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STP-NT11/48QGDF-475 vs STP730S-D66-Nsh+ 5 of 19 identical Swap Change panels

Suntech STP-NT11/48QGDF-475 vs Suntech STP730S-D66-Nsh+

Suntech STP-NT11/48QGDF-475
STP-NT11/48QGDF-475
475 Wp 23.80 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Suntech STP730S-D66-Nsh+
STP730S-D66-Nsh+
730 Wp 23.50 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

STP-NT11/48QGDF-475 leads on the differences that matter

The largest is rated power: 255 W more power. 5 of 19 comparable parameters are identical.

See all 14 differences
How alike are they
5 of 19 comparable
parameters are identical
identical differs
01

What actually differs

14 of 19 parameters
Parameter STP-NT11/48QGDF-475 STP730S-D66-Nsh+ Difference
Rated power 475 Wp 730 Wp 255 W more power
Weight 21.5 kg 37.5 kg 16.0 kg lighter
Product warranty 25 yrs 15 yrs 10 yrs longer
Temperature coefficient -0.260 %/°C -0.280 %/°C 0.020 %/°C better in heat
Weight per kWp 45.3 kg/kWp 51.4 kg/kWp 6.1 kg/kWp lighter
Open-circuit voltage 36.53 V 49.66 V 13.13 V apart
Short-circuit current 16.43 A 18.54 A 2.11 A apart
Module area 1.998 m² 3.106 m² 1.108 m² apart
Module efficiency 23.80 % 23.50 % 0.30 pp more efficient
Annual degradation 0.35 %/yr 0.40 %/yr 0.05 %/yr slower
Voltage at max power 30.43 V 41.27 V 10.84 V apart
Current at max power 15.62 A 17.70 A 2.08 A apart
Cell count 192 132 60 cells apart
Dimensions 1762x1134x30 mm 2384x1303x33 mm 1762x1134x30 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
STP-NT11/48QGDF-475
16,061 kWh
STP730S-D66-Nsh+
24,493 kWh
Lifetime gap
8,432 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario STP-NT11/48QGDF-475 STP730S-D66-Nsh+
Standard test conditions 25 °C 100.0% of rated power 475 W 730 W
Cool, bright day 40 °C 95.8% of rated power 456 W 699 W
Typical summer roof 55 °C 91.6% of rated power 438 W 669 W
Hot roof 70 °C 87.4% of rated power 419 W 638 W
03

Full specification

Parameter STP-NT11/48QGDF-475 STP730S-D66-Nsh+ Difference
Power and efficiency
Rated power 475 Wp 730 Wp +255 W for STP730S-D66-Nsh+
Module efficiency 23.80 % 23.50 % +0.30 pp for STP-NT11/48QGDF-475
Power density 237.7 Wp/m² 235.0 Wp/m² Effectively the same
Open-circuit voltage 36.53 V 49.66 V 13.13 V apart
Voltage at max power 30.43 V 41.27 V 10.84 V apart
Short-circuit current 16.43 A 18.54 A 2.11 A apart
Current at max power 15.62 A 17.70 A 2.08 A apart
Temperature
Temperature coefficient -0.260 %/°C -0.280 %/°C +0.020 %/°C for STP-NT11/48QGDF-475
Mechanical
Dimensions 1762x1134x30 mm 2384x1303x33 mm 1762x1134x30 mm vs 2384x1303x33 mm
Module area 1.998 m² 3.106 m² 1.108 m² apart
Weight 21.5 kg 37.5 kg -16.0 kg for STP-NT11/48QGDF-475
Weight per kWp 45.3 kg/kWp 51.4 kg/kWp -6.1 kg/kWp for STP-NT11/48QGDF-475
Warranty and degradation
Product warranty 25 yrs 15 yrs +10 yrs for STP-NT11/48QGDF-475
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.35 %/yr 0.40 %/yr -0.05 %/yr for STP-NT11/48QGDF-475
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 192 132 60 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#433 vs #716
STP-NT11/48QGDF-475 leads by 283 places
Power density
#467 vs #800
STP-NT11/48QGDF-475 leads by 333 places
Heat behaviour
#511 vs #1,309
STP-NT11/48QGDF-475 leads by 798 places
Weight
#669 vs #4,748
STP-NT11/48QGDF-475 leads by 4,079 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#3,753 vs #196
STP730S-D66-Nsh+ leads by 3,557 places
05

More useful comparisons

Open the full database
Same series, other bin
Suntech STP-NT11/48QGDF-475 vs Suntech STP-NT11/66QGDF-670
11 differences, the largest is module efficiency
Same series, other bin
Suntech STP-NT11/48QGDF-475 vs Suntech STP-NT11/66QGDF-665
11 differences, the largest is module efficiency
Same series, other bin
Suntech STP-NT11/48QGDF-475 vs Suntech STP-NT11/66QGDF-660
11 differences, the largest is rated power
Same series, other bin
Suntech STP-NT11/48QGDF-475 vs Suntech STP-NT11/66QGDF-655
11 differences, the largest is rated power
Same series, other bin
Suntech STP-NT11/48QGDF-475 vs Suntech STP-NT11/66QGDF-650
10 differences, the largest is rated power
Same series, other bin
Suntech STP-NT11/48QGDF-475 vs Suntech STP-NT11/66QGDF-645
9 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: Suntech STP-NT11/48QGDF-475 or Suntech STP730S-D66-Nsh+?
According to our database: Suntech STP-NT11/48QGDF-475 has higher module efficiency (23.80% vs 23.50%); Suntech STP-NT11/48QGDF-475 tolerates heat better (temp coeff -0.260%/°C vs -0.280%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Suntech STP-NT11/48QGDF-475 and Suntech STP730S-D66-Nsh+?
Suntech STP-NT11/48QGDF-475 has a module efficiency of 23.80%, while Suntech STP730S-D66-Nsh+ is 23.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Suntech STP-NT11/48QGDF-475 use vs Suntech STP730S-D66-Nsh+?
Suntech STP-NT11/48QGDF-475 uses TOPCon cells; Suntech STP730S-D66-Nsh+ 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 Suntech STP-NT11/48QGDF-475 and Suntech STP730S-D66-Nsh+?
Suntech STP-NT11/48QGDF-475 has a 30 years power warranty; Suntech STP730S-D66-Nsh+ 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 Suntech STP-NT11/48QGDF-475 and Suntech STP730S-D66-Nsh+ bifacial panels?
Both Suntech STP-NT11/48QGDF-475 and Suntech STP730S-D66-Nsh+ 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 31 Suntech 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.