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MST12670HP3G vs MSI10-590HN4G 3 of 18 identical Swap Change panels

Mission Solar MST12670HP3G vs Mission Solar MSI10-590HN4G

Mission Solar
MST12670HP3G
670 Wp 21.60 % PERC Bifacial
Open panel page Datasheet PDF
VS
Mission Solar
MSI10-590HN4G
590 Wp 22.86 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

MSI10-590HN4G leads on the differences that matter

The largest is module efficiency: 1.26 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 MST12670HP3G MSI10-590HN4G Difference
Module efficiency 21.60 % 22.86 % 1.26 pp more efficient
Temperature coefficient -0.340 %/°C -0.298 %/°C 0.042 %/°C better in heat
Rated power 670 Wp 590 Wp 80 W more power
Power density 215.7 Wp/m² 228.4 Wp/m² 12.7 Wp/m² higher
Weight 38.7 kg 32.2 kg 6.5 kg lighter
Open-circuit voltage 46.30 V 52.90 V 6.60 V apart
Short-circuit current 18.55 A 14.11 A 4.44 A apart
Module area 3.106 m² 2.583 m² 0.523 m² apart
Cell technology PERC TOPCon PERC vs TOPCon
Weight per kWp 57.8 kg/kWp 54.6 kg/kWp 3.2 kg/kWp lighter
Voltage at max power 38.50 V 44.23 V 5.73 V apart
Current at max power 17.43 A 13.36 A 4.07 A apart
Cell count 132 144 12 cells apart
Annual degradation 0.45 %/yr 0.40 %/yr 0.05 %/yr slower
Dimensions 2384x1303x35 mm 2278x1134x30 mm 2384x1303x35 mm vs 2278x1134x30 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
MST12670HP3G
22,064 kWh
MSI10-590HN4G
19,796 kWh
Lifetime gap
2,268 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario MST12670HP3G MSI10-590HN4G
Standard test conditions 25 °C 100.0% of rated power 670 W 590 W
Cool, bright day 40 °C 94.9% of rated power 636 W 564 W
Typical summer roof 55 °C 89.8% of rated power 602 W 537 W
Hot roof 70 °C 84.7% of rated power 567 W 511 W
03

Full specification

Parameter MST12670HP3G MSI10-590HN4G Difference
Power and efficiency
Rated power 670 Wp 590 Wp +80 W for MST12670HP3G
Module efficiency 21.60 % 22.86 % +1.26 pp for MSI10-590HN4G
Power density 215.7 Wp/m² 228.4 Wp/m² +12.7 Wp/m² for MSI10-590HN4G
Open-circuit voltage 46.30 V 52.90 V 6.60 V apart
Voltage at max power 38.50 V 44.23 V 5.73 V apart
Short-circuit current 18.55 A 14.11 A 4.44 A apart
Current at max power 17.43 A 13.36 A 4.07 A apart
Temperature
Temperature coefficient -0.340 %/°C -0.298 %/°C +0.042 %/°C for MSI10-590HN4G
Mechanical
Dimensions 2384x1303x35 mm 2278x1134x30 mm 2384x1303x35 mm vs 2278x1134x30 mm
Module area 3.106 m² 2.583 m² 0.523 m² apart
Weight 38.7 kg 32.2 kg -6.5 kg for MSI10-590HN4G
Weight per kWp 57.8 kg/kWp 54.6 kg/kWp -3.2 kg/kWp for MSI10-590HN4G
Warranty and degradation
Product warranty - 12 yrs Not published by Mission Solar
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.45 %/yr 0.40 %/yr -0.05 %/yr for MSI10-590HN4G
Technology
Cell technology PERC TOPCon PERC vs TOPCon
Cell type Monocrystalline Monocrystalline Same
Cell count 132 144 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,129 panels
Efficiency
#7,716 vs #2,591
MSI10-590HN4G leads by 5,125 places
Power density
#7,708 vs #2,653
MSI10-590HN4G leads by 5,055 places
Heat behaviour
#8,846 vs #6,149
MSI10-590HN4G leads by 2,697 places
Weight
#11,486 vs #9,021
MSI10-590HN4G leads by 2,465 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#4,941 vs #3,768
MSI10-590HN4G leads by 1,173 places
05

More useful comparisons

Open the full database
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06

Written summary

07

Questions about this pairing

Which panel is better: Mission Solar MST12670HP3G or Mission Solar MSI10-590HN4G?
According to our database: Mission Solar MSI10-590HN4G has higher module efficiency (22.86% vs 21.60%); Mission Solar MSI10-590HN4G tolerates heat better (temp coeff -0.298%/°C vs -0.340%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Mission Solar MST12670HP3G and Mission Solar MSI10-590HN4G?
Mission Solar MST12670HP3G has a module efficiency of 21.60%, while Mission Solar MSI10-590HN4G is 22.86%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Mission Solar MST12670HP3G use vs Mission Solar MSI10-590HN4G?
Mission Solar MST12670HP3G uses PERC cells; Mission Solar MSI10-590HN4G 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 Mission Solar MST12670HP3G and Mission Solar MSI10-590HN4G?
Mission Solar MST12670HP3G has a 30 years power warranty; Mission Solar MSI10-590HN4G 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 Mission Solar MST12670HP3G and Mission Solar MSI10-590HN4G bifacial panels?
Both Mission Solar MST12670HP3G and Mission Solar MSI10-590HN4G 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 4 Mission Solar 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.