REC640AA Pro MG vs REC Alpha Pure-RX 470 Wp 5 of 18 identical Swap Change panels

REC REC640AA Pro MG vs REC REC Alpha Pure-RX 470 Wp

Q: Which panel is better: REC REC640AA Pro MG or REC REC Alpha Pure-RX 470 Wp?

According to our database: REC REC Alpha Pure-RX 470 Wp has higher module efficiency (22.60% vs 22.50%). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of REC REC640AA Pro MG and REC REC Alpha Pure-RX 470 Wp?

REC REC640AA Pro MG has a module efficiency of 22.50%, while REC REC Alpha Pure-RX 470 Wp is 22.60%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does REC REC640AA Pro MG use vs REC REC Alpha Pure-RX 470 Wp?

REC REC640AA Pro MG uses HJT cells; REC REC Alpha Pure-RX 470 Wp uses HJT. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.

Q: What is the warranty on REC REC640AA Pro MG and REC REC Alpha Pure-RX 470 Wp?

REC REC640AA Pro MG has a 30 years power warranty; REC REC Alpha Pure-RX 470 Wp 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.

Q: Are REC REC640AA Pro MG and REC REC Alpha Pure-RX 470 Wp bifacial panels?

REC REC640AA 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.

REC

REC640AA Pro MG

640 Wp 22.50 % HJT Bifacial

Open panel page Datasheet PDF

REC

REC Alpha Pure-RX 470 Wp

470 Wp 22.60 % HJT

Open panel page Datasheet PDF

The verdict

REC640AA Pro MG leads on the differences that matter

The largest is rated power: 170 W more power. 5 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 13 differences

How alike are they

5 of 18 comparable
parameters are identical

identical differs not published

What actually differs

13 of 18 parameters

Parameter REC640AA Pro MG REC Alpha Pure-RX 470 Wp Difference

Rated power 640 Wp 470 Wp 170 W more power

Performance warranty 30 yrs 25 yrs 5 yrs longer

Weight 36.8 kg 23.4 kg 13.4 kg lighter

Product warranty 30 yrs 25 yrs 5 yrs longer

Weight per kWp 57.5 kg/kWp 49.8 kg/kWp 7.7 kg/kWp lighter

Open-circuit voltage 44.90 V 65.70 V 20.80 V apart

Short-circuit current 17.89 A 8.95 A 8.94 A apart

Module area 2.838 m² 2.079 m² 0.759 m² apart

Annual degradation 0.25 %/yr 0.33 %/yr 0.08 %/yr slower

Voltage at max power 37.10 V 55.40 V 18.30 V apart

Current at max power 17.26 A 8.49 A 8.77 A apart

Bifacial Yes No Yes vs No

Dimensions 2175x1305x30 mm 1727x1204x31 mm 2175x1305x30 mm vs 1727x1204x31 mm

What it means on a roof

Thirty years of production

Each panel's own declared degradation curve, at 1,200 kWh/kWp a year

Cell temperature

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.

REC640AA Pro MG

21,744 kWh

REC Alpha Pure-RX 470 Wp

16,108 kWh

Lifetime gap

5,636 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario REC640AA Pro MG REC Alpha Pure-RX 470 Wp

Standard test conditions 25 °C 100.0% of rated power 640 W 470 W

Cool, bright day 40 °C 96.4% of rated power 617 W 453 W

Typical summer roof 55 °C 92.8% of rated power 594 W 436 W

Hot roof 70 °C 89.2% of rated power 571 W 419 W

Full specification

Parameter REC640AA Pro MG REC Alpha Pure-RX 470 Wp Difference

Power and efficiency

Rated power 640 Wp 470 Wp +170 W for REC640AA Pro MG

Module efficiency 22.50 % 22.60 % Effectively the same

Power density 225.5 Wp/m² 226.0 Wp/m² Effectively the same

Open-circuit voltage 44.90 V 65.70 V 20.80 V apart

Voltage at max power 37.10 V 55.40 V 18.30 V apart

Short-circuit current 17.89 A 8.95 A 8.94 A apart

Current at max power 17.26 A 8.49 A 8.77 A apart

Temperature

Temperature coefficient -0.240 %/°C -0.240 %/°C Same

Mechanical

Dimensions 2175x1305x30 mm 1727x1204x31 mm 2175x1305x30 mm vs 1727x1204x31 mm

Module area 2.838 m² 2.079 m² 0.759 m² apart

Weight 36.8 kg 23.4 kg -13.4 kg for REC Alpha Pure-RX 470 Wp

Weight per kWp 57.5 kg/kWp 49.8 kg/kWp -7.7 kg/kWp for REC Alpha Pure-RX 470 Wp

Warranty and degradation

Product warranty 30 yrs 25 yrs +5 yrs for REC640AA Pro MG

Performance warranty 30 yrs 25 yrs +5 yrs for REC640AA Pro MG

Annual degradation 0.25 %/yr 0.33 %/yr -0.08 %/yr for REC640AA Pro MG

Technology

Cell technology HJT HJT Same

Cell type Monocrystalline Monocrystalline Same

Cell count 120 - Not published by REC

Bifacial Yes No Yes vs No

Against the whole database

14,005 panels

Efficiency

#4,222 vs #3,658

REC Alpha Pure-RX 470 Wp leads by 564 places

Power density

#3,889 vs #3,709

REC Alpha Pure-RX 470 Wp leads by 180 places

Heat behaviour

#13 vs #13

Tied - the same position in the database

Weight

#11,246 vs #3,227

REC Alpha Pure-RX 470 Wp leads by 8,019 places

Warranty

#21 vs #9,798

REC640AA Pro MG leads by 9,777 places

Overall

#504 vs #6,413

REC640AA Pro MG leads by 5,909 places

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Written summary

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Questions about this pairing

Which panel is better: REC REC640AA Pro MG or REC REC Alpha Pure-RX 470 Wp?

According to our database: REC REC Alpha Pure-RX 470 Wp has higher module efficiency (22.60% vs 22.50%). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of REC REC640AA Pro MG and REC REC Alpha Pure-RX 470 Wp?

REC REC640AA Pro MG has a module efficiency of 22.50%, while REC REC Alpha Pure-RX 470 Wp is 22.60%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does REC REC640AA Pro MG use vs REC REC Alpha Pure-RX 470 Wp?

REC REC640AA Pro MG uses HJT cells; REC REC Alpha Pure-RX 470 Wp 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 REC640AA Pro MG and REC REC Alpha Pure-RX 470 Wp?

REC REC640AA Pro MG has a 30 years power warranty; REC REC Alpha Pure-RX 470 Wp 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 REC REC640AA Pro MG and REC REC Alpha Pure-RX 470 Wp bifacial panels?

REC REC640AA 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.