Goldi Solar GS12-T132-GF-690 vs Goldi Solar GS12R-T132-GF-620
VS
The verdict
GS12R-T132-GF-620 leads on the differences that matter
The largest is module efficiency: 0.74 pp more efficient. 9 of 19 comparable parameters are identical.
See all 10 differencesHow alike are they
9
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
10 of 19 parameters
What actually differs
Parameter
GS12-T132-GF-690
GS12R-T132-GF-620
Difference
Module efficiency
22.21 %
22.95 %
0.74 pp more efficient
Rated power
690 Wp
620 Wp
70 W more power
Weight
38.1 kg
33.7 kg
4.4 kg lighter
Temperature coefficient
-0.280 %/°C
-0.300 %/°C
0.020 %/°C better in heat
Power density
222.1 Wp/m²
229.5 Wp/m²
7.4 Wp/m² higher
Short-circuit current
18.08 A
15.92 A
2.16 A apart
Module area
3.106 m²
2.701 m²
0.405 m² apart
Open-circuit voltage
47.24 V
49.60 V
2.36 V apart
Current at max power
17.03 A
15.09 A
1.94 A apart
Dimensions
2384x1303x33 mm
2382x1134x30 mm
2384x1303x33 mm vs 2382x1134x30 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
GS12-T132-GF-690
23,151 kWh
GS12R-T132-GF-620
20,802 kWh
Lifetime gap
2,349 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
GS12-T132-GF-690
GS12R-T132-GF-620
Standard test conditions
25 °C
100.0% of rated power
690 W
620 W
Cool, bright day
40 °C
95.5% of rated power
661 W
592 W
Typical summer roof
55 °C
91.0% of rated power
632 W
564 W
Hot roof
70 °C
86.5% of rated power
603 W
536 W
03
Full specification
Parameter
GS12-T132-GF-690
GS12R-T132-GF-620
Difference
Power and efficiency
Rated power
690 Wp
620 Wp
+70 W for GS12-T132-GF-690
Module efficiency
22.21 %
22.95 %
+0.74 pp for GS12R-T132-GF-620
Power density
222.1 Wp/m²
229.5 Wp/m²
+7.4 Wp/m² for GS12R-T132-GF-620
Open-circuit voltage
47.24 V
49.60 V
2.36 V apart
Voltage at max power
40.52 V
41.10 V
Effectively the same
Short-circuit current
18.08 A
15.92 A
2.16 A apart
Current at max power
17.03 A
15.09 A
1.94 A apart
Temperature
Temperature coefficient
-0.280 %/°C
-0.300 %/°C
+0.020 %/°C for GS12-T132-GF-690
Mechanical
Dimensions
2384x1303x33 mm
2382x1134x30 mm
2384x1303x33 mm vs 2382x1134x30 mm
Module area
3.106 m²
2.701 m²
0.405 m² apart
Weight
38.1 kg
33.7 kg
-4.4 kg for GS12R-T132-GF-620
Weight per kWp
55.2 kg/kWp
54.4 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.40 %/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
14,005 panels
Against the whole database
Efficiency
#5,754
vs
#2,268
GS12R-T132-GF-620 leads by 3,486 places
Power density
#5,734
vs
#2,191
GS12R-T132-GF-620 leads by 3,543 places
Heat behaviour
#1,309
vs
#6,093
GS12-T132-GF-690 leads by 4,784 places
Weight
#9,666
vs
#8,659
GS12R-T132-GF-620 leads by 1,007 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#1,540
vs
#2,594
GS12-T132-GF-690 leads by 1,054 places
05
Open the full database
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The same specification on paper
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06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Goldi Solar GS12-T132-GF-690 or Goldi Solar GS12R-T132-GF-620?
According to our database: Goldi Solar GS12R-T132-GF-620 has higher module efficiency (22.95% vs 22.21%); Goldi Solar GS12-T132-GF-690 tolerates heat better (temp coeff -0.280%/°C vs -0.300%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Goldi Solar GS12-T132-GF-690 and Goldi Solar GS12R-T132-GF-620?
Goldi Solar GS12-T132-GF-690 has a module efficiency of 22.21%, while Goldi Solar GS12R-T132-GF-620 is 22.95%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Goldi Solar GS12-T132-GF-690 use vs Goldi Solar GS12R-T132-GF-620?
Goldi Solar GS12-T132-GF-690 uses TOPCon cells; Goldi Solar GS12R-T132-GF-620 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 Goldi Solar GS12-T132-GF-690 and Goldi Solar GS12R-T132-GF-620?
Goldi Solar GS12-T132-GF-690 has a 30 years power warranty; Goldi Solar GS12R-T132-GF-620 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 Goldi Solar GS12-T132-GF-690 and Goldi Solar GS12R-T132-GF-620 bifacial panels?
Both Goldi Solar GS12-T132-GF-690 and Goldi Solar GS12R-T132-GF-620 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.
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.