Goldi Solar GS10-M156-WF-590 vs Goldi Solar GS10-M156-WF-585
VS
The verdict
590 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 differenceHow alike are they
18
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
1 of 19 parameters
What actually differs
Parameter
590
585
Difference
Module efficiency
21.10 %
20.90 %
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 (-0.340 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
590
19,121 kWh
585
18,959 kWh
Lifetime gap
162 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
590
585
Standard test conditions
25 °C
100.0% of rated power
590 W
585 W
Cool, bright day
40 °C
94.9% of rated power
560 W
555 W
Typical summer roof
55 °C
89.8% of rated power
530 W
525 W
Hot roof
70 °C
84.7% of rated power
500 W
495 W
03
Full specification
Parameter
590
585
Difference
Power and efficiency
Rated power
590 Wp
585 Wp
Effectively the same
Module efficiency
21.10 %
20.90 %
+0.20 pp for 590
Power density
211.3 Wp/m²
209.5 Wp/m²
Effectively the same
Open-circuit voltage
53.87 V
53.73 V
Effectively the same
Voltage at max power
45.25 V
45.11 V
Effectively the same
Short-circuit current
13.93 A
13.86 A
Effectively the same
Current at max power
13.04 A
12.97 A
Effectively the same
Temperature
Temperature coefficient
-0.340 %/°C
-0.340 %/°C
Same
Mechanical
Dimensions
2465x1133x35 mm
2465x1133x35 mm
Same
Module area
2.793 m²
2.793 m²
Same
Weight
31.5 kg
31.5 kg
Same
Weight per kWp
53.4 kg/kWp
53.8 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
25 yrs
25 yrs
Same
Annual degradation
0.55 %/yr
0.55 %/yr
Same
Technology
Cell technology
PERC
PERC
Same
Cell type
Polycrystalline
Polycrystalline
Same
Cell count
156
156
Same
Bifacial
No
No
Same
04
14,005 panels
Against the whole database
Efficiency
#9,297
vs
#10,072
590 leads by 775 places
Power density
#9,247
vs
#9,957
590 leads by 710 places
Heat behaviour
#8,778
vs
#8,778
Tied - the same position in the database
Weight
#7,293
vs
#7,897
590 leads by 604 places
Warranty
#9,798
vs
#9,798
Tied - the same position in the database
Overall
#6,818
vs
#7,235
590 leads by 417 places
05
Open the full database
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06
Written summary
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07
Questions about this pairing
Which panel is better: Goldi Solar GS10-M156-WF-590 or Goldi Solar GS10-M156-WF-585?
According to our database: Goldi Solar GS10-M156-WF-590 has higher module efficiency (21.10% vs 20.90%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Goldi Solar GS10-M156-WF-590 and Goldi Solar GS10-M156-WF-585?
Goldi Solar GS10-M156-WF-590 has a module efficiency of 21.10%, while Goldi Solar GS10-M156-WF-585 is 20.90%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Goldi Solar GS10-M156-WF-590 use vs Goldi Solar GS10-M156-WF-585?
Goldi Solar GS10-M156-WF-590 uses PERC cells; Goldi Solar GS10-M156-WF-585 uses PERC. 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 GS10-M156-WF-590 and Goldi Solar GS10-M156-WF-585?
Goldi Solar GS10-M156-WF-590 has a 25 years power warranty; Goldi Solar GS10-M156-WF-585 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.
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.