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TN Solar Brand review

TN5-54H-390

390 Wp TOPCon
ComparePV verdict

Light for its output, no clear weak spot

Rank 10,672 of 14,005
Compare panels Datasheet PDF
Power (Wp)
390
Strong · top 24%
Efficiency (%)
19.97
Strong · top 19%
Density (Wp/m²)
199.7
Strong · top 18%
Temp (%/°C)
-0.300
Typical · median -0.290
Weight (kg)
21.0
Strong · 5.0 kg below median
Warranty (yrs)
30
Typical · median 30 yrs

The TN Solar TN5-54H series consists of modules based on monocrystalline N-type cells and TOPCon technology, designed for stable operation over many years in real rooftop conditions. A key advantage of this series is low power degradation over time, ensuring that the installation continues to produce high levels of energy for a longer period and improves the overall return on investment, especially for self-consumption and selling excess energy.

The TN5-44H performs well in hot weather, which helps to minimize energy losses during peak summer demand. This translates to more predictable performance and greater resistance to weather conditions compared to many standard PERC systems. Furthermore, the modules are designed for installations with enhanced safety requirements, thanks to a robust IP68-rated junction box and a solid construction.

This series is recommended for single-family homes, small businesses, and projects where long-term reliability and trouble-free operation are paramount.

Ranking

112 panels in the segment TOPCon 350-400 W
Metric This panel Median Position in segment Overall rank
Module efficiency 19.97% 18.20% Strong · top 19% 12,302
Power density 199.7 181.8 Strong · top 18% 12,255
Temperature coefficient -0.300 -0.290 Typical 6,093
Weight per kWp 53.8 68.9 Strong · top 13% 7,897
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

Residential, commercial and hot-climate.

Strengths
53.8 kg per kWp

Top 13% of the TOPCon 350-400 W segment, against a median of 68.9.

199.7 watts per square metre

Top 18% of the TOPCon 350-400 W segment, against a median of 181.8.

19.97% module efficiency

Top 19% of the TOPCon 350-400 W segment, against a median of 18.20%.

Notes from the database
  • Efficiency of 20.0% is 4.0pp above the TOPCon 0-400W median (16.0%)
  • 199.7 W/m² power density - 39.9 W/m² more than TOPCon 0-400W median (159.8 W/m²), more power per roof area
  • At -0.30%/°C, hot weather performance is typical for TOPCon 0-400W panels
  • 21.0 kg weight - 2.5 kg lighter than TOPCon 0-400W median (23.5 kg), reducing installation effort
  • #12302 for efficiency, #6093 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 390 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 19.97 % Strong Segment median 18.20%
Vmpp · Impp 32.56 V · 11.98 A Operating point at max power
Voc · Isc 38.92 V · 12.43 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1722×1134×30 mm · 1.95 m² of roof
Weight 21.0 kg Strong Strong · 5.0 kg below median
Cells 108 · TOPCon Monocrystalline
Coefficient Pmax -0.300 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.250 · 0.046 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 25 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 341 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
-

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

Heat losses
-0.300 %/°C against a segment median of -0.290
-

Alternatives

All TN Solar panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
TN Solar TN5-54H-390 390 W 19.97% -0.300 21.0 kg You are here
LX-440M/182-108+GG 440 W 23.07% -0.240 23.6 kg +50 W, cooler, +3.1 pp
GKA210M340W 340 W 23.00% - 16.2 kg -50 W, lighter, +3.0 pp
GKA210M360W 360 W 23.00% - 16.2 kg -30 W, lighter, +3.0 pp
GKA210M380W (1/4*4*38) 380 W 23.00% - 17.1 kg -10 W, lighter, +3.0 pp
GKA210M400W (1/2*4*20) 400 W 23.00% - 18.0 kg +10 W, lighter, +3.0 pp
GKA210M400W (1/4*4*40) 400 W 23.00% - 18.0 kg +10 W, lighter, +3.0 pp
GKA210M380W (1/2*4*19) 380 W 23.00% - 17.1 kg -10 W, lighter, +3.0 pp
JT440SYK(B) 440 W 22.90% -0.240 23.0 kg +50 W, cooler, +2.9 pp
TN5-54H-370 370 W 18.97% -0.300 21.0 kg -20 W, -1.0 pp
TN5-54H-375 375 W 19.20% -0.300 21.0 kg -15 W, -0.8 pp
TN5-54H-380 380 W 19.49% -0.300 21.0 kg -10 W, -0.5 pp
TN5-54H-385 385 W 19.72% -0.300 21.0 kg -0.2 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +120 W, cooler, +5.0 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +105 W, cooler, +4.8 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +115 W, cooler, +4.7 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +100 W, cooler, +4.5 pp

Found 1783 panels of the same or similar size to this one, within ±10 mm. See them here Found 1914 panels of the same or similar size to this one, within ±25 mm. See them here Found 3392 panels of the same or similar size to this one, within ±50 mm. See them here Found 3970 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
How does TOPCon technology in TN Solar TN5-54H panels differ from standard PERC panels?
TOPCon (Tunnel Oxide Passivated Contact) uses N-type monocrystalline cells with an additional passivation layer that reduces electron recombination losses at the metal-silicon contact. As a result, TN5-54H modules achieve higher efficiency and lower power degradation over time compared to standard PERC panels based on P-type cells. In practice, this means higher energy yield throughout the system's lifetime.
What warranty comes with TN Solar TN5-54H panels?
TN5-54H panels come with a 25-year product warranty and a 30-year power output warranty. This means the manufacturer covers not only manufacturing defects but also guarantees a defined performance level over three decades, which is important when calculating the return on investment for a solar installation.
How much power does a single TN5-54H panel produce?
Modules in the TN5-54H series reach a maximum power output of 390 Wp. Thanks to TOPCon cell technology, the panel maintains high efficiency despite its compact size, allowing more power to be fitted into limited roof space, particularly useful for smaller residential installations.
Do TN5-54H panels perform well in summer heat and high temperatures?
Yes, thanks to TOPCon technology and N-type cells, TN5-54H panels have a more favorable temperature coefficient than typical PERC modules. This results in a smaller drop in energy yield on hot days, when panel surface temperatures can exceed 60°C. In practice, this translates into more stable power production during summer months, when energy demand is usually at its peak.
Are TN5-54H panels bifacial, generating power from both sides?
No, the TN5-54H series consists of monofacial modules rather than bifacial ones. This means energy generation occurs only from the front surface of the panel. This design works well for standard rooftop installations, where the rear side of the module typically doesn't receive enough reflected light to make bifacial technology cost-effective.
Is the junction box on TN5-54H panels resistant to moisture and rain?
Yes, TN5-54H modules feature an IP68-rated junction box, the highest protection class available for this type of component. This provides full protection against dust and resistance to prolonged water immersion, ensuring safe electrical connections even in harsh weather conditions, heavy rainfall, or high humidity.
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