Goldi Solar GS10-T144-GF-590Wp vs Goldi Solar GS10-M156-WF-590
VS
The verdict
T144-GF-590Wp leads on the differences that matter
The largest is module efficiency: 1.74 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
T144-GF-590Wp
M156-WF-590
Difference
Module efficiency
22.84 %
21.10 %
1.74 pp more efficient
Temperature coefficient
-0.300 %/°C
-0.340 %/°C
0.040 %/°C better in heat
Power density
228.4 Wp/m²
211.3 Wp/m²
17.1 Wp/m² higher
Performance warranty
30 yrs
25 yrs
5 yrs longer
Annual degradation
0.40 %/yr
0.55 %/yr
0.15 %/yr slower
Module area
2.583 m²
2.793 m²
0.210 m² apart
Cell technology
TOPCon
PERC
TOPCon vs PERC
Cell count
144
156
12 cells apart
Bifacial
Yes
No
Yes vs No
Dimensions
2278x1134x30 mm
2465x1133x35 mm
2278x1134x30 mm vs 2465x1133x35 mm
Cell type
Monocrystalline
Polycrystalline
Monocrystalline vs Polycrystalline
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
T144-GF-590Wp
19,796 kWh
M156-WF-590
19,121 kWh
Lifetime gap
675 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
T144-GF-590Wp
M156-WF-590
Standard test conditions
25 °C
100.0% of rated power
590 W
590 W
Cool, bright day
40 °C
94.9% of rated power
563 W
560 W
Typical summer roof
55 °C
89.8% of rated power
537 W
530 W
Hot roof
70 °C
84.7% of rated power
510 W
500 W
03
Full specification
Parameter
T144-GF-590Wp
M156-WF-590
Difference
Power and efficiency
Rated power
590 Wp
590 Wp
Same
Module efficiency
22.84 %
21.10 %
+1.74 pp for T144-GF-590Wp
Power density
228.4 Wp/m²
211.3 Wp/m²
+17.1 Wp/m² for T144-GF-590Wp
Open-circuit voltage
53.13 V
53.87 V
Effectively the same
Voltage at max power
45.85 V
45.25 V
Effectively the same
Short-circuit current
13.65 A
13.93 A
Effectively the same
Current at max power
12.88 A
13.04 A
Effectively the same
Temperature
Temperature coefficient
-0.300 %/°C
-0.340 %/°C
+0.040 %/°C for T144-GF-590Wp
Mechanical
Dimensions
2278x1134x30 mm
2465x1133x35 mm
2278x1134x30 mm vs 2465x1133x35 mm
Module area
2.583 m²
2.793 m²
0.210 m² apart
Weight
31.5 kg
31.5 kg
Same
Weight per kWp
53.4 kg/kWp
53.4 kg/kWp
Same
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
30 yrs
25 yrs
+5 yrs for T144-GF-590Wp
Annual degradation
0.40 %/yr
0.55 %/yr
-0.15 %/yr for T144-GF-590Wp
Technology
Cell technology
TOPCon
PERC
TOPCon vs PERC
Cell type
Monocrystalline
Polycrystalline
Monocrystalline vs Polycrystalline
Cell count
144
156
12 cells apart
Bifacial
Yes
No
Yes vs No
04
14,005 panels
Against the whole database
Efficiency
#2,617
vs
#9,297
T144-GF-590Wp leads by 6,680 places
Power density
#2,598
vs
#9,247
T144-GF-590Wp leads by 6,649 places
Heat behaviour
#6,093
vs
#8,778
T144-GF-590Wp leads by 2,685 places
Weight
#7,293
vs
#7,293
Tied - the same position in the database
Warranty
#21
vs
#9,798
T144-GF-590Wp leads by 9,777 places
Overall
#3,739
vs
#6,818
T144-GF-590Wp leads by 3,079 places
05
Open the full database
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06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Goldi Solar GS10-T144-GF-590Wp or Goldi Solar GS10-M156-WF-590?
According to our database: Goldi Solar GS10-T144-GF-590 Wp has higher module efficiency (22.84% vs 21.10%); Goldi Solar GS10-T144-GF-590 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-T144-GF-590Wp and Goldi Solar GS10-M156-WF-590?
Goldi Solar GS10-T144-GF-590 Wp has a module efficiency of 22.84%, while Goldi Solar GS10-M156-WF-590 is 21.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Goldi Solar GS10-T144-GF-590Wp use vs Goldi Solar GS10-M156-WF-590?
Goldi Solar GS10-T144-GF-590 Wp uses TOPCon cells; Goldi Solar GS10-M156-WF-590 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-T144-GF-590Wp and Goldi Solar GS10-M156-WF-590?
Goldi Solar GS10-T144-GF-590 Wp has a 30 years power warranty; Goldi Solar GS10-M156-WF-590 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.
Are Goldi Solar GS10-T144-GF-590Wp and Goldi Solar GS10-M156-WF-590 bifacial panels?
Goldi Solar GS10-T144-GF-590 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.