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Illustration · 120 half-cut cells
Solar panelSolarspace Technology

Solarspace Technology SS8-60HD-475N

120 half-cut cells. Power classes 470–485 W in the CEC list.

CEC listed · Jul 1, 2025UL 61730
Power class
  • Power (STC)475 WCEC nameplate
  • Efficiency≈22.6%calculated from area
  • %/°C Pmax−0.275CEC listing test
  • PTC / STC94.1%PTC 447 W (CEC)

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · 4 models
ModelPmaxVoc, VIsc, AVmp, VImp, AEfficiencyPTCCEC listed
SS8-60HD-470N470 W42.3514.1635.0313.42≈22.4%442 WJul 1, 2025
SS8-60HD-475N475 W42.5114.2435.1913.50≈22.6%447 WJul 1, 2025
SS8-60HD-480N480 W42.6814.3235.3513.58≈22.9%452 WJul 1, 2025
SS8-60HD-485N485 W42.8514.4035.5113.66≈23.1%457 WJul 1, 2025
≈ efficiency = Pmax ÷ CEC-listed area 2.1 m².

Build & dimensions

CEC PV Module List (Oct 7, 2026)

Heat & cold behaviour

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation
CEC listing test
Pmax coefficient γ−0.275 %/°C
Voc coefficient β−0.229 %/°C
Isc coefficient α+0.041 %/°C
Operating cell temperatureNOCT 48.3 °C
Vmp coefficient ≈ γ − α (CEC); used only for the hot-roof voltage estimate.

Away from lab conditions — CEC listing test points

ClassPmax at NOCTVmp × Imp at NOCTPmax at 200 W/m²Low-light efficiency vs STC
470 W358.3 W34.84 V × 10.29 A93.9 W100%
475 W362.1 W34.99 V × 10.35 A94.9 W100%
480 W365.9 W35.15 V × 10.41 A95.9 W100%
485 W369.7 W35.31 V × 10.47 A96.9 W100%
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
2
PVEL Scorecards
Solarspace Technology named Top Performer, 2023–2024
2024, 2025, 2026
RETC Overall Highest Achiever
Solarspace Technology, manufacturer level
This exact series is not listed in published PVEL Top Performer tables. Results below are for the manufacturer.

RETC PV Module Index — Solarspace Technology

YearRecognition
2023High Achievement in Performance (LeTID RESISTANCE)
2024Overall Highest Achiever
2025Overall Highest Achiever
2026Overall Highest Achiever; High achievement in performance; High achievement in reliability; Performance discipline high achiever (Iam, PAN file, Temperature coefficient); Quality discipline high achiever (BOM verification); Reliability discipline high achiever (Damp heat, Pid, Tc)

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)
44.7 V
Voc when cold
per panel
29.7 V
Vmp when hot
per panel
13
Max panels / string
max DC 600 V
3
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

InverterMax DC inputMPPTWindow sourcePanels per string
Tesla 1538000-xx-y600 V60–480 Vdatasheet3–13
Solis (Ginlong) S6-EH1P10K-H-US600 V80–520 Vdatasheet3–13
Solis (Ginlong) Solis-1P7.6K-4G-US600 V100–500 Vdatasheet4–13
Qcells Q.VOLT H7.6SX498 V234–498 VCEC test window8–11

Microinverters (one per panel)

MicroinverterRecommended module powerMax DC inputMPPTVoc cold / Vmp hotCheckDC/AC
Enphase IQ8X-80-M-US320–540 W79.5 V43–60 V44.7 / 29.7 V✗ Not a match: module voltage below MPPT range1.25
APsystems (Alt Power System) DS3-L265–570 W60 V28–45 V44.7 / 29.7 V✓ Within range0.61
Enphase IQ8A-72-2-US295–500 W60 V32–45 V44.7 / 29.7 V⚠ Works; below MPPT at peak heat1.36
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
CitykWh / kW / yrkWh / panel / yrkWh / system / yrSun, kWh/m²/day
Los Angeles1,67679611,9426.08
Palmdale1,83587213,0746.69
Chula Vista1,69680612,0846.11
Huntington Beach1,64378011,7065.89
Riverside1,69680612,0846.21
Santa Clarita1,72481912,2846.28
779Jan780Feb1,001Mar1,106Apr1,092May1,161Jun1,223Jul1,237Aug1,082Sep954Oct820Nov710DeckWh per month · Los Angeles
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 475 W panels

CEC PV Module List (Oct 7, 2026) · Kiwa PVEL Scorecard · datasheets · building permits
PanelPmaxEfficiencyγ Pmax (CEC)Voc, VIsc, APVEL (product / brand)SoCal permits (series)
Solarspace Technology SS8-60HD-475N475 W≈22.6%−0.27542.5114.24brand 2×—
REC Group REC475AA Pure-RX475 W≈23.5%−0.24865.79brand 9× (2016–2025)33
SEG Solar SEG-455-BTD-BG455 W≈23.3%−0.26239.7614.11product 2023, 2024, 2025, 20268
Qcells Q.PEAK DUO XL-G10.d 475475 W≥20.5%−0.34053.5811.24product 20236
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 Solarspace Technology

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

Other series by SoCal permits

SH8-72HD-xxxNSHA-66HD-xxxNSS8-54HDB-xxxNSS8-72HD-xxxNSS9-66HD-xxxNSSA-66HD-xxxN

Questions & answers

How efficient is the Solarspace Technology SS8-60HD-475N?

Calculated from the panel area (2.1 m²): about 22.6% for the 475 W class. 475 W over 2.1 m² equals about 226 W per square meter.

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

PVWatts v8 with typical-year weather gives about 796 kWh per year per 475 W panel in Los Angeles and about 872 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.275 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 14.2% 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 3–13 panels per string (Voc at 2 °C = 44.7 V, Vmp at 74 °C cell = 29.7 V). Final design must follow the inverter manual and NEC 690.7.

Does it work with APsystems (Alt Power System) DS3-L microinverters?

Voltage check against the APsystems (Alt Power System) datasheet: Voc when cold 44.7 V vs max input 60 V; Vmp when hot 29.7 V vs MPPT low 28 V; recommended module power 265–570 W. Confirm on the microinverter maker’s compatibility list.

Has this panel been reliability-tested?

This exact series is not in published PVEL Top Performer tables; Solarspace Technology was named a Top Performer in 2 Scorecards (2023–2024). RETC named Solarspace Technology Overall Highest Achiever in 2024, 2025, 2026.

Sources

  1. California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
  2. SEG Solar — manufacturer datasheet “XXXTFHTPMBSDPN YUKON/Series )BMG$FMM/5ZQF501$PO”.
  3. Qcells — manufacturer datasheet “Q.PEAK DUO XL-G10.d ENDURING HIGH PERFORMANCE”.
  4. Kiwa PVEL — PV Module Reliability Scorecard, Top Performer lists 2023–2024.
  5. RETC — PV Module Index reports 2023–2026.
  6. NLR (formerly NREL) — System Advisor Model CEC inverter library (version 2026.7.3).
  7. NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Chula Vista, Huntington Beach, Riverside, Santa Clarita.
  8. Inverter datasheets — APsystems (Alt Power System), Enphase, Solis (Ginlong), Tesla (manufacturer documents).
  9. Building permits — Southern California permit portals. Equipment matched from permit descriptions.
  10. Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).