CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation
CEC listing test
Pmax coefficient γ
−0.337 %/°C
Voc coefficient β
−0.234 %/°C
Isc coefficient α
+0.046 %/°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
620 W
466.7 W
44.35 V × 10.52 A
119.5 W
96%
625 W
470.5 W
44.51 V × 10.57 A
120.5 W
96%
630 W
474.2 W
44.66 V × 10.62 A
121.4 W
96%
635 W
478 W
44.81 V × 10.67 A
122.4 W
96%
640 W
481.8 W
44.96 V × 10.71 A
123.4 W
96%
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 · RETC PV Module Index
2024
PVEL Top Performer
this series
3
Tests passed as Top Performer
DH, LID+LETID, PID
5
PVEL Scorecards
SEG Solar named Top Performer, 2022–2026
2
RETC PV Module Index
SEG Solar recognized 2023–2024
PVEL Top Performer tests
Year
Product
Tests
2024
SEG-xxx-BTZ-BG
DHLID+LETIDPID
Tested bill of materials
PVEL-tested factoryChina
Cell technology (tested BOM)n-type TOPCon
Module design (tested BOM)bifacial - glass//glass
Power class range tested580-625W
Details describe the tested sample, not every module of the series.
RETC PV Module Index — SEG Solar
Year
Recognition
2023
High Achievement in Performance (LeTID RESISTANCE)
2024
Test Category High Achiever
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)
60.2 V
Voc when cold
per panel
38.8 V
Vmp when hot
per panel
9
Max panels / string
max DC 600 V
2
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
2–9
Solis (Ginlong) S6-EH1P10K-H-US
600 V
80–520 V
datasheet
3–9
Solis (Ginlong) Solis-1P7.6K-4G-US
600 V
100–500 V
datasheet
3–9
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
City
kWh / kW / yr
kWh / panel / yr
kWh / system / yr
Sun, kWh/m²/day
Los Angeles
1,676
1,056
11,615
6.08
Palmdale
1,835
1,156
12,717
6.69
Chula Vista
1,696
1,068
11,753
6.11
Huntington Beach
1,643
1,035
11,386
5.89
Riverside
1,696
1,068
11,753
6.21
Santa Clarita
1,724
1,086
11,947
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.
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 SEG Solar
CEC PV Module List (Oct 7, 2026) · Kiwa PVEL Scorecard · RETC PV Module Index · building permits
Calculated from the panel area (2.76 m²): about 22.8% for the 630 W class. 630 W over 2.76 m² equals about 228 W per square meter.
How much energy does one panel produce in Los Angeles or Palmdale?
PVWatts v8 with typical-year weather gives about 1,056 kWh per year per 630 W panel in Los Angeles and about 1,156 kWh in Palmdale (20° roof, facing south, 14% system losses).
How much power does it lose on a hot roof?
With γ = −0.337 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 17.4% 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 2–9 panels per string (Voc at 2 °C = 60.2 V, Vmp at 74 °C cell = 38.8 V). Final design must follow the inverter manual and NEC 690.7.
Is it bifacial?
Yes. Rear gain depends on mounting height and ground reflectance.
Has this panel been reliability-tested?
SEG-xxx-BTZ-BG was a PVEL Top Performer in 2024 (DH, LID+LETID, PID).
Sources
California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
NLR (formerly NREL) — System Advisor Model CEC module and inverter libraries (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).
Get your free estimate
Three fields, and Cali Energy calls back within 30 minutes during business hours.
Thanks!
We got your request and will call back within 30 minutes during business hours.
