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RPS2MH72BD545 vs RPS2MH72BD540 18 of 19 identical Swap Change panels

Renew Photovoltaics RPS2MH72BD545 vs Renew Photovoltaics RPS2MH72BD540

Renew Photovoltaics
RPS2MH72BD545
545 Wp 21.10 % PERC Bifacial
Open panel page Datasheet PDF
VS
Renew Photovoltaics
RPS2MH72BD540
540 Wp 20.90 % PERC Bifacial
Open panel page Datasheet PDF
The verdict

RPS2MH72BD545 leads on the differences that matter

The largest is module efficiency: 0.20 pp more efficient. 18 of 19 comparable parameters are identical.

See the one difference
How alike are they
18 of 19 comparable
parameters are identical
identical differs
01

What actually differs

1 of 19 parameters
Parameter RPS2MH72BD545 RPS2MH72BD540 Difference
Module efficiency 21.10 % 20.90 % 0.20 pp more efficient
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 (-0.320 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
RPS2MH72BD545
17,947 kWh
RPS2MH72BD540
17,783 kWh
Lifetime gap
164 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario RPS2MH72BD545 RPS2MH72BD540
Standard test conditions 25 °C 100.0% of rated power 545 W 540 W
Cool, bright day 40 °C 95.2% of rated power 519 W 514 W
Typical summer roof 55 °C 90.4% of rated power 493 W 488 W
Hot roof 70 °C 85.6% of rated power 467 W 462 W
03

Full specification

Parameter RPS2MH72BD545 RPS2MH72BD540 Difference
Power and efficiency
Rated power 545 Wp 540 Wp Effectively the same
Module efficiency 21.10 % 20.90 % +0.20 pp for RPS2MH72BD545
Power density 211.0 Wp/m² 209.0 Wp/m² Effectively the same
Open-circuit voltage 49.71 V 49.68 V Effectively the same
Voltage at max power 40.79 V 40.66 V Effectively the same
Short-circuit current 13.94 A 13.85 A Effectively the same
Current at max power 13.37 A 13.29 A Effectively the same
Temperature
Temperature coefficient -0.320 %/°C -0.320 %/°C Same
Mechanical
Dimensions 2278x1134x30 mm 2278x1134x30 mm Same
Module area 2.583 m² 2.583 m² Same
Weight 32.5 kg 32.5 kg Same
Weight per kWp 59.6 kg/kWp 60.2 kg/kWp Effectively the same
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.45 %/yr 0.45 %/yr Same
Technology
Cell technology PERC PERC Same
Cell type Monocrystalline Monocrystalline Same
Cell count 144 144 Same
Bifacial Yes Yes Same
04

Against the whole database

14,129 panels
Efficiency
#9,365 vs #10,148
RPS2MH72BD545 leads by 783 places
Power density
#9,380 vs #10,176
RPS2MH72BD545 leads by 796 places
Heat behaviour
#8,376 vs #8,376
Tied - the same position in the database
Weight
#12,304 vs #12,476
RPS2MH72BD545 leads by 172 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#7,508 vs #7,974
RPS2MH72BD545 leads by 466 places
05

More useful comparisons

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The same specification on paper
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06

Written summary

07

Questions about this pairing

Which panel is better: Renew Photovoltaics RPS2MH72BD545 or Renew Photovoltaics RPS2MH72BD540?
According to our database: Renew Photovoltaics RPS2MH72BD545 has higher module efficiency (21.10% vs 20.90%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Renew Photovoltaics RPS2MH72BD545 and Renew Photovoltaics RPS2MH72BD540?
Renew Photovoltaics RPS2MH72BD545 has a module efficiency of 21.10%, while Renew Photovoltaics RPS2MH72BD540 is 20.90%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Renew Photovoltaics RPS2MH72BD545 use vs Renew Photovoltaics RPS2MH72BD540?
Renew Photovoltaics RPS2MH72BD545 uses PERC cells; Renew Photovoltaics RPS2MH72BD540 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 Renew Photovoltaics RPS2MH72BD545 and Renew Photovoltaics RPS2MH72BD540?
Renew Photovoltaics RPS2MH72BD545 has a 30 years power warranty; Renew Photovoltaics RPS2MH72BD540 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 Renew Photovoltaics RPS2MH72BD545 and Renew Photovoltaics RPS2MH72BD540 bifacial panels?
Both Renew Photovoltaics RPS2MH72BD545 and Renew Photovoltaics RPS2MH72BD540 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.

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.