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Trina Solar TSM-NEG20C.20-655
Trina Solar Brand review

TSM-NEG20C.20-655

655 Wp TOPCon Bifacial 80%
ComparePV verdict

Solid all-round for its segment

Rank 1,663 of 14,129
Compare panels Datasheet PDF
Power (Wp)
655
Typical for its class
Efficiency (%)
23.10
Typical · median 22.40%
Density (Wp/m²)
231.4
Typical · median 223.7
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
34.9
Typical · median 34.6 kg
Warranty (yrs)
30
Typical · median 30 yrs

Trina Solar's Vertex N TSM-NEG20C.20 (630-655W) series is designed for large-scale PV farms and commercial & industrial (C&I) projects, focusing on high power density on the mounting structure and predictable energy production over decades. The modules utilize n-type i-TOPCon cells, ensuring more stable performance and better resistance to common degradation mechanisms found in older technologies. In practice, this translates to more predictable energy gains and easier closing of project financial models.

For EPC contractors and investors, low temperature sensitivity and good performance under weaker sunlight conditions are also crucial - this genuinely minimizes power losses on hot days and during transition periods. The Vertex N NEG20C.20 series supports a long-term power warranty, helping to reduce project risks and energy costs throughout its entire lifecycle.

The Vertex N NEG20C.20 also stands out with high system compatibility for modern large-scale projects - where BOS costs, efficient logistics, and fast installation without compromising on quality are key.

Ranking

254 panels in the segment TOPCon 650-700 W
Metric This panel Median Position in segment Overall rank
Module efficiency 23.10% 22.40% Typical 1,617
Power density 231.4 223.7 Typical 1,548
Temperature coefficient -0.290 -0.290 Typical 2,220
Weight per kWp 53.3 53.1 Typical 7,232
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 0 caution
Best for

Utility-scale, commercial and hot-climate.

Notes from the database
  • At 23.1% efficiency, this panel is 0.7pp above typical TOPCon 650-700W modules (median: 22.4%)
  • Power density of 231.4 W/m² packs 7.7 W/m² more into the same footprint vs TOPCon 650-700W median (223.7 W/m²)
  • At -0.29%/°C, hot weather performance is typical for TOPCon 650-700W panels
  • 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces
  • Ranked #1617 out of 14129 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 655 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 23.10 % Typical Segment median 22.40%
Vmpp · Impp 37.60 V · 17.43 A Operating point at max power
Voc · Isc 45.40 V · 18.39 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2172×1303×33 mm · 2.83 m² of roof
Weight 34.9 kg Typical Typical · median 34.6 kg
Cells 120 · TOPCon Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.240 · 0.040 %/°C
NOCT 43 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 572 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-
With bifacial gain
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.290 %/°C against a segment median of -0.290
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Filter these
Size
Panel Power Eff. Temp. Weight Difference
Trina Solar TSM-NEG20C.20-655 655 W 23.10% -0.290 34.9 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg Cooler, lighter, +2.1 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg Cooler, lighter, +2.1 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg Cooler, lighter, +1.9 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg Cooler, lighter, +1.9 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +45 W, cooler, +1.9 pp
WST-675BKX72-A2 675 W 25.00% -0.260 32.1 kg Cooler, lighter, +1.9 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg +40 W, cooler, +1.8 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg Cooler, lighter, +1.7 pp
TSM-DEG20C.20-585W 585 W 20.70% -0.340 34.9 kg -70 W, hotter, -2.4 pp
TSM-DEG20C.20-590W 590 W 20.80% -0.340 34.9 kg -65 W, hotter, -2.3 pp
TSM-DEG20C.20-595W 595 W 21.00% -0.340 34.9 kg -60 W, hotter, -2.1 pp
TSM-DEG20C.20-600W 600 W 21.20% -0.340 34.9 kg -55 W, hotter, -1.9 pp
TSM-DEG20C.20-605W 605 W 21.40% -0.340 34.9 kg -50 W, hotter, -1.7 pp
TSM-NEG20C.20-625 625 W 22.10% -0.290 34.9 kg -30 W, -1.0 pp
TSM-NEG20C.20-630 630 W 22.30% -0.290 34.9 kg -25 W, -0.8 pp
TSM-NEG20C.20-635 635 W 22.40% -0.290 34.9 kg -20 W, -0.7 pp
GKA210N120 680 W 24.03% -0.340 28.0 kg Hotter, lighter, +0.9 pp

Found 497 panels of the same or similar size to this one, within ±10 mm. See them here Found 502 panels of the same or similar size to this one, within ±25 mm. See them here Found 502 panels of the same or similar size to this one, within ±50 mm. See them here Found 502 panels of the same or similar size to this one, within ±100 mm. See them here

About the Vertex N (TSM-NEG20C.20 630–655W) series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

What is n-type i-TOPCon cell technology used in the Trina Vertex N TSM-NEG20C.20 panels?
i-TOPCon is an n-type cell technology featuring an additional passivation layer on the rear side that reduces carrier recombination and boosts module efficiency (over 23.1%). Compared to older p-type PERC cells, i-TOPCon shows a lower light-induced degradation (LID) and light and elevated temperature-induced degradation (LeTID) rate, resulting in higher and more stable energy yield throughout the system's operating lifetime.
What warranty comes with the Trina Solar Vertex N TSM-NEG20C.20 series?
The series is backed by a 12-year product warranty covering material and workmanship defects, plus a 30-year linear power warranty guaranteeing a high percentage of nominal power output even after three decades of operation. This level of coverage is typical for premium n-type modules and helps investors and EPCs model LCOE and project revenue more accurately over the full system lifetime.
Are the Trina Vertex N TSM-NEG20C.20 panels suitable for a single-family home, or mainly for large-scale installations?
The NEG20C.20 series is designed for solar farms and large-scale C&I installations rather than typical pitched residential roofs. Its large footprint (about 2172×1303 mm) and weight of nearly 35 kg require a suitably robust mounting structure, usually ground-mount or large flat/industrial roofs, where high power density per mounting area matters more than compact dimensions suited to small pitched-roof racking.
What does bifacial mean for the Vertex N modules, and how much does it increase energy production?
Vertex N NEG20C.20 modules are bifacial - they generate power from both the front and rear sides, capturing light reflected off the ground surface. The bifaciality factor is about 80±5%, which, depending on ground albedo, mounting height, and racking configuration, can boost annual energy yield by several to more than ten percent compared to comparable monofacial modules, at no extra installation cost.
What are the dimensions and weight of the Trina Vertex N TSM-NEG20C.20 panel?
The panel measures approximately 2172×1303×33 mm and weighs just under 35 kg. It's a large, heavy module optimized for power-to-area ratio (up to 655 W), designed for transport and installation in professional utility-scale projects. When planning the mounting structure and installation logistics, both the module's footprint and weight should be factored in, especially given the large quantities typically deployed on a solar farm.
Do the Vertex N TSM-NEG20C.20 panels perform well in high temperatures and low-light conditions?
Yes, n-type i-TOPCon cells have a more favorable power temperature coefficient than older p-type technologies, limiting output drops on hot days. The modules also perform well under low irradiance, such as early morning, evening, or overcast conditions, delivering a more stable and predictable annual energy yield regardless of weather conditions at the installation site.
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