Illustration · 20 cells

Building-integrated solar panelHeliene

Heliene 20M-100GH

20 cells. 100 W in the CEC list.

CEC listed · Jan 2, 2020UL 1703Building-integrated (BIPV)

Power (STC)100 WCEC nameplate
Efficiency≈6.2%calculated from area
%/°C Pmax−0.587CEC listing test
PTC / STC85.2%PTC 85 W (CEC)

Electrical ratings (STC)

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

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
20M-100GH	100 W	13.30	9.73	11.16	9.20	≈6.2%	85 W	Jan 2, 2020

≈ efficiency = Pmax ÷ CEC-listed area 1.62 m².

Heat & cold behaviour

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

	CEC listing test
Pmax coefficient γ	−0.587 %/°C
Voc coefficient β	−0.339 %/°C
Isc coefficient α	+0.017 %/°C
Operating cell temperature	NOCT 46 °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
100 W	75.7 W	9.3 V × 8.14 A	20.8 W	104%

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

CityColdest air, °CHottest cell, °C

14.3 V

Voc when cold

per panel

7.9 V

Vmp when hot

per panel

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.

Integrated roof products are wired per the manufacturer’s system design.

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	168	5,028	6.08
Palmdale	1,835	184	5,505	6.69
Chula Vista	1,696	170	5,088	6.11
Huntington Beach	1,643	164	4,929	5.89
Riverside	1,696	170	5,088	6.21
Santa Clarita	1,724	172	5,172	6.28

PVWatts models a standard roof-mounted module; integrated roof products are not modeled separately.

Estimate for comparison, not a quote: shading, roof orientation and local losses change real output. Roof mount, 20° tilt, south, 14% system losses.

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 20M-100GH?

Calculated from the panel area (1.62 m²): about 6.2% for the 100 W class. 100 W over 1.62 m² equals about 62 W per square meter.

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

PVWatts v8 with typical-year weather gives about 168 kWh per year per 100 W panel in Los Angeles and about 184 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.587 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 30.4% below the STC rating.

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 (snapshot Oct 7, 2026).
Kiwa PVEL — PV Module Reliability Scorecard, Top Performer lists 2020–2025.
NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Chula Vista, Huntington Beach, Riverside, Santa Clarita.
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).