Confirm on the microinverter maker’s compatibility list.

How big and heavy is it?

71.7 × 40 × 1.18 in (1,821 × 1,016 × 30 mm), 45.2 lb (20.5 kg).

Sources

California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
Panasonic — manufacturer datasheet “EVERVOLT® SOLAR MODULE SERIES The Panasonic Advantage”.
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 — Los Angeles County Public Works (EPIC-LA, unincorporated areas) (Aug 2022 – Aug 2024). 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).