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Trina Solar TSM-NEG21C.20Q-740
Trina Solar Brand review

TSM-NEG21C.20Q-740

740 Wp TOPCon Bifacial 85%
ComparePV verdict

Strong in heat, no clear weak spot

Rank 185 of 14,129
Compare panels Datasheet PDF
Power (Wp)
740
Strong · top 2%
Efficiency (%)
23.80
Strong · top 3%
Density (Wp/m²)
238.2
Strong · top 2%
Temp (%/°C)
-0.260
Strong · top 1%
Weight (kg)
38.3
Typical · median 38.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

Vertex N G3 is Trina Solar's new generation of photovoltaic modules designed to maximize the use of available roof or ground space while keeping overall system costs down. The series is built on advanced n-type i-TOPCon Ultra technology, delivering high conversion efficiency and stable module performance throughout its service life. Thanks to bifacial technology, the panels also capture light reflected from the surrounding surface, providing additional energy yield without expanding the installation footprint. The multi-cut cell design combined with edge passivation reduces current losses and improves resistance to microcracks, which matters during transport and installation in demanding conditions. A low temperature coefficient and reduced annual degradation allow the module to maintain high productivity even in hot climates and over extended operation. The Vertex N G3 series works well for both rooftop installations and large ground-mount solar farms, where lowering BoS costs and LCOE is a key priority. It is a solution aimed at investors and installers looking for high-performance panels that genuinely reduce the cost of electricity generation per kilowatt-hour over the entire system lifecycle.

Ranking

420 panels in the segment TOPCon 700-750 W
Metric This panel Median Position in segment Overall rank
Module efficiency 23.80% 23.00% Strong · top 3% 462
Power density 238.2 230.2 Strong · top 2% 460
Temperature coefficient -0.260 -0.290 Strong · top 1% 515
Weight per kWp 51.8 52.9 Typical 5,156
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

3 positive · 0 caution
Best for

Utility-scale and commercial.

Strengths
-0.260 %/°C temperature coefficient

Top 1% of the TOPCon 700-750 W segment, against a median of -0.290. Ranked 515th in the whole database.

238.2 watts per square metre

Top 2% of the TOPCon 700-750 W segment, against a median of 230.2. Ranked 460th in the whole database.

23.80% module efficiency

Top 3% of the TOPCon 700-750 W segment, against a median of 23.00%. Ranked 462nd in the whole database.

Notes from the database
  • Efficiency of 23.8% is 0.8pp above the TOPCon 700-750W median (23.0%)
  • 238.2 W/m² power density - 8.0 W/m² more than TOPCon 700-750W median (230.2 W/m²), more power per roof area
  • -0.26%/°C temperature coefficient (median: -0.29%/°C) - retains ~1% more power at high temperatures
  • Bifacial design (85% factor) captures reflected light - adds 4-13% yield on ground-mount or white roof
  • In the top 3% for efficiency among all TOPCon panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 740 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 23.80 % Strong Segment median 23.00%
Vmpp · Impp 42.10 V · 17.58 A Operating point at max power
Voc · Isc 50.10 V · 18.69 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2384×1303×33 mm · 3.11 m² of roof
Weight 38.3 kg Typical Typical · median 38.0 kg
Cells 264 · TOPCon Monocrystalline
Bifaciality 85 % Rear output as a share of front
Coefficient Pmax -0.260 %/°C Strong top 1% 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 88.8 % Equals 657 W guaranteed
Degradation 1.00 → 0.35 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Trina Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 740 Wp appear here. The rest cover the whole series.

Performance Warranty Performance Warranty Whole series

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
-0.260 %/°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-NEG21C.20Q-740 740 W 23.80% -0.260 38.3 kg You are here
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg -40 W, lighter, +1.2 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg -45 W, lighter, +1.1 pp
AIKO-A690-MAE78Dw 690 W 24.70% -0.260 34.5 kg -50 W, lighter, +0.9 pp
AIKO-A790-GRH78Dw 790 W 24.60% -0.260 39.8 kg +50 W, heavier, +0.8 pp
TSM-NEG21C.20Q-760 760 W 24.50% -0.260 38.3 kg +20 W, +0.7 pp
AIKO-A785-GRH78Dw 785 W 24.40% -0.260 39.8 kg +45 W, heavier, +0.6 pp
GK-4-78HGBD-780M 780 W 24.30% -0.260 38.7 kg +40 W, +0.5 pp
AIKO-A780-GRH78Dw 780 W 24.30% -0.260 39.8 kg +40 W, heavier, +0.5 pp
JT755SLk(B) 755 W 24.30% -0.240 36.4 kg Cooler, lighter, +0.5 pp
TSM-NEG21C.20Q-755 755 W 24.30% -0.260 38.3 kg +15 W, +0.5 pp
TSM-DEG21C.20-645 645 W 20.80% -0.340 38.3 kg -95 W, hotter, -3.0 pp
TSM-DEG21C.20-650 650 W 20.90% -0.340 38.3 kg -90 W, hotter, -2.9 pp
TSM-DE21-655W 655 W 21.10% -0.340 32.3 kg -85 W, hotter, -2.7 pp
TSM-DE21-660W 660 W 21.20% -0.340 32.3 kg -80 W, hotter, -2.6 pp
TSM-DE21-665W 665 W 21.40% -0.340 32.3 kg -75 W, hotter, -2.4 pp
TSM-DE21-670W 670 W 21.50% -0.340 32.3 kg -70 W, hotter, -2.3 pp
AIKO-A805-GRH78Dw 805 W 25.10% -0.260 39.8 kg +65 W, heavier, +1.3 pp

Found 1393 panels of the same or similar size to this one, within ±10 mm. See them here Found 1403 panels of the same or similar size to this one, within ±25 mm. See them here Found 1403 panels of the same or similar size to this one, within ±50 mm. See them here Found 1435 panels of the same or similar size to this one, within ±100 mm. See them here

About the Vertex N G3 series

6 answered

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

What is the maximum power output of the Trina Solar Vertex N G3 panel?
The top variant of the Vertex N G3 series delivers up to 760 Wp of maximum power at a conversion efficiency of around 24.5%. This is achieved through n-type i-TOPCon Ultra cell technology combined with multi-cut cell design and edge passivation, which reduce current losses. The high per-unit power means installers need fewer modules to reach the same system capacity, lowering BoS and mounting costs.
Is the Vertex N G3 a bifacial panel, and how much extra energy does it produce?
Yes, the Vertex N G3 is a bifacial module with a bifaciality factor of 85±5%. The rear side captures light reflected off the ground, which can add several percent of extra yield over bright surfaces such as white gravel or snow, without increasing the installed area. The best gains occur in ground-mount solar farms and elevated racking systems that allow free light access from below.
What warranty does Trina Solar offer on the Vertex N G3 series?
Trina Solar provides a 12-year product warranty and a 30-year power output warranty on the Vertex N G3 series. Thanks to a low annual degradation rate of 0.35%, the module retains high output even after decades of operation. As a Tier 1 manufacturer, Trina Solar offers added confidence that the warranty will be honored over such a long service life.
Does the Vertex N G3 perform well in hot summer conditions?
Yes, the module has a low temperature coefficient of -0.26%/°C, meaning it loses less power output as its operating temperature rises on hot days compared to older-generation panels. This is a key advantage for roof installations exposed to direct sunlight and for projects located in hot climates, where cell temperatures can exceed 60-70°C.
Is the Vertex N G3 better suited for rooftop or ground-mount installations?
The Vertex N G3 series was primarily designed for large-scale ground-mount solar farms and commercial or industrial projects, where its 760 Wp power output meaningfully lowers BoS and LCOE costs. The module is fully compatible with mainstream tracking systems. Given its large dimensions and weight resulting from high wattage, sloped roof installations should first be checked for structural load capacity with an installer.
How does the Vertex N G3 differ from earlier Trina Solar module generations?
The Vertex N G3 is built on the advanced n-type i-TOPCon Ultra cell platform, which compared to earlier p-type modules offers higher efficiency, lower annual degradation (0.35%), and better shading tolerance. Maximum power has been increased to 760 Wp, and an optimized voltage-to-current ratio enables longer strings and fewer modules per system for the same target capacity.
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