Waaree Bi-66-585 vs Waaree Bi-66-595
VS
The verdict
595 leads on the differences that matter
The largest is module efficiency: 0.36 pp more efficient. 16 of 19 comparable parameters are identical.
See all 3 differencesHow alike are they
16
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
3 of 19 parameters
What actually differs
Parameter
585
595
Difference
Module efficiency
20.52 %
20.88 %
0.36 pp more efficient
Power density
205.2 Wp/m²
208.7 Wp/m²
3.5 Wp/m² higher
Rated power
585 Wp
595 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 (-0.340 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
585
18,959 kWh
595
19,283 kWh
Lifetime gap
324 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
585
595
Standard test conditions
25 °C
100.0% of rated power
585 W
595 W
Cool, bright day
40 °C
94.9% of rated power
555 W
565 W
Typical summer roof
55 °C
89.8% of rated power
525 W
534 W
Hot roof
70 °C
84.7% of rated power
495 W
504 W
03
Full specification
Parameter
585
595
Difference
Power and efficiency
Rated power
585 Wp
595 Wp
+10 W for 595
Module efficiency
20.52 %
20.88 %
+0.36 pp for 595
Power density
205.2 Wp/m²
208.7 Wp/m²
+3.5 Wp/m² for 595
Open-circuit voltage
41.76 V
42.05 V
Effectively the same
Voltage at max power
34.34 V
34.44 V
Effectively the same
Short-circuit current
17.78 A
17.90 A
Effectively the same
Current at max power
17.04 A
17.29 A
Effectively the same
Temperature
Temperature coefficient
-0.340 %/°C
-0.340 %/°C
Same
Mechanical
Dimensions
2190x1302x35 mm
2190x1302x35 mm
Same
Module area
2.851 m²
2.851 m²
Same
Weight
35.5 kg
35.5 kg
Same
Weight per kWp
60.7 kg/kWp
59.7 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.55 %/yr
0.55 %/yr
Same
Technology
Cell technology
PERC
PERC
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
120
120
Same
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#11,244
vs
#10,320
595 leads by 924 places
Power density
#11,293
vs
#10,302
595 leads by 991 places
Heat behaviour
#8,778
vs
#8,778
Tied - the same position in the database
Weight
#12,517
vs
#12,231
595 leads by 286 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#6,692
vs
#5,833
595 leads by 859 places
05
Open the full database
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06
Written summary
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07
Questions about this pairing
Which panel is better: Waaree Bi-66-585 or Waaree Bi-66-595?
According to our database: Waaree Bi-66-595 has higher module efficiency (20.88% vs 20.52%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Waaree Bi-66-585 and Waaree Bi-66-595?
Waaree Bi-66-585 has a module efficiency of 20.52%, while Waaree Bi-66-595 is 20.88%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Waaree Bi-66-585 use vs Waaree Bi-66-595?
Waaree Bi-66-585 uses PERC cells; Waaree Bi-66-595 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 Waaree Bi-66-585 and Waaree Bi-66-595?
Waaree Bi-66-585 has a 30 years power warranty; Waaree Bi-66-595 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 Waaree Bi-66-585 and Waaree Bi-66-595 bifacial panels?
Both Waaree Bi-66-585 and Waaree Bi-66-595 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 26 Waaree 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.