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MNB144(HCBF)-595W vs MNB156(HCBF)-645W 11 of 19 identical Swap Change panels

Philadelphia Solar PS-MNB144(HCBF)-595W vs Philadelphia Solar PS-MNB156(HCBF)-645W

Philadelphia Solar PS-MNB144(HCBF)-595W
Philadelphia Solar
PS-MNB144(HCBF)-595W
595 Wp 23.03 % N-type Bifacial
Open panel page Datasheet PDF
VS
Philadelphia Solar PS-MNB156(HCBF)-645W
Philadelphia Solar
PS-MNB156(HCBF)-645W
645 Wp 23.08 % N-type Bifacial
Open panel page Datasheet PDF
The verdict

8 differences, and they point both ways

The largest is rated power: 50 W more power. 11 of 19 comparable parameters are identical.

See all 8 differences
How alike are they
11 of 19 comparable
parameters are identical
identical differs
01

What actually differs

8 of 19 parameters
Parameter MNB144(HCBF)-595W MNB156(HCBF)-645W Difference
Rated power 595 Wp 645 Wp 50 W more power
Weight 27.0 kg 32.5 kg 5.5 kg lighter
Open-circuit voltage 52.07 V 56.40 V 4.33 V apart
Module area 2.583 m² 2.794 m² 0.211 m² apart
Weight per kWp 45.4 kg/kWp 50.4 kg/kWp 5.0 kg/kWp lighter
Cell count 144 156 12 cells apart
Voltage at max power 44.34 V 48.00 V 3.66 V apart
Dimensions 2278x1134x30 mm 2464x1134x35 mm 2278x1134x30 mm vs 2464x1134x35 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
Same temp coeff. for both panels (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
MNB144(HCBF)-595W
19,963 kWh
MNB156(HCBF)-645W
21,641 kWh
Lifetime gap
1,678 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario MNB144(HCBF)-595W MNB156(HCBF)-645W
Standard test conditions 25 °C 100.0% of rated power 595 W 645 W
Cool, bright day 40 °C 95.7% of rated power 569 W 617 W
Typical summer roof 55 °C 91.3% of rated power 543 W 589 W
Hot roof 70 °C 87.0% of rated power 517 W 561 W
03

Full specification

Parameter MNB144(HCBF)-595W MNB156(HCBF)-645W Difference
Power and efficiency
Rated power 595 Wp 645 Wp +50 W for MNB156(HCBF)-645W
Module efficiency 23.03 % 23.08 % Effectively the same
Power density 230.3 Wp/m² 230.8 Wp/m² Effectively the same
Open-circuit voltage 52.07 V 56.40 V 4.33 V apart
Voltage at max power 44.34 V 48.00 V 3.66 V apart
Short-circuit current 14.22 A 14.22 A Same
Current at max power 13.44 A 13.44 A Same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 2278x1134x30 mm 2464x1134x35 mm 2278x1134x30 mm vs 2464x1134x35 mm
Module area 2.583 m² 2.794 m² 0.211 m² apart
Weight 27.0 kg 32.5 kg -5.5 kg for MNB144(HCBF)-595W
Weight per kWp 45.4 kg/kWp 50.4 kg/kWp -5.0 kg/kWp for MNB144(HCBF)-595W
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.40 %/yr 0.40 %/yr Same
Technology
Cell technology N-type N-type Same
Cell type Monocrystalline Monocrystalline Same
Cell count 144 156 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#1,744 vs #1,677
MNB156(HCBF)-645W leads by 67 places
Power density
#1,758 vs #1,647
MNB156(HCBF)-645W leads by 111 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#708 vs #3,767
MNB144(HCBF)-595W leads by 3,059 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#3,213 vs #1,810
MNB156(HCBF)-645W leads by 1,403 places
05

More useful comparisons

Open the full database
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Philadelphia Solar PS-MNB144(HCBF)-595W vs Philadelphia Solar PS-MNG144(HCBF)-600W
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06

Written summary

07

Questions about this pairing

Which panel is better: Philadelphia Solar PS-MNB144(HCBF)-595W or Philadelphia Solar PS-MNB156(HCBF)-645W?
According to our database: Philadelphia Solar PS-MNB156(HCBF)-645 W has higher module efficiency (23.08% vs 23.03%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Philadelphia Solar PS-MNB144(HCBF)-595W and Philadelphia Solar PS-MNB156(HCBF)-645W?
Philadelphia Solar PS-MNB144(HCBF)-595 W has a module efficiency of 23.03%, while Philadelphia Solar PS-MNB156(HCBF)-645 W is 23.08%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Philadelphia Solar PS-MNB144(HCBF)-595W use vs Philadelphia Solar PS-MNB156(HCBF)-645W?
Philadelphia Solar PS-MNB144(HCBF)-595 W uses N-type cells; Philadelphia Solar PS-MNB156(HCBF)-645 W uses N-type. 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 Philadelphia Solar PS-MNB144(HCBF)-595W and Philadelphia Solar PS-MNB156(HCBF)-645W?
Philadelphia Solar PS-MNB144(HCBF)-595 W has a 30 years power warranty; Philadelphia Solar PS-MNB156(HCBF)-645 W 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 Philadelphia Solar PS-MNB144(HCBF)-595W and Philadelphia Solar PS-MNB156(HCBF)-645W bifacial panels?
Both Philadelphia Solar PS-MNB144(HCBF)-595 W and Philadelphia Solar PS-MNB156(HCBF)-645 W are bifacial - they capture reflected light from the ground, which can add 5-15% more annual energy on ground-mount or elevated rooftop installations with a light surface beneath.

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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.