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T144-GF-595Wp vs M156-WF-585 7 of 19 identical Swap Change panels

Goldi Solar GS10-T144-GF-595Wp vs Goldi Solar GS10-M156-WF-585

Goldi Solar GS10-T144-GF-595Wp
Goldi Solar
GS10-T144-GF-595Wp
595 Wp 23.03 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Goldi Solar GS10-M156-WF-585
Goldi Solar
GS10-M156-WF-585
585 Wp 20.90 % PERC
Open panel page Datasheet PDF
The verdict

T144-GF-595Wp leads on the differences that matter

The largest is module efficiency: 2.13 pp more efficient. 7 of 19 comparable parameters are identical.

See all 12 differences
How alike are they
7 of 19 comparable
parameters are identical
identical differs
01

What actually differs

12 of 19 parameters
Parameter T144-GF-595Wp M156-WF-585 Difference
Module efficiency 23.03 % 20.90 % 2.13 pp more efficient
Temperature coefficient -0.300 %/°C -0.340 %/°C 0.040 %/°C better in heat
Power density 230.3 Wp/m² 209.5 Wp/m² 20.9 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
Rated power 595 Wp 585 Wp 10 W more power
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-595Wp
19,963 kWh
M156-WF-585
18,959 kWh
Lifetime gap
1,004 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario T144-GF-595Wp M156-WF-585
Standard test conditions 25 °C 100.0% of rated power 595 W 585 W
Cool, bright day 40 °C 94.9% of rated power 568 W 555 W
Typical summer roof 55 °C 89.8% of rated power 541 W 525 W
Hot roof 70 °C 84.7% of rated power 515 W 495 W
03

Full specification

Parameter T144-GF-595Wp M156-WF-585 Difference
Power and efficiency
Rated power 595 Wp 585 Wp +10 W for T144-GF-595Wp
Module efficiency 23.03 % 20.90 % +2.13 pp for T144-GF-595Wp
Power density 230.3 Wp/m² 209.5 Wp/m² +20.9 Wp/m² for T144-GF-595Wp
Open-circuit voltage 53.17 V 53.73 V Effectively the same
Voltage at max power 45.95 V 45.11 V Effectively the same
Short-circuit current 13.66 A 13.86 A Effectively the same
Current at max power 12.95 A 12.97 A Effectively the same
Temperature
Temperature coefficient -0.300 %/°C -0.340 %/°C +0.040 %/°C for T144-GF-595Wp
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 52.9 kg/kWp 53.8 kg/kWp Effectively the same
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 30 yrs 25 yrs +5 yrs for T144-GF-595Wp
Annual degradation 0.40 %/yr 0.55 %/yr -0.15 %/yr for T144-GF-595Wp
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

Against the whole database

14,005 panels
Efficiency
#1,744 vs #10,072
T144-GF-595Wp leads by 8,328 places
Power density
#1,758 vs #9,957
T144-GF-595Wp leads by 8,199 places
Heat behaviour
#6,093 vs #8,778
T144-GF-595Wp leads by 2,685 places
Weight
#6,657 vs #7,897
T144-GF-595Wp leads by 1,240 places
Warranty
#21 vs #9,798
T144-GF-595Wp leads by 9,777 places
Overall
#3,329 vs #7,235
T144-GF-595Wp leads by 3,906 places
05

More useful comparisons

Open the full database
Same series, other bin
Goldi Solar
Goldi Solar GS10-T144-GF-595Wp vs Goldi Solar GS10-M156-WF-600
11 differences, the largest is module efficiency
Same series, other bin
Goldi Solar
Goldi Solar GS10-T144-GF-595Wp vs Goldi Solar GS10-M156-WF-595
11 differences, the largest is module efficiency
Same series, other bin
Goldi Solar
Goldi Solar GS10-T144-GF-595Wp vs Goldi Solar GS10-M156-WF-590
11 differences, the largest is module efficiency
Same series, other bin
Goldi Solar
Goldi Solar GS10-T144-GF-595Wp vs Goldi Solar GS10-T144-GF-590Wp
The same specification on paper
Same series, other bin
Goldi Solar
Goldi Solar GS10-T144-GF-595Wp vs Goldi Solar GS10-T144-GF-585Wp
3 differences, the largest is module efficiency
Same series, other bin
Goldi Solar
Goldi Solar GS10-T144-GF-595Wp vs Goldi Solar GS10-M156-WF-580
12 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Goldi Solar GS10-T144-GF-595Wp or Goldi Solar GS10-M156-WF-585?
According to our database: Goldi Solar GS10-T144-GF-595 Wp has higher module efficiency (23.03% vs 20.90%); 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-T144-GF-595Wp and Goldi Solar GS10-M156-WF-585?
Goldi Solar GS10-T144-GF-595 Wp has a module efficiency of 23.03%, 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-T144-GF-595Wp use vs Goldi Solar GS10-M156-WF-585?
Goldi Solar GS10-T144-GF-595 Wp uses TOPCon 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-T144-GF-595Wp and Goldi Solar GS10-M156-WF-585?
Goldi Solar GS10-T144-GF-595 Wp has a 30 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.
Are Goldi Solar GS10-T144-GF-595Wp and Goldi Solar GS10-M156-WF-585 bifacial panels?
Goldi Solar GS10-T144-GF-595 Wp is bifacial (captures light from both faces); Goldi Solar GS10-M156-WF-585 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.