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705W vs 720W 16 of 19 identical Swap Change panels

Trina Solar TSM-NE21 705W vs Trina Solar TSM-NE21 720W

Trina Solar TSM-NE21 705W
TSM-NE21 705W
705 Wp 22.70 % TOPCon
Open panel page Datasheet PDF
VS
Trina Solar TSM-NE21 720W
TSM-NE21 720W
720 Wp 23.20 % TOPCon
Open panel page Datasheet PDF
The verdict

720W leads on the differences that matter

The largest is module efficiency: 0.50 pp more efficient. 16 of 19 comparable parameters are identical.

See all 3 differences
How alike are they
16 of 19 comparable
parameters are identical
identical differs
01

What actually differs

3 of 19 parameters
Parameter 705W 720W Difference
Module efficiency 22.70 % 23.20 % 0.50 pp more efficient
Power density 227.0 Wp/m² 231.8 Wp/m² 4.8 Wp/m² higher
Rated power 705 Wp 720 Wp 15 W more power
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.
705W
23,654 kWh
720W
24,157 kWh
Lifetime gap
503 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 705W 720W
Standard test conditions 25 °C 100.0% of rated power 705 W 720 W
Cool, bright day 40 °C 95.7% of rated power 674 W 689 W
Typical summer roof 55 °C 91.3% of rated power 644 W 657 W
Hot roof 70 °C 87.0% of rated power 613 W 626 W
03

Full specification

Parameter 705W 720W Difference
Power and efficiency
Rated power 705 Wp 720 Wp +15 W for 720W
Module efficiency 22.70 % 23.20 % +0.50 pp for 720W
Power density 227.0 Wp/m² 231.8 Wp/m² +4.8 Wp/m² for 720W
Open-circuit voltage 48.80 V 49.40 V Effectively the same
Voltage at max power 40.70 V 41.30 V Effectively the same
Short-circuit current 18.36 A 18.48 A Effectively the same
Current at max power 17.33 A 17.44 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 32.9 kg 32.9 kg Same
Weight per kWp 46.7 kg/kWp 45.7 kg/kWp Effectively the same
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 25 yrs 25 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 No No Same
04

Against the whole database

14,005 panels
Efficiency
#3,307 vs #1,306
720W leads by 2,001 places
Power density
#3,361 vs #1,347
720W leads by 2,014 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#1,258 vs #845
720W leads by 413 places
Warranty
#9,798 vs #9,798
Tied - the same position in the database
Overall
#1,478 vs #968
720W leads by 510 places
05

More useful comparisons

Open the full database
Same series, other bin
Trina Solar TSM-NE21 705W vs Trina Solar TSM-NE21 725W
3 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-NE21 705W vs Trina Solar TSM-NE21 715W
3 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-NE21 705W vs Trina Solar TSM-NE21 710W
One difference: module efficiency
Same series, other bin
Trina Solar TSM-NE21 705W vs Trina Solar TSM-NE21 700W
One difference: module efficiency
Same series, other bin
Trina Solar TSM-NE21 705W vs Trina Solar TSM-NE21 695W
3 differences, the largest is module efficiency
Same manufacturer
Trina Solar TSM-NE21 705W vs Trina Solar TSM-NEG21C.20Q-760
12 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Trina Solar TSM-NE21 705W or Trina Solar TSM-NE21 720W?
According to our database: Trina Solar TSM-NE21 720 W 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-NE21 705W and Trina Solar TSM-NE21 720W?
Trina Solar TSM-NE21 705 W has a module efficiency of 22.70%, while Trina Solar TSM-NE21 720 W is 23.20%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Trina Solar TSM-NE21 705W use vs Trina Solar TSM-NE21 720W?
Trina Solar TSM-NE21 705 W uses TOPCon cells; Trina Solar TSM-NE21 720 W 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-NE21 705W and Trina Solar TSM-NE21 720W?
Trina Solar TSM-NE21 705 W has a 25 years power warranty; Trina Solar TSM-NE21 720 W has a 25 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.

Shop prices: See 213 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.