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730 vs 725 18 of 19 identical Swap Change panels

Trina Solar TSM-NEG21C.20-730 vs Trina Solar TSM-NEG21C.20-725

Trina Solar TSM-NEG21C.20-730
TSM-NEG21C.20-730
730 Wp 23.50 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Trina Solar TSM-NEG21C.20-725
TSM-NEG21C.20-725
725 Wp 23.30 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

730 leads on the differences that matter

The largest is module efficiency: 0.20 pp more efficient. 18 of 19 comparable parameters are identical.

See the one difference
How alike are they
18 of 19 comparable
parameters are identical
identical differs
01

What actually differs

1 of 19 parameters
Parameter 730 725 Difference
Module efficiency 23.50 % 23.30 % 0.20 pp more efficient
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.
730
24,493 kWh
725
24,325 kWh
Lifetime gap
168 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 730 725
Standard test conditions 25 °C 100.0% of rated power 730 W 725 W
Cool, bright day 40 °C 95.7% of rated power 698 W 693 W
Typical summer roof 55 °C 91.3% of rated power 666 W 662 W
Hot roof 70 °C 87.0% of rated power 635 W 630 W
03

Full specification

Parameter 730 725 Difference
Power and efficiency
Rated power 730 Wp 725 Wp Effectively the same
Module efficiency 23.50 % 23.30 % +0.20 pp for 730
Power density 235.0 Wp/m² 233.4 Wp/m² Effectively the same
Open-circuit voltage 49.90 V 49.60 V Effectively the same
Voltage at max power 41.70 V 41.50 V Effectively the same
Short-circuit current 18.58 A 18.54 A Effectively the same
Current at max power 17.51 A 17.47 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°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 52.5 kg/kWp 52.8 kg/kWp Effectively the same
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.40 %/yr 0.40 %/yr Same
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#716 vs #1,017
730 leads by 301 places
Power density
#800 vs #936
730 leads by 136 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#5,993 vs #6,514
730 leads by 521 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#312 vs #424
730 leads by 112 places
05

More useful comparisons

Open the full database
Same series, other bin
Trina Solar TSM-NEG21C.20-730 vs Trina Solar TSM-NEG21C.20-740
3 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-NEG21C.20-730 vs Trina Solar TSM-NEG21C.20-735
One difference: module efficiency
Same series, other bin
Trina Solar TSM-NEG21C.20-730 vs Trina Solar TSM-NEG21C.20-720
3 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-NEG21C.20-730 vs Trina Solar TSM-NEG21C.20-715
3 differences, the largest is module efficiency
Same manufacturer
Trina Solar TSM-NEG21C.20-730 vs Trina Solar TSM-NEG21C.20Q-760
9 differences, the largest is module efficiency
Same manufacturer
Trina Solar TSM-NEG21C.20-730 vs Trina Solar TSM-NEG21C.20Q-755
7 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Trina Solar TSM-NEG21C.20-730 or Trina Solar TSM-NEG21C.20-725?
According to our database: Trina Solar TSM-NEG21C.20-730 has higher module efficiency (23.50% vs 23.30%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Trina Solar TSM-NEG21C.20-730 and Trina Solar TSM-NEG21C.20-725?
Trina Solar TSM-NEG21C.20-730 has a module efficiency of 23.50%, while Trina Solar TSM-NEG21C.20-725 is 23.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Trina Solar TSM-NEG21C.20-730 use vs Trina Solar TSM-NEG21C.20-725?
Trina Solar TSM-NEG21C.20-730 uses TOPCon cells; Trina Solar TSM-NEG21C.20-725 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.20-730 and Trina Solar TSM-NEG21C.20-725?
Trina Solar TSM-NEG21C.20-730 has a 30 years power warranty; Trina Solar TSM-NEG21C.20-725 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.20-730 and Trina Solar TSM-NEG21C.20-725 bifacial panels?
Both Trina Solar TSM-NEG21C.20-730 and Trina Solar TSM-NEG21C.20-725 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.

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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.