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8M132-HC-645W vs 7M144N-HC-590 4 of 19 identical Swap Change panels

Amerisolar AS-8M132-HC-645W vs Amerisolar AS-7M144N-HC-590

Amerisolar
AS-8M132-HC-645W
645 Wp 20.76 % PERC
Open panel page Datasheet PDF
VS
Amerisolar
AS-7M144N-HC-590
590 Wp 22.83 % TOPCon
Open panel page Datasheet PDF
The verdict

7M144N-HC-590 leads on the differences that matter

The largest is module efficiency: 2.07 pp more efficient. 4 of 19 comparable parameters are identical.

See all 15 differences
How alike are they
4 of 19 comparable
parameters are identical
identical differs
01

What actually differs

15 of 19 parameters
Parameter 8M132-HC-645W 7M144N-HC-590 Difference
Module efficiency 20.76 % 22.83 % 2.07 pp more efficient
Temperature coefficient -0.340 %/°C -0.300 %/°C 0.040 %/°C better in heat
Rated power 645 Wp 590 Wp 55 W more power
Power density 207.6 Wp/m² 228.3 Wp/m² 20.7 Wp/m² higher
Annual degradation 0.60 %/yr 0.40 %/yr 0.20 %/yr slower
Weight 34.0 kg 27.5 kg 6.5 kg lighter
Weight per kWp 52.7 kg/kWp 46.6 kg/kWp 6.1 kg/kWp lighter
Open-circuit voltage 45.30 V 51.60 V 6.30 V apart
Short-circuit current 18.31 A 14.34 A 3.97 A apart
Module area 3.106 m² 2.584 m² 0.522 m² apart
Cell technology PERC TOPCon PERC vs TOPCon
Voltage at max power 37.50 V 43.40 V 5.90 V apart
Current at max power 17.20 A 13.59 A 3.61 A apart
Cell count 132 144 12 cells apart
Dimensions 2384x1303x35 mm 2279x1134x30 mm 2384x1303x35 mm vs 2279x1134x30 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
8M132-HC-645W
20,619 kWh
7M144N-HC-590
19,796 kWh
Lifetime gap
823 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 8M132-HC-645W 7M144N-HC-590
Standard test conditions 25 °C 100.0% of rated power 645 W 590 W
Cool, bright day 40 °C 94.9% of rated power 612 W 563 W
Typical summer roof 55 °C 89.8% of rated power 579 W 537 W
Hot roof 70 °C 84.7% of rated power 546 W 510 W
03

Full specification

Parameter 8M132-HC-645W 7M144N-HC-590 Difference
Power and efficiency
Rated power 645 Wp 590 Wp +55 W for 8M132-HC-645W
Module efficiency 20.76 % 22.83 % +2.07 pp for 7M144N-HC-590
Power density 207.6 Wp/m² 228.3 Wp/m² +20.7 Wp/m² for 7M144N-HC-590
Open-circuit voltage 45.30 V 51.60 V 6.30 V apart
Voltage at max power 37.50 V 43.40 V 5.90 V apart
Short-circuit current 18.31 A 14.34 A 3.97 A apart
Current at max power 17.20 A 13.59 A 3.61 A apart
Temperature
Temperature coefficient -0.340 %/°C -0.300 %/°C +0.040 %/°C for 7M144N-HC-590
Mechanical
Dimensions 2384x1303x35 mm 2279x1134x30 mm 2384x1303x35 mm vs 2279x1134x30 mm
Module area 3.106 m² 2.584 m² 0.522 m² apart
Weight 34.0 kg 27.5 kg -6.5 kg for 7M144N-HC-590
Weight per kWp 52.7 kg/kWp 46.6 kg/kWp -6.1 kg/kWp for 7M144N-HC-590
Warranty and degradation
Product warranty 20 yrs 20 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.60 %/yr 0.40 %/yr -0.20 %/yr for 7M144N-HC-590
Technology
Cell technology PERC TOPCon PERC vs TOPCon
Cell type Monocrystalline Monocrystalline Same
Cell count 132 144 12 cells apart
Bifacial No No Same
04

Against the whole database

14,129 panels
Efficiency
#10,690 vs #2,738
7M144N-HC-590 leads by 7,952 places
Power density
#10,638 vs #2,786
7M144N-HC-590 leads by 7,852 places
Heat behaviour
#8,846 vs #6,152
7M144N-HC-590 leads by 2,694 places
Weight
#6,416 vs #1,250
7M144N-HC-590 leads by 5,166 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#2,596 vs #2,157
7M144N-HC-590 leads by 439 places
05

More useful comparisons

Open the full database
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06

Written summary

07

Questions about this pairing

Which panel is better: Amerisolar AS-8M132-HC-645W or Amerisolar AS-7M144N-HC-590?
According to our database: Amerisolar AS-7M144N-HC-590 has higher module efficiency (22.83% vs 20.76%); Amerisolar AS-7M144N-HC-590 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 Amerisolar AS-8M132-HC-645W and Amerisolar AS-7M144N-HC-590?
Amerisolar AS-8M132-HC-645 W has a module efficiency of 20.76%, while Amerisolar AS-7M144N-HC-590 is 22.83%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Amerisolar AS-8M132-HC-645W use vs Amerisolar AS-7M144N-HC-590?
Amerisolar AS-8M132-HC-645 W uses PERC cells; Amerisolar AS-7M144N-HC-590 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 Amerisolar AS-8M132-HC-645W and Amerisolar AS-7M144N-HC-590?
Amerisolar AS-8M132-HC-645 W has a 30 years power warranty; Amerisolar AS-7M144N-HC-590 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.

Shop prices: See 3 Amerisolar offers

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.