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REC Alpha Pure-RX 470 Wp vs REC620AA Pro MG 3 of 18 identical Swap Change panels

REC REC Alpha Pure-RX 470 Wp vs REC REC620AA Pro MG

REC REC Alpha Pure-RX 470 Wp
REC
REC Alpha Pure-RX 470 Wp
470 Wp 22.60 % HJT
Open panel page Datasheet PDF
VS
REC REC620AA Pro MG
REC
REC620AA Pro MG
620 Wp 21.80 % HJT Bifacial
Open panel page Datasheet PDF
The verdict

15 differences, and they point both ways

The largest is module efficiency: 0.80 pp more efficient. 3 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 15 differences
How alike are they
3 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

15 of 18 parameters
Parameter REC Alpha Pure-RX 470 Wp REC620AA Pro MG Difference
Module efficiency 22.60 % 21.80 % 0.80 pp more efficient
Rated power 470 Wp 620 Wp 150 W more power
Performance warranty 25 yrs 30 yrs 5 yrs longer
Weight 23.4 kg 36.8 kg 13.4 kg lighter
Weight per kWp 49.8 kg/kWp 59.4 kg/kWp 9.6 kg/kWp lighter
Product warranty 25 yrs 30 yrs 5 yrs longer
Power density 226.0 Wp/m² 218.4 Wp/m² 7.6 Wp/m² higher
Open-circuit voltage 65.70 V 44.60 V 21.10 V apart
Short-circuit current 8.95 A 17.67 A 8.72 A apart
Module area 2.079 m² 2.838 m² 0.759 m² apart
Annual degradation 0.33 %/yr 0.25 %/yr 0.08 %/yr slower
Voltage at max power 55.40 V 36.60 V 18.80 V apart
Current at max power 8.49 A 16.94 A 8.45 A apart
Bifacial No Yes No vs Yes
Dimensions 1727x1204x31 mm 2175x1305x30 mm 1727x1204x31 mm vs 2175x1305x30 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 (-0.240 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
REC Alpha Pure-RX 470 Wp
16,108 kWh
REC620AA Pro MG
21,065 kWh
Lifetime gap
4,957 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario REC Alpha Pure-RX 470 Wp REC620AA Pro MG
Standard test conditions 25 °C 100.0% of rated power 470 W 620 W
Cool, bright day 40 °C 96.4% of rated power 453 W 598 W
Typical summer roof 55 °C 92.8% of rated power 436 W 575 W
Hot roof 70 °C 89.2% of rated power 419 W 553 W
03

Full specification

Parameter REC Alpha Pure-RX 470 Wp REC620AA Pro MG Difference
Power and efficiency
Rated power 470 Wp 620 Wp +150 W for REC620AA Pro MG
Module efficiency 22.60 % 21.80 % +0.80 pp for REC Alpha Pure-RX 470 Wp
Power density 226.0 Wp/m² 218.4 Wp/m² +7.6 Wp/m² for REC Alpha Pure-RX 470 Wp
Open-circuit voltage 65.70 V 44.60 V 21.10 V apart
Voltage at max power 55.40 V 36.60 V 18.80 V apart
Short-circuit current 8.95 A 17.67 A 8.72 A apart
Current at max power 8.49 A 16.94 A 8.45 A apart
Temperature
Temperature coefficient -0.240 %/°C -0.240 %/°C Same
Mechanical
Dimensions 1727x1204x31 mm 2175x1305x30 mm 1727x1204x31 mm vs 2175x1305x30 mm
Module area 2.079 m² 2.838 m² 0.759 m² apart
Weight 23.4 kg 36.8 kg -13.4 kg for REC Alpha Pure-RX 470 Wp
Weight per kWp 49.8 kg/kWp 59.4 kg/kWp -9.6 kg/kWp for REC Alpha Pure-RX 470 Wp
Warranty and degradation
Product warranty 25 yrs 30 yrs +5 yrs for REC620AA Pro MG
Performance warranty 25 yrs 30 yrs +5 yrs for REC620AA Pro MG
Annual degradation 0.33 %/yr 0.25 %/yr -0.08 %/yr for REC620AA Pro MG
Technology
Cell technology HJT HJT Same
Cell type Monocrystalline Monocrystalline Same
Cell count - 120 Not published by REC
Bifacial No Yes No vs Yes
04

Against the whole database

14,269 panels
Efficiency
#3,785 vs #7,178
REC Alpha Pure-RX 470 Wp leads by 3,393 places
Power density
#3,837 vs #7,108
REC Alpha Pure-RX 470 Wp leads by 3,271 places
Heat behaviour
#13 vs #13
Tied - the same position in the database
Weight
#3,262 vs #12,317
REC Alpha Pure-RX 470 Wp leads by 9,055 places
Warranty
#10,001 vs #31
REC620AA Pro MG leads by 9,970 places
Overall
#6,534 vs #1,203
REC620AA Pro MG leads by 5,331 places
05

More useful comparisons

Open the full database
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REC REC Alpha Pure-RX 470 Wp vs REC REC470AA Pure-RX
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REC REC Alpha Pure-RX 470 Wp vs REC REC Alpha Pure-RX 470
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REC REC Alpha Pure-RX 470 Wp vs REC REC465AA Pure-RX
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REC REC Alpha Pure-RX 470 Wp vs REC REC460AA Pure-RX
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REC REC Alpha Pure-RX 470 Wp vs REC REC455AA Pure-RX
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06

Written summary

07

Questions about this pairing

Which panel is better: REC REC Alpha Pure-RX 470 Wp or REC REC620AA Pro MG?
According to our database: REC REC Alpha Pure-RX 470 Wp has higher module efficiency (22.60% vs 21.80%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of REC REC Alpha Pure-RX 470 Wp and REC REC620AA Pro MG?
REC REC Alpha Pure-RX 470 Wp has a module efficiency of 22.60%, while REC REC620AA Pro MG is 21.80%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does REC REC Alpha Pure-RX 470 Wp use vs REC REC620AA Pro MG?
REC REC Alpha Pure-RX 470 Wp uses HJT cells; REC REC620AA Pro MG uses HJT. 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 REC REC Alpha Pure-RX 470 Wp and REC REC620AA Pro MG?
REC REC Alpha Pure-RX 470 Wp has a 25 years power warranty; REC REC620AA Pro MG 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 REC REC Alpha Pure-RX 470 Wp and REC REC620AA Pro MG bifacial panels?
REC REC620AA Pro MG is bifacial (captures light from both faces); REC REC Alpha Pure-RX 470 Wp is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

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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.