Illustration · 156 half-cut cells

Solar panelHeliene

Heliene 156HC-620 M10 NTYP SL

Name: Heliene 156HC-620 M10 NTYP SL
Brand: Heliene

156 half-cut cells. Power classes 605–635 W in the CEC list.

CEC listed · Mar 11, 2024UL 61730

Power class

Power (STC)620 WCEC nameplate
Efficiency≈22.4%calculated from area
%/°C Pmax−0.297CEC listing test
PTC / STC95%PTC 589 W (CEC)

Power classes

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

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
156HC-605 M10 NTYP SL	605 W	55.20	14.09	45.64	13.27	≈21.8%	574 W	Mar 11, 2024
156HC-610 M10 NTYP SL	610 W	55.35	14.14	45.92	13.30	≈22.0%	579 W	Mar 11, 2024
156HC-615 M10 NTYP SL	615 W	55.50	14.19	46.20	13.32	≈22.2%	584 W	Mar 11, 2024
156HC-620 M10 NTYP SL	620 W	55.65	14.24	46.48	13.35	≈22.4%	589 W	Mar 11, 2024
156HC-625 M10 NTYP SL	625 W	55.80	14.28	46.75	13.38	≈22.6%	594 W	Mar 11, 2024
156HC-630 M10 NTYP SL	630 W	55.95	14.33	47.01	13.42	≈22.7%	599 W	Mar 11, 2024
156HC-635 M10 NTYP SL	635 W	56.11	14.38	47.19	13.47	≈22.9%	604 W	Mar 11, 2024

≈ efficiency = Pmax ÷ CEC-listed area 2.77 m².

Build & dimensions

CEC PV Module List (Oct 7, 2026)

Module area2.77 m² (29.8 ft²)CEC-listed area
Cells156 half-cut cells
Back coverWhite backsheet

Heat & cold behaviour

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

	CEC listing test
Pmax coefficient γ	−0.297 %/°C
Voc coefficient β	−0.241 %/°C
Isc coefficient α	+0.044 %/°C
Operating cell temperature	NOCT 43.2 °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
605 W	451.9 W	43.58 V × 10.37 A	114.4 W	95%
610 W	455.7 W	43.85 V × 10.39 A	115.3 W	95%
615 W	459.2 W	44.12 V × 10.41 A	116.2 W	94%
620 W	463 W	44.39 V × 10.43 A	117.2 W	94%
625 W	466.8 W	44.64 V × 10.46 A	118.1 W	94%
630 W	470.8 W	44.89 V × 10.49 A	119.1 W	95%
635 W	474.3 W	45.06 V × 10.53 A	120 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

PVEL Scorecards

Heliene named Top Performer, 2020–2025

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

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

58.7 V

Voc when cold

per panel

38.7 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	2–10
Solis (Ginlong) S6-EH1P10K-H-US	600 V	80–520 V	datasheet	3–10
Solis (Ginlong) Solis-1P7.6K-4G-US	600 V	100–500 V	datasheet	3–10
Qcells Q.VOLT H7.6SX	498 V	234–498 V	CEC test window	7–8

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	1,039	11,430	6.08
Palmdale	1,835	1,138	12,515	6.69
Chula Vista	1,696	1,052	11,567	6.11
Huntington Beach	1,643	1,019	11,205	5.89
Riverside	1,696	1,052	11,567	6.21
Santa Clarita	1,724	1,069	11,758	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 620 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)
Heliene 156HC-620 M10 NTYP SL	620 W	≈22.4%	−0.297	55.65	14.24	brand 5×
ZNShine Solar ZXM7-UHLDD144-615/N	615 W	≈24%	−0.281	52.9	14.72	product 2024, 2025, 2026
JinkoSolar JKM620N-66HL4M-BDV	620 W	≈23%	−0.299	49.08	16.08	product 2025
Waaree BiN-21-620	620 W	≥22.9%	−0.288	49.1	16.02	product 2026

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 Heliene

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

ManufacturerHeliene
Listed in CEC asHeliene
Websiteheliene.com
PVEL Top Performer (manufacturer)5 Scorecards (2020–2025)
Current panel series in CEC list21

Other series by SoCal permits

108HC-xxx M10 SL · 1108HC-xxx M10 NTYP SL Bifacial144HC-xxx M10 NTYP SL Bifacial156HC-xxx M10 NTYP SL Bifacial108HC-xxx M10 NTYP SL144HC-xxx M10 SL Bifacial

Questions & answers

How efficient is the Heliene 156HC-620 M10 NTYP SL?

Calculated from the panel area (2.77 m²): about 22.4% for the 620 W class. 620 W over 2.77 m² equals about 224 W per square meter.

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

PVWatts v8 with typical-year weather gives about 1,039 kWh per year per 620 W panel in Los Angeles and about 1,138 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.297 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 15.4% 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 2–10 panels per string (Voc at 2 °C = 58.7 V, Vmp at 74 °C cell = 38.7 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; Heliene was named a Top Performer in 5 Scorecards (2020–2025).

Sources

California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
JinkoSolar — datasheet THE MOST DEPENDABLE SOLAR PRODUCT.
Waaree — datasheet ELITE-R-SERIES-BiN-21-600-635-WEL-EPD-600-635-132-BiN-HC.
Kiwa PVEL — PV Module Reliability Scorecard, Top Performer lists 2020–2025.
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).