Sunflare FLEX20 55

Name: Sunflare FLEX20 55
Brand: Sunflare

20 cells. Power classes 55–60 W in the CEC list.

CEC listed · Mar 21, 2023UL 61730Building-integrated (BIPV)

Power class

Power (STC)55 WCEC nameplate
Efficiency≈9.3%calculated from area
%/°C Pmax−0.434CEC listing test
PTC / STC90%PTC 50 W (CEC)

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · 2 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
FLEX20-55W	55 W	12.00	7.20	8.90	6.17	≈9.3%	50 W	Mar 21, 2023
FLEX20-60W	60 W	12.50	7.40	9.50	6.30	≈10.2%	54 W	Mar 21, 2023

≈ efficiency = Pmax ÷ CEC-listed area 0.59 m².

Build & dimensions

CEC PV Module List (Oct 7, 2026)

Module area0.59 m² (6.4 ft²)CEC-listed area
Cells20 cells
Back coverBlack backsheet

Heat & cold behaviour

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

	CEC listing test
Pmax coefficient γ	−0.434 %/°C
Voc coefficient β	−0.327 %/°C
Operating cell temperature	NOCT 44.9 °C

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
55 W	40.4 W	8.25 V × 4.9 A	9.2 W	84%
60 W	44.1 W	8.8 V × 5.01 A	10.1 W	84%

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

Certifications

CEC PV Module List (Oct 7, 2026)

UL 61730IEC 61215

UL 61730CEC listing
IEC 61215design qualification on file with CEC · Oct 11, 2021

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	92	11,707	6.08
Palmdale	1,835	101	12,817	6.69
Chula Vista	1,696	93	11,847	6.11
Huntington Beach	1,643	90	11,476	5.89
Riverside	1,696	93	11,847	6.21
Santa Clarita	1,724	95	12,042	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.

Questions & answers

How efficient is the Sunflare FLEX20 55?

Calculated from the panel area (0.59 m²): about 9.3% for the 55 W class. 55 W over 0.59 m² equals about 93 W per square meter.

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

PVWatts v8 with typical-year weather gives about 92 kWh per year per 55 W panel in Los Angeles and about 101 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.434 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 22.5% below the STC rating.

Sources

California Energy Commission — Solar Equipment Lists, PV Module List (snapshot Oct 7, 2026).
NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Chula Vista, Huntington Beach, Riverside, Santa Clarita.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).