Goldi Solar GS10-M156-WF-590 vs Goldi Solar GS10-T144-GF-595Wp
VS
The verdict
T144-GF-595Wp leads on the differences that matter
The largest is module efficiency: 1.93 pp more efficient. 8 of 19 comparable parameters are identical.
See all 11 differencesHow alike are they
8
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
11 of 19 parameters
What actually differs
Parameter
M156-WF-590
T144-GF-595Wp
Difference
Module efficiency
21.10 %
23.03 %
1.93 pp more efficient
Temperature coefficient
-0.340 %/°C
-0.300 %/°C
0.040 %/°C better in heat
Power density
211.3 Wp/m²
230.3 Wp/m²
19.1 Wp/m² higher
Performance warranty
25 yrs
30 yrs
5 yrs longer
Annual degradation
0.55 %/yr
0.40 %/yr
0.15 %/yr slower
Module area
2.793 m²
2.583 m²
0.210 m² apart
Cell technology
PERC
TOPCon
PERC vs TOPCon
Cell count
156
144
12 cells apart
Bifacial
No
Yes
No vs Yes
Dimensions
2465x1133x35 mm
2278x1134x30 mm
2465x1133x35 mm vs 2278x1134x30 mm
Cell type
Polycrystalline
Monocrystalline
Polycrystalline vs Monocrystalline
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
M156-WF-590
19,121 kWh
T144-GF-595Wp
19,963 kWh
Lifetime gap
842 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
M156-WF-590
T144-GF-595Wp
Standard test conditions
25 °C
100.0% of rated power
590 W
595 W
Cool, bright day
40 °C
94.9% of rated power
560 W
568 W
Typical summer roof
55 °C
89.8% of rated power
530 W
541 W
Hot roof
70 °C
84.7% of rated power
500 W
515 W
03
Full specification
Parameter
M156-WF-590
T144-GF-595Wp
Difference
Power and efficiency
Rated power
590 Wp
595 Wp
Effectively the same
Module efficiency
21.10 %
23.03 %
+1.93 pp for T144-GF-595Wp
Power density
211.3 Wp/m²
230.3 Wp/m²
+19.1 Wp/m² for T144-GF-595Wp
Open-circuit voltage
53.87 V
53.17 V
Effectively the same
Voltage at max power
45.25 V
45.95 V
Effectively the same
Short-circuit current
13.93 A
13.66 A
Effectively the same
Current at max power
13.04 A
12.95 A
Effectively the same
Temperature
Temperature coefficient
-0.340 %/°C
-0.300 %/°C
+0.040 %/°C for T144-GF-595Wp
Mechanical
Dimensions
2465x1133x35 mm
2278x1134x30 mm
2465x1133x35 mm vs 2278x1134x30 mm
Module area
2.793 m²
2.583 m²
0.210 m² apart
Weight
31.5 kg
31.5 kg
Same
Weight per kWp
53.4 kg/kWp
52.9 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
25 yrs
30 yrs
+5 yrs for T144-GF-595Wp
Annual degradation
0.55 %/yr
0.40 %/yr
-0.15 %/yr for T144-GF-595Wp
Technology
Cell technology
PERC
TOPCon
PERC vs TOPCon
Cell type
Polycrystalline
Monocrystalline
Polycrystalline vs Monocrystalline
Cell count
156
144
12 cells apart
Bifacial
No
Yes
No vs Yes
04
14,005 panels
Against the whole database
Efficiency
#9,297
vs
#1,744
T144-GF-595Wp leads by 7,553 places
Power density
#9,247
vs
#1,758
T144-GF-595Wp leads by 7,489 places
Heat behaviour
#8,778
vs
#6,093
T144-GF-595Wp leads by 2,685 places
Weight
#7,293
vs
#6,657
T144-GF-595Wp leads by 636 places
Warranty
#9,798
vs
#21
T144-GF-595Wp leads by 9,777 places
Overall
#6,818
vs
#3,329
T144-GF-595Wp leads by 3,489 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-T144-GF-595Wp?
According to our database: Goldi Solar GS10-T144-GF-595 Wp has higher module efficiency (23.03% vs 21.10%); Goldi Solar GS10-T144-GF-595 Wp tolerates heat better (temp coeff -0.300%/°C vs -0.340%/°C). 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-T144-GF-595Wp?
Goldi Solar GS10-M156-WF-590 has a module efficiency of 21.10%, while Goldi Solar GS10-T144-GF-595 Wp is 23.03%. 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-T144-GF-595Wp?
Goldi Solar GS10-M156-WF-590 uses PERC cells; Goldi Solar GS10-T144-GF-595 Wp 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 GS10-M156-WF-590 and Goldi Solar GS10-T144-GF-595Wp?
Goldi Solar GS10-M156-WF-590 has a 25 years power warranty; Goldi Solar GS10-T144-GF-595 Wp 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 GS10-M156-WF-590 and Goldi Solar GS10-T144-GF-595Wp bifacial panels?
Goldi Solar GS10-T144-GF-595 Wp is bifacial (captures light from both faces); Goldi Solar GS10-M156-WF-590 is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.
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.