Illustration · 144 half-cut cells

Solar panelWaaree

Waaree WSMD 405

Name: Waaree WSMD 405
Brand: Waaree

144 half-cut cells, PERC. Power classes 380–545 W in the CEC list; datasheet covers 520–550 W.

CEC listed · Jun 11, 2021UL 6173012-yr product + 27-yr performance warrantyPERC

Power class

Power (STC)405 WCEC nameplate
Efficiency≈20.2%calculated from area
%/°C Pmax−0.34CEC test: −0.312
Performance warranty27 yrdatasheet

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · Waaree datasheet · 18 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
WSMD-380	380 W	48.14	10.16	39.07	9.73	≈19.0%	354 W	Jun 11, 2021
WSMD-385	385 W	48.45	10.22	39.32	9.80	≈19.2%	358 W	Jun 11, 2021
WSMD-390	390 W	48.76	10.29	39.56	9.87	≈19.5%	363 W	Jun 11, 2021
WSMD-395	395 W	49.07	10.35	39.81	9.93	≈19.8%	368 W	Jun 11, 2021
WSMD-400	400 W	49.39	10.42	40.07	9.99	≈20.0%	373 W	Jun 11, 2021
WSMD-405	405 W	49.71	10.49	40.33	10.05	≈20.2%	377 W	Jun 11, 2021
WSMD-430	430 W	49.39	11.19	41.01	10.49	≈19.9%	403 W	Nov 1, 2022
WSMD-435	435 W	49.59	11.25	41.21	10.56	≈20.1%	408 W	Nov 1, 2022
WSMD-440	440 W	49.69	11.34	41.41	10.63	≈20.4%	412 W	Nov 1, 2022
WSMD-445	445 W	49.89	11.41	41.61	10.70	≈20.6%	417 W	Nov 1, 2022
WSMD-450	450 W	50.10	11.46	41.81	10.77	≈20.8%	422 W	Nov 1, 2022
WSMD-455	455 W	50.30	11.53	42.02	10.84	≈21.1%	427 W	Nov 1, 2022
WSMD-520	520 W	49.01	13.55	41.14	12.65	≥20.2%	485 W	Nov 21, 2022
WSMD-525	525 W	49.16	13.63	41.29	12.73	≥20.4%	490 W	Nov 21, 2022
WSMD-530	530 W	49.31	13.69	41.45	12.80	≥20.6%	494 W	Nov 21, 2022
WSMD-535	535 W	49.46	13.76	41.60	12.88	≥20.8%	499 W	Nov 21, 2022
WSMD-540	540 W	49.61	13.83	41.75	12.95	≥21.0%	504 W	Nov 21, 2022
WSMD-545	545 W	49.76	13.90	41.90	13.02	≥21.2%	509 W	Nov 21, 2022

≈ efficiency = Pmax ÷ CEC-listed area 2 m² for classes outside the datasheet.

Build & dimensions

CEC PV Module List (Oct 7, 2026) · Waaree datasheets

Module area2.16 m² (23.3 ft²)CEC-listed area
Cells144 half-cut cellsPERC
Back coverWhite backsheet

Heat & cold behaviour

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

	Datasheet	CEC listing test
Pmax coefficient γ	−0.34 %/°C	−0.312 %/°C
Voc coefficient β	−0.25 %/°C	−0.236 %/°C
Isc coefficient α	+0.05 %/°C	+0.026 %/°C
Vmp coefficient	≈ −0.39 %/°C	—
Operating cell temperature	NMOT 43 ± 2 °C	NOCT 47.7 °C

Vmp coefficient ≈ γ − α (datasheet); used only for the hot-roof voltage estimate.

At normal operating conditions (NOCT, 800 W/m²) — datasheet

Class	Pmax, W	Voc, V	Isc, A	Vmp, V	Imp, A
520 W	391.9	46.00	10.94	37.70	10.34
525 W	395.6	46.10	11.00	37.90	10.40
530 W	399.2	46.20	11.05	38.00	10.45
535 W	403.1	46.40	11.11	38.20	10.51
540 W	406.7	46.50	11.16	38.40	10.56
545 W	410.4	46.70	11.22	38.50	10.62

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
380 W	280 W	37.33 V × 7.5 A	73.2 W	96%
385 W	283.8 W	37.57 V × 7.55 A	74.2 W	96%
390 W	287.6 W	37.8 V × 7.61 A	75.2 W	96%
395 W	291.2 W	38.04 V × 7.65 A	76.1 W	96%
400 W	294.8 W	38.29 V × 7.7 A	77.1 W	96%
405 W	298.5 W	38.54 V × 7.75 A	78.1 W	96%
430 W	318.2 W	38.2 V × 8.33 A	81.9 W	95%
435 W	321.8 W	38.39 V × 8.38 A	82.9 W	95%
440 W	325.5 W	38.58 V × 8.44 A	83.8 W	95%
445 W	329.3 W	38.76 V × 8.49 A	84.8 W	95%
450 W	333 W	38.95 V × 8.55 A	85.8 W	95%
455 W	336.9 W	39.15 V × 8.61 A	86.8 W	95%
520 W	387.3 W	37.87 V × 10.23 A	99.9 W	96%
525 W	391.2 W	38.01 V × 10.29 A	100.9 W	96%
530 W	394.8 W	38.15 V × 10.35 A	101.8 W	96%
535 W	398.7 W	38.29 V × 10.41 A	102.8 W	96%
540 W	402.4 W	38.43 V × 10.47 A	103.8 W	96%
545 W	406 W	38.57 V × 10.53 A	104.7 W	96%

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 fuse25 A
Fire rating (UL 61730)Type 2
Module temperature−40 °F to +185 °F−40 °C to +85 °C

Certifications

CEC PV Module List (Oct 7, 2026) · Waaree datasheets

UL 61730IEC 61215IEC 61730IEC 62804Fire rating Type 2 (UL 61730)ISO 14001ISO 45001ISO 9001

UL 61730CEC listing
IEC 61215datasheet
IEC 61730datasheet
IEC 62804datasheet
Fire rating Type 2 (UL 61730)datasheet
ISO 14001factory, datasheet
ISO 45001factory, datasheet
ISO 9001factory, datasheet

Warranty & degradation

Waaree datasheet

Product warranty12 years
Performance warranty27 years

Independent reliability testing

Kiwa PVEL Scorecard · RETC PV Module Index

PVEL Scorecards

Waaree named Top Performer, 2022–2026

2025, 2026

RETC Overall Highest Achiever

Waaree, manufacturer level

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

RETC PV Module Index — Waaree

Year	Recognition
2024	Test Category High Achiever
2025	Overall Highest Achiever
2026	Overall Highest Achiever; High achievement in performance; High achievement in reliability; Performance discipline high achiever (Temperature coefficient, Iam, Letid); Quality discipline high achiever (BOM verification); Reliability discipline high achiever (Damp heat, Pid, Tc)

Inverter compatibility & string sizing

Waaree 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

52.6 V

Voc when cold

per panel

32.6 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	4–11
Qcells Q.VOLT H7.6SX	498 V	234–498 V	CEC test window	8–9

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	52.6 / 32.6 V	✓ Within range	1.4
Enphase IQ8X-80-M-US	320–540 W	79.5 V	43–60 V	52.6 / 32.6 V	✗ Not a match: module voltage below MPPT range	1.07
APsystems (Alt Power System) DS3-L	265–570 W	60 V	28–45 V	52.6 / 32.6 V	✓ Within range	0.52
Enphase IQ8M-72-2-US	260–460 W	60 V	30–45 V	52.6 / 32.6 V	✓ Within range	1.25
Enphase IQ8A-72-2-US	295–500 W	60 V	32–45 V	52.6 / 32.6 V	✓ Within range	1.16

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	679	11,539	6.08
Palmdale	1,835	743	12,634	6.69
Chula Vista	1,696	687	11,677	6.11
Huntington Beach	1,643	665	11,312	5.89
Riverside	1,696	687	11,677	6.21
Santa Clarita	1,724	698	11,870	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 405 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)
Waaree WSMD 405	405 W	≈20.2%	−0.312	49.71	10.49	brand 5×	—
Qcells Q.PEAK DUO BLK ML-G10+ 405	405 W	≥20.6%	−0.362	45.34	11.17	product 2022, 2023	221
JA Solar JAM54S31-405/MR	405 W	≈21.3%	−0.329	37.23	13.87	product 2023, 2024	152
REC Group REC405AA Pure	405 W	≈22.6%	−0.256	48.9	10.3	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.

Documents

manufacturer documents

PDF
ARKA SERIES WSMD-520-550 WEL-EPD-520-550-144-MP-HC-11-14.06.2024
Datasheet · Waaree · Jun 2026
PDF
Limited And Linear Warranty Of PV Modules
Warranty · Waaree · Jun 2026

About Waaree

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

ManufacturerWaaree
Listed in CEC asWAAREE ENERGIES LIMITED
Websitewaaree.com
PVEL Top Performer (manufacturer)5 Scorecards (2022–2026)
RETC PV Module Index2024, 2025, 2026
Current panel series in CEC list22

Other series by SoCal permits

WSMDi · 3BiN-21BiN-01BiN-02BiN-03BiN-05

Questions & answers

How efficient is the Waaree WSMD 405?

Calculated from the panel area (2.16 m²): about 20.2% for the 405 W class. 405 W over 2.16 m² equals about 188 W per square meter.

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

PVWatts v8 with typical-year weather gives about 679 kWh per year per 405 W panel in Los Angeles and about 743 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.34 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 17.6% 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 2–11 panels per string (Voc at 2 °C = 52.6 V, Vmp at 74 °C cell = 32.6 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 52.6 V vs max input 60 V; Vmp when hot 32.6 V vs MPPT low 29 V; recommended module power 235–440 W. Confirm on the microinverter maker’s compatibility list.

What does the warranty cover?

12 years on the product and 27 years on performance (manufacturer datasheet).

Has this panel been reliability-tested?

This exact series is not in published PVEL Top Performer tables; Waaree was named a Top Performer in 5 Scorecards (2022–2026). RETC named Waaree Overall Highest Achiever in 2025, 2026.

What fire rating does it have?

UL 61730 fire rating Type 2 per datasheet.

Sources

California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
Waaree — datasheet ARKA SERIES WSMD-520-550 WEL-EPD-520-550-144-MP-HC-11-14.06.2024.
Waaree — manufacturer datasheet “ARKA SERIES WSMDi-395 to WSMDi-415 166 mm2”.
Qcells — manufacturer datasheet “Q.PEAK DUO BLK ML-G10+ ENDURING HIGH PERFORMANCE”.
Waaree — document library on the manufacturer’s website (links above).
Kiwa PVEL — PV Module Reliability Scorecard, Top Performer lists 2022–2026.
RETC — PV Module Index reports 2024–2026.
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).