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CHSM66RN(DG)/F-BQ-660 vs CHSM66RN(DG)/F-BQ 16 of 19 identical Swap Change panels

Astronergy CHSM66RN(DG)/F-BQ-660 vs Astronergy CHSM66RN(DG)/F-BQ

Astronergy CHSM66RN(DG)/F-BQ-660
CHSM66RN(DG)/F-BQ-660
660 Wp 24.40 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Astronergy CHSM66RN(DG)/F-BQ
CHSM66RN(DG)/F-BQ
670 Wp 24.80 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

CHSM66RN(DG)/F-BQ leads on the differences that matter

The largest is module efficiency: 0.40 pp more efficient. 16 of 19 comparable parameters are identical.

See all 3 differences
How alike are they
16 of 19 comparable
parameters are identical
identical differs
01

What actually differs

3 of 19 parameters
Parameter CHSM66RN(DG)/F-BQ-660 CHSM66RN(DG)/F-BQ Difference
Module efficiency 24.40 % 24.80 % 0.40 pp more efficient
Power density 244.3 Wp/m² 248.0 Wp/m² 3.7 Wp/m² higher
Rated power 660 Wp 670 Wp 10 W more power
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 (-0.260 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
CHSM66RN(DG)/F-BQ-660
22,317 kWh
CHSM66RN(DG)/F-BQ
22,655 kWh
Lifetime gap
338 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario CHSM66RN(DG)/F-BQ-660 CHSM66RN(DG)/F-BQ
Standard test conditions 25 °C 100.0% of rated power 660 W 670 W
Cool, bright day 40 °C 96.1% of rated power 634 W 644 W
Typical summer roof 55 °C 92.2% of rated power 609 W 618 W
Hot roof 70 °C 88.3% of rated power 583 W 592 W
03

Full specification

Parameter CHSM66RN(DG)/F-BQ-660 CHSM66RN(DG)/F-BQ Difference
Power and efficiency
Rated power 660 Wp 670 Wp +10 W for CHSM66RN(DG)/F-BQ
Module efficiency 24.40 % 24.80 % +0.40 pp for CHSM66RN(DG)/F-BQ
Power density 244.3 Wp/m² 248.0 Wp/m² +3.7 Wp/m² for CHSM66RN(DG)/F-BQ
Open-circuit voltage 49.28 V 49.58 V Effectively the same
Voltage at max power 41.40 V 41.65 V Effectively the same
Short-circuit current 16.72 A 16.87 A Effectively the same
Current at max power 15.94 A 16.09 A Effectively the same
Temperature
Temperature coefficient -0.260 %/°C -0.260 %/°C Same
Mechanical
Dimensions 2382x1134x30 mm 2382x1134x30 mm Same
Module area 2.701 m² 2.701 m² Same
Weight 32.0 kg 32.0 kg Same
Weight per kWp 48.5 kg/kWp 47.8 kg/kWp Effectively the same
Warranty and degradation
Product warranty 15 yrs 15 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.35 %/yr 0.35 %/yr Same
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 264 264 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#99 vs #12
CHSM66RN(DG)/F-BQ leads by 87 places
Power density
#88 vs #14
CHSM66RN(DG)/F-BQ leads by 74 places
Heat behaviour
#511 vs #511
Tied - the same position in the database
Weight
#2,313 vs #1,884
CHSM66RN(DG)/F-BQ leads by 429 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#562 vs #295
CHSM66RN(DG)/F-BQ leads by 267 places
05

More useful comparisons

Open the full database
Same series, other bin
Astronergy CHSM66RN(DG)/F-BQ-660 vs Astronergy CHSM66RN(DG)/F-BQ-670
3 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM66RN(DG)/F-BQ-660 vs Astronergy CHSM66RN(DG)/F-BQ-665
One difference: module efficiency
Same series, other bin
Astronergy CHSM66RN(DG)/F-BQ-660 vs Astronergy CHSM66RN(DG)/F-BQ-655
One difference: module efficiency
Same series, other bin
Astronergy CHSM66RN(DG)/F-BQ-660 vs Astronergy CHSM66RN(DG)/F-BQ-650
3 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM66RN(DG)/F-BQ-660 vs Astronergy CHSM66RN(DG)/F-BQ-645
3 differences, the largest is module efficiency
Same manufacturer
Astronergy CHSM66RN(DG)/F-BQ-660 vs Astronergy CHSM66N(DG)/F-BH-735
12 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Astronergy CHSM66RN(DG)/F-BQ-660 or Astronergy CHSM66RN(DG)/F-BQ?
According to our database: Astronergy CHSM66RN(DG)/F-BQ has higher module efficiency (24.80% vs 24.40%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Astronergy CHSM66RN(DG)/F-BQ-660 and Astronergy CHSM66RN(DG)/F-BQ?
Astronergy CHSM66RN(DG)/F-BQ-660 has a module efficiency of 24.40%, while Astronergy CHSM66RN(DG)/F-BQ is 24.80%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Astronergy CHSM66RN(DG)/F-BQ-660 use vs Astronergy CHSM66RN(DG)/F-BQ?
Astronergy CHSM66RN(DG)/F-BQ-660 uses TOPCon cells; Astronergy CHSM66RN(DG)/F-BQ 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 Astronergy CHSM66RN(DG)/F-BQ-660 and Astronergy CHSM66RN(DG)/F-BQ?
Astronergy CHSM66RN(DG)/F-BQ-660 has a 30 years power warranty; Astronergy CHSM66RN(DG)/F-BQ 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 Astronergy CHSM66RN(DG)/F-BQ-660 and Astronergy CHSM66RN(DG)/F-BQ bifacial panels?
Both Astronergy CHSM66RN(DG)/F-BQ-660 and Astronergy CHSM66RN(DG)/F-BQ 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.

Shop prices: See 41 Astronergy 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.