Trina Solar TSM-NEG18R.20-515 vs TCL Zhonghuan HSM-ND54-GR505
VS
The verdict
TSM-NEG18R.20-515 leads on the differences that matter
The largest is module efficiency: 0.50 pp more efficient. 12 of 19 comparable parameters are identical.
See all 7 differencesHow alike are they
12
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
7 of 19 parameters
What actually differs
Parameter
TSM-NEG18R.20-515
HSM-ND54-GR505
Difference
Module efficiency
23.20 %
22.70 %
0.50 pp more efficient
Product warranty
15 yrs
25 yrs
10 yrs longer
Weight per kWp
45.6 kg/kWp
53.5 kg/kWp
7.8 kg/kWp lighter
Weight
23.5 kg
27.0 kg
3.5 kg lighter
Power density
231.6 Wp/m²
227.1 Wp/m²
4.5 Wp/m² higher
Rated power
515 Wp
505 Wp
10 W more power
Bifacial
No
Yes
No vs Yes
02
What it means on a roof
Thirty years of production
Each panel's own declared degradation curve, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
TSM-NEG18R.20-515
17,279 kWh
HSM-ND54-GR505
16,944 kWh
Lifetime gap
335 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
TSM-NEG18R.20-515
HSM-ND54-GR505
Standard test conditions
25 °C
100.0% of rated power
515 W
505 W
Cool, bright day
40 °C
95.7% of rated power
493 W
483 W
Typical summer roof
55 °C
91.3% of rated power
470 W
461 W
Hot roof
70 °C
87.0% of rated power
448 W
439 W
03
Full specification
Parameter
TSM-NEG18R.20-515
HSM-ND54-GR505
Difference
Power and efficiency
Rated power
515 Wp
505 Wp
+10 W for TSM-NEG18R.20-515
Module efficiency
23.20 %
22.70 %
+0.50 pp for TSM-NEG18R.20-515
Power density
231.6 Wp/m²
227.1 Wp/m²
+4.5 Wp/m² for TSM-NEG18R.20-515
Open-circuit voltage
40.90 V
40.14 V
Effectively the same
Voltage at max power
33.90 V
33.90 V
Same
Short-circuit current
15.96 A
15.88 A
Effectively the same
Current at max power
15.20 A
14.90 A
Effectively the same
Temperature
Temperature coefficient
-0.290 %/°C
-0.290 %/°C
Same
Mechanical
Dimensions
1961x1134x30 mm
1961x1134x30 mm
Same
Module area
2.224 m²
2.224 m²
Same
Weight
23.5 kg
27.0 kg
-3.5 kg for TSM-NEG18R.20-515
Weight per kWp
45.6 kg/kWp
53.5 kg/kWp
-7.8 kg/kWp for TSM-NEG18R.20-515
Warranty and degradation
Product warranty
15 yrs
25 yrs
+10 yrs for HSM-ND54-GR505
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.40 %/yr
0.40 %/yr
Same
Technology
Cell technology
TOPCon
TOPCon
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
108
108
Same
Bifacial
No
Yes
No vs Yes
04
14,005 panels
Against the whole database
Efficiency
#1,306
vs
#3,307
TSM-NEG18R.20-515 leads by 2,001 places
Power density
#1,473
vs
#3,312
TSM-NEG18R.20-515 leads by 1,839 places
Heat behaviour
#2,165
vs
#2,165
Tied - the same position in the database
Weight
#789
vs
#7,409
TSM-NEG18R.20-515 leads by 6,620 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#5,086
vs
#4,152
HSM-ND54-GR505 leads by 934 places
05
Open the full database
More useful comparisons
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Trina Solar TSM-NEG18R.20-515 vs Trina Solar TSM-NEG18R.20-520
One difference: module efficiency
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TCL Zhonghuan HSM-ND54-GR505 vs TCL Zhonghuan HSM-ND54-GR515
3 differences, the largest is module efficiency
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3 differences, the largest is module efficiency
06
Written summary
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07
Questions about this pairing
Which panel is better: Trina Solar TSM-NEG18R.20-515 or TCL Zhonghuan HSM-ND54-GR505?
According to our database: Trina Solar TSM-NEG18R.20-515 has higher module efficiency (23.20% vs 22.70%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Trina Solar TSM-NEG18R.20-515 and TCL Zhonghuan HSM-ND54-GR505?
Trina Solar TSM-NEG18R.20-515 has a module efficiency of 23.20%, while TCL Zhonghuan HSM-ND54-GR505 is 22.70%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Trina Solar TSM-NEG18R.20-515 use vs TCL Zhonghuan HSM-ND54-GR505?
Trina Solar TSM-NEG18R.20-515 uses TOPCon cells; TCL Zhonghuan HSM-ND54-GR505 uses TOPCon. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.
What is the warranty on Trina Solar TSM-NEG18R.20-515 and TCL Zhonghuan HSM-ND54-GR505?
Trina Solar TSM-NEG18R.20-515 has a 30 years power warranty; TCL Zhonghuan HSM-ND54-GR505 has a 30 years power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80-87%). Product (materials) warranties are usually shorter.
Are Trina Solar TSM-NEG18R.20-515 and TCL Zhonghuan HSM-ND54-GR505 bifacial panels?
TCL Zhonghuan HSM-ND54-GR505 is bifacial (captures light from both faces); Trina Solar TSM-NEG18R.20-515 is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.
Shop prices: See 248 Trina Solar offers · See 25 TCL Zhonghuan offers
Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate. The thirty-year projection and the temperature scenarios are calculations from those figures, and each states its assumption above.