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Trina Solar TSM-400DE09.08
Trina Solar Brand review

TSM-400DE09.08

400 Wp Monocrystalline
ComparePV verdict

Middle of its segment, short guarantee

Rank 11,723 of 14,129
Compare panels Datasheet PDF
Power (Wp)
400
Weak · bottom 25%
Efficiency (%)
20.80
Typical · median 21.30%
Density (Wp/m²)
208.1
Typical · median 212.5
Temp (%/°C)
-0.340
Typical · median -0.300
Weight (kg)
21.0
Typical · median 22.5 kg
Warranty (yrs)
25
Weak · bottom 19%

The Trina Solar Vertex S series was designed to extract maximum energy from standard roofs - without resorting to non-standard installation structures. The key lies in the waffle-pack 210-based platform and advanced high-density cell interconnection technology, enabling higher module power output while maintaining a manageable format. In practice, this means easier adaptation to limited roof space and faster installation, especially when logistics, weight, and crew safety are key factors.

The Vertex S series also stands out for its approach to durability - selected variants feature dual-glass construction, which better withstands humidity, salinity, and aggressive environments, while also supporting longer-term parameter stability. Newer versions of the series incorporate n-type i-TOPCon technology, valued for its lower degradation rate and higher yield over the long term. For investors prioritizing aesthetics, a full-black version with a cohesive look is available.

This is an excellent choice for homes, commercial micro-installations, and rooftops where competing panels often lose out on size, durability, or compatibility.

Ranking

6,577 panels in the 300-500 W band, all technologies
Metric This panel Median Position in segment Overall rank
Module efficiency 20.80% 21.30% Typical 10,533
Power density 208.1 212.5 Typical 10,542
Temperature coefficient -0.340 -0.300 Typical 8,846
Weight per kWp 52.5 53.2 Typical 6,090
Performance warranty 25 yrs 30 yrs Weak · bottom 19% 9,912
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 1 caution
Best for

Residential and commercial.

Not ideal for

Owners who want a long output guarantee.

Watch-outs
25 year performance warranty

Bottom 19% of the 300-500 W band, against a median of 30 yrs.

Notes from the database
  • At 20.8% efficiency, this panel is 1.0pp below the database median of 21.8%
  • 208.1 W/m² power density is 10.0 W/m² below database median (218.1 W/m²) - requires larger installation area
  • Temperature coefficient of -0.34%/°C is 0.04pp worse than database median (-0.30%/°C) - higher losses in summer heat
  • 21.0 kg weight - 5.5 kg lighter than database median (26.5 kg), reducing installation effort
  • In the top 75% for efficiency among all N-type panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 400 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.80 % Typical Segment median 21.30%
Vmpp · Impp 34.20 V · 11.70 A Operating point at max power
Voc · Isc 41.20 V · 12.28 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1754×1096×30 mm · 1.92 m² of roof
Weight 21.0 kg Typical Typical · median 22.5 kg
Cells 120 Monocrystalline
Coefficient Pmax -0.340 %/°C Typical median -0.300 of its segment
Coefficient Voc · Isc -0.250 · 0.040 %/°C
NOCT 43 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 25 years Weak bottom 19% · median 30 yrs
End-of-warranty output 84.8 % Equals 328 W guaranteed
Degradation 2.00 → 0.55 % 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 400 Wp appear here. The rest cover the whole series.

Extended Warranty of Vertex S (degradation vs. years chart) Extended Warranty of Vertex S (degradation vs. years chart) 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
-

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

Heat losses
-0.340 %/°C against a segment median of -0.300
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Trina Solar TSM-400DE09.08 400 W 20.80% -0.340 21.0 kg You are here
LX-440M/182-108+GG 440 W 23.07% -0.240 23.6 kg Cooler, +2.3 pp, +5 yr warranty
JST-EDMH-(445-465)W-TD (450W class) 450 W 23.05% -0.300 20.5 kg +50 W, +2.2 pp, +5 yr warranty
QNN182-HG450-54 450 W 23.04% -0.290 24.0 kg +50 W, cooler, +2.2 pp
HY440-N108BDD 450 W 23.04% -0.300 23.5 kg +50 W, +2.2 pp, +5 yr warranty
NLBK-27-450 450 W 23.04% -0.300 22.9 kg +50 W, +2.2 pp, +5 yr warranty
RS41-450NBG-E3 450 W 23.04% -0.290 24.5 kg +50 W, cooler, +2.2 pp
TSM-DE09.05-380 380 W 19.80% -0.340 21.0 kg -20 W, -1.0 pp
TSM-DE09.05-385 385 W 20.00% -0.340 21.0 kg -15 W, -0.8 pp
TSM-DE09.05-390 390 W 20.30% -0.340 21.0 kg -10 W, -0.5 pp
TSM-DE09.08-395 395 W 20.50% -0.340 21.0 kg -0.3 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +110 W, cooler, +4.2 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +95 W, cooler, +4.0 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +105 W, cooler, +3.9 pp
WST-505BKX54-A2 505 W 24.70% -0.260 25.0 kg +105 W, cooler, +3.9 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +90 W, cooler, +3.7 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +100 W, cooler, +3.7 pp

Found 53 panels of the same or similar size to this one, within ±10 mm. See them here Found 67 panels of the same or similar size to this one, within ±25 mm. See them here Found 3708 panels of the same or similar size to this one, within ±50 mm. See them here Found 4212 panels of the same or similar size to this one, within ±100 mm. See them here

About the Vertex S series

6 answered

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

How much power does a Trina Solar Vertex S series panel produce?
Panels in the Vertex S series reach a maximum power output of up to 425 Wp. This is achieved through a platform based on 210 mm wafers and high-density cell interconnection, delivering high wattage without increasing module dimensions. This makes the panel well suited for both residential installations and small commercial arrays where the power-to-roof-area ratio matters.
What warranty comes with Trina Solar Vertex S panels?
The manufacturer provides a 15-year product warranty covering material and workmanship defects, along with a 25-year power warranty guaranteeing sustained performance over the module's lifetime. This is a standard offering from tier 1 manufacturers, a category that includes Trina Solar, one of the largest global PV module producers.
How does the PERC technology in Vertex S differ from newer n-type panels?
PERC cells in Vertex S use an additional rear passivation layer that improves light capture and boosts efficiency compared to conventional monocrystalline cells. Newer variants of the series, built on n-type i-TOPCon technology, offer even lower annual degradation and higher long-term energy yield, but PERC remains a proven, more affordable option with a solid price-to-performance ratio.
Is the Vertex S panel bifacial?
No, this Vertex S variant is a monofacial panel, optimized for standard mounting on pitched and flat roofs where generating energy from the rear side would provide no additional benefit. This makes it simpler to install and typically more affordable than bifacial versions, while still delivering high unit power output.
What type of roof is Vertex S best suited for?
Vertex S was designed for typical sloped roofs, prioritizing a compact form factor and easy installation without requiring non-standard mounting structures. Its manageable size and moderate weight make it easier to transport across the roof and install, making the series a good fit for single-family homes and small commercial installations with limited roof space.
Is a full black version of Vertex S available?
Yes, full black variants are available, featuring a uniform black frame, backsheet, and cells. This option is popular among installers and homeowners who prioritize a consistent, sleek visual appearance, particularly for street-facing roof installations, without having to sacrifice high module power output.
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