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Trina Solar DUOMAX twin TSM-DEG18C.20 555

Brand
Trina Solar
Model
TSM-DEG18C.20 555
SKU / part number
?
Category
Solar panels
chargedreviews.com/panels/trina-solar-tsm-deg18c-20-555

Electrical at STC

Rated output (STC)555 W[1]
Module efficiency21.5 %[1]
Voltage at max power (Vmp)42.14 V[1]
Current at max power (Imp)13.18 A[1]
Open-circuit voltage (Voc)49.93 V[1]
Short-circuit current (Isc)14.05 A[1]
Power tolerance?

Temperature and system limits

Temperature coefficient, Pmax-0.34 %/°C[1]
Temperature coefficient, Voc-0.25 %/°C[1]
Temperature coefficient, Isc0.04 %/°C[1]
Maximum system voltage1,500 V[1]
Maximum series fuse?
NOCT / NMOT43 °C[1]
Rated output at NMOT?
Operating temperature-40 to 85 °C[1]

Cells and construction

Cell technologyMonocrystalline[1]
Cell count144 cells[1]
BifacialYes[1]
Bifaciality70 %[1]
Frame30mm(1.18 inches) Anodized Aluminium Alloy[1]
Front glass2.0 mm (0.08 inches), AR Coating Heat Strengthened Glass[1]
Rear surface2.0 mm (0.08 inches), Heat Strengthened Glass (White Coating)[1]
Panel formatrigid[1]

Mechanical and connections

Dimensions30 D × 1,134 W × 2,278 L mm[1]
Weight32.6 kg / 71.87 lb[1]
ConnectorsTS4 Plus / TS4 / MC4 EVO2[1]
Cable length?
Junction box rating?
Mounting?
Design load, front?
Design load, rear?

Installation (from the manual)

Not documented in the manual

Page 1 of 2 · Installation values · ? means nothing is recordedAggregated, often community-reported information, not official documentation. Do not rely on it for installation, purchase or compliance decisions; always confirm values with the manufacturer’s official documentation. Charged Reviews accepts no responsibility for errors.

Charged Reviews · Quick reference

Trina Solar DUOMAX twin TSM-DEG18C.20 555 · TSM-DEG18C.20 555

Warranty

Product warranty12 years[1]
Power warranty term30 years[1]
First-year degradation2 %[1]
Annual degradation after year one0.45 %[1]
Warranted final output84.95 %[1]
Coverage conditions?
Remedy?
Labor and shipping?
Transfer to another owner?

Certifications and listings

UL 61730?
UL 1703?
IEC 61215?
IEC 61730?
IEC 62804?
CEC listing?

Documents and sources

  1. Trina Solar DUOMAX twin TSM-DEG18C.20 520-555W datasheet, North America, stamped "Preliminary" (TSM_NA_EN_2026_PA2)Official datasheet · Revised Not stated · Checked Oct 22, 2026https://www-cdn.trinasolar.com/wwwstorage/sites/17/DT-M-0023-NA-EN-C-Datasheet_DuomaxTwin_DEG18C.20_2026_PA2.pdf