Trina Solar TSM-NEG21C.20Q-750 vs Trina Solar TSM-NEG21C.20Q-745
VS
The verdict
Identical on every published parameter
All 19 comparable parameters agree. Two records this alike are usually one panel sold under two names, or two bins of the same production line - decide on price and on who you would rather buy from.
How alike are they
19
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
0 of 19 parameters
What actually differs
Every comparable parameter agrees. The full specification is below.
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 (-0.260 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
750
25,360 kWh
745
25,191 kWh
Lifetime gap
169 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
750
745
Standard test conditions
25 °C
100.0% of rated power
750 W
745 W
Cool, bright day
40 °C
96.1% of rated power
721 W
716 W
Typical summer roof
55 °C
92.2% of rated power
692 W
687 W
Hot roof
70 °C
88.3% of rated power
662 W
658 W
03
Full specification
Parameter
750
745
Difference
Power and efficiency
Rated power
750 Wp
745 Wp
Effectively the same
Module efficiency
24.10 %
24.00 %
Effectively the same
Power density
241.4 Wp/m²
239.8 Wp/m²
Effectively the same
Open-circuit voltage
50.50 V
50.30 V
Effectively the same
Voltage at max power
42.50 V
42.30 V
Effectively the same
Short-circuit current
18.77 A
18.73 A
Effectively the same
Current at max power
17.66 A
17.62 A
Effectively the same
Temperature
Temperature coefficient
-0.260 %/°C
-0.260 %/°C
Same
Mechanical
Dimensions
2384x1303x33 mm
2384x1303x33 mm
Same
Module area
3.106 m²
3.106 m²
Same
Weight
38.3 kg
38.3 kg
Same
Weight per kWp
51.1 kg/kWp
51.4 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.35 %/yr
0.35 %/yr
Same
Technology
Cell technology
TOPCon
TOPCon
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
264
264
Same
Bifacial
Yes
Yes
Same
04
14,129 panels
Against the whole database
Efficiency
#241
vs
#329
750 leads by 88 places
Power density
#241
vs
#366
750 leads by 125 places
Heat behaviour
#515
vs
#515
Tied - the same position in the database
Weight
#4,425
vs
#4,829
750 leads by 404 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#123
vs
#150
750 leads by 27 places
05
Open the full database
More useful comparisons
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Trina Solar TSM-NEG21C.20Q-750 vs Trina Solar TSM-NEG21C.20Q-760
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Trina Solar TSM-NEG21C.20Q-750 vs Trina Solar TSM-NEG21C.20Q-755
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Trina Solar TSM-NEG21C.20Q-750 vs Trina Solar TSM-NEG21C.20Q-740
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Trina Solar TSM-NEG21C.20Q-750 vs Trina Solar TSM-NEG21C.20Q-735
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Trina Solar TSM-NEG21C.20Q-750 vs Trina Solar TSM-NEG19RC.20Q
8 differences, the largest is module efficiency
Same manufacturer
Trina Solar TSM-NEG21C.20Q-750 vs Trina Solar TSM-NEG21C.20-740
6 differences, the largest is temperature coefficient
06
Written summary
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07
Questions about this pairing
Which panel is better: Trina Solar TSM-NEG21C.20Q-750 or Trina Solar TSM-NEG21C.20Q-745?
According to our database: Trina Solar TSM-NEG21C.20Q-750 has higher module efficiency (24.10% vs 24.00%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Trina Solar TSM-NEG21C.20Q-750 and Trina Solar TSM-NEG21C.20Q-745?
Trina Solar TSM-NEG21C.20Q-750 has a module efficiency of 24.10%, while Trina Solar TSM-NEG21C.20Q-745 is 24.00%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Trina Solar TSM-NEG21C.20Q-750 use vs Trina Solar TSM-NEG21C.20Q-745?
Trina Solar TSM-NEG21C.20Q-750 uses TOPCon cells; Trina Solar TSM-NEG21C.20Q-745 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-NEG21C.20Q-750 and Trina Solar TSM-NEG21C.20Q-745?
Trina Solar TSM-NEG21C.20Q-750 has a 30 years power warranty; Trina Solar TSM-NEG21C.20Q-745 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-NEG21C.20Q-750 and Trina Solar TSM-NEG21C.20Q-745 bifacial panels?
Both Trina Solar TSM-NEG21C.20Q-750 and Trina Solar TSM-NEG21C.20Q-745 are bifacial - they capture reflected light from the ground, which can add 5-15% more annual energy on ground-mount or elevated rooftop installations with a light surface beneath.
Shop prices: See 194 Trina Solar 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.