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NEG19RC.20Q vs NEG21C.20Q-760 11 of 19 identical Swap Change panels

Trina Solar TSM-NEG19RC.20Q vs Trina Solar TSM-NEG21C.20Q-760

Trina Solar TSM-NEG19RC.20Q
TSM-NEG19RC.20Q
670 Wp 24.80 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Trina Solar TSM-NEG21C.20Q-760
TSM-NEG21C.20Q-760
760 Wp 24.50 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

NEG19RC.20Q leads on the differences that matter

The largest is rated power: 90 W more power. 11 of 19 comparable parameters are identical.

See all 8 differences
How alike are they
11 of 19 comparable
parameters are identical
identical differs
01

What actually differs

8 of 19 parameters
Parameter NEG19RC.20Q NEG21C.20Q-760 Difference
Rated power 670 Wp 760 Wp 90 W more power
Weight 33.0 kg 38.3 kg 5.3 kg lighter
Short-circuit current 16.60 A 18.85 A 2.25 A apart
Module area 2.701 m² 3.106 m² 0.405 m² apart
Module efficiency 24.80 % 24.50 % 0.30 pp more efficient
Power density 248.0 Wp/m² 244.7 Wp/m² 3.4 Wp/m² higher
Current at max power 15.94 A 17.72 A 1.78 A apart
Dimensions 2382x1134x30 mm 2384x1303x33 mm 2382x1134x30 mm vs 2384x1303x33 mm
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.
NEG19RC.20Q
22,655 kWh
NEG21C.20Q-760
25,698 kWh
Lifetime gap
3,043 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario NEG19RC.20Q NEG21C.20Q-760
Standard test conditions 25 °C 100.0% of rated power 670 W 760 W
Cool, bright day 40 °C 96.1% of rated power 644 W 730 W
Typical summer roof 55 °C 92.2% of rated power 618 W 701 W
Hot roof 70 °C 88.3% of rated power 592 W 671 W
03

Full specification

Parameter NEG19RC.20Q NEG21C.20Q-760 Difference
Power and efficiency
Rated power 670 Wp 760 Wp +90 W for NEG21C.20Q-760
Module efficiency 24.80 % 24.50 % +0.30 pp for NEG19RC.20Q
Power density 248.0 Wp/m² 244.7 Wp/m² +3.4 Wp/m² for NEG19RC.20Q
Open-circuit voltage 50.95 V 50.90 V Effectively the same
Voltage at max power 42.04 V 42.90 V Effectively the same
Short-circuit current 16.60 A 18.85 A 2.25 A apart
Current at max power 15.94 A 17.72 A 1.78 A apart
Temperature
Temperature coefficient -0.260 %/°C -0.260 %/°C Same
Mechanical
Dimensions 2382x1134x30 mm 2384x1303x33 mm 2382x1134x30 mm vs 2384x1303x33 mm
Module area 2.701 m² 3.106 m² 0.405 m² apart
Weight 33.0 kg 38.3 kg -5.3 kg for NEG19RC.20Q
Weight per kWp 49.3 kg/kWp 50.4 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

Against the whole database

14,129 panels
Efficiency
#13 vs #82
NEG19RC.20Q leads by 69 places
Power density
#15 vs #98
NEG19RC.20Q leads by 83 places
Heat behaviour
#515 vs #515
Tied - the same position in the database
Weight
#2,832 vs #3,797
NEG19RC.20Q leads by 965 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#497 vs #66
NEG21C.20Q-760 leads by 431 places
05

More useful comparisons

Open the full database
Same series, other bin
Trina Solar TSM-NEG19RC.20Q vs Trina Solar TSM-NEG21C.20Q-755
8 differences, the largest is rated power
Same series, other bin
Trina Solar TSM-NEG19RC.20Q vs Trina Solar TSM-NEG21C.20Q-750
8 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-NEG19RC.20Q vs Trina Solar TSM-NEG21C.20Q-745
9 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-NEG19RC.20Q vs Trina Solar TSM-NEG21C.20Q-740
9 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-NEG19RC.20Q vs Trina Solar TSM-NEG21C.20Q-735
10 differences, the largest is module efficiency
Same manufacturer
Trina Solar TSM-NEG19RC.20Q vs Trina Solar TSM-NEG21C.20-740
12 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Trina Solar TSM-NEG19RC.20Q or Trina Solar TSM-NEG21C.20Q-760?
According to our database: Trina Solar TSM-NEG19RC.20Q has higher module efficiency (24.80% vs 24.50%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Trina Solar TSM-NEG19RC.20Q and Trina Solar TSM-NEG21C.20Q-760?
Trina Solar TSM-NEG19RC.20Q has a module efficiency of 24.80%, while Trina Solar TSM-NEG21C.20Q-760 is 24.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Trina Solar TSM-NEG19RC.20Q use vs Trina Solar TSM-NEG21C.20Q-760?
Trina Solar TSM-NEG19RC.20Q uses TOPCon cells; Trina Solar TSM-NEG21C.20Q-760 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-NEG19RC.20Q and Trina Solar TSM-NEG21C.20Q-760?
Trina Solar TSM-NEG19RC.20Q has a 30 years power warranty; Trina Solar TSM-NEG21C.20Q-760 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-NEG19RC.20Q and Trina Solar TSM-NEG21C.20Q-760 bifacial panels?
Both Trina Solar TSM-NEG19RC.20Q and Trina Solar TSM-NEG21C.20Q-760 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.