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MSE400HT0B vs MST12670HP3G 3 of 18 identical Swap Change panels

Mission Solar MSE400HT0B vs Mission Solar MST12670HP3G

Mission Solar MSE400HT0B
Mission Solar
MSE400HT0B
400 Wp 20.50 % PERC
Open panel page Datasheet PDF
VS
Mission Solar
MST12670HP3G
670 Wp 21.60 % PERC Bifacial
Open panel page Datasheet PDF
The verdict

MST12670HP3G leads on the differences that matter

The largest is module efficiency: 1.10 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 MSE400HT0B MST12670HP3G Difference
Module efficiency 20.50 % 21.60 % 1.10 pp more efficient
Rated power 400 Wp 670 Wp 270 W more power
Performance warranty 25 yrs 30 yrs 5 yrs longer
Power density 204.5 Wp/m² 215.7 Wp/m² 11.1 Wp/m² higher
Weight 19.0 kg 38.7 kg 19.7 kg lighter
Weight per kWp 47.5 kg/kWp 57.8 kg/kWp 10.3 kg/kWp lighter
Annual degradation 0.55 %/yr 0.45 %/yr 0.10 %/yr slower
Open-circuit voltage 37.09 V 46.30 V 9.21 V apart
Short-circuit current 13.75 A 18.55 A 4.80 A apart
Module area 1.956 m² 3.106 m² 1.151 m² apart
Voltage at max power 30.96 V 38.50 V 7.54 V apart
Current at max power 12.92 A 17.43 A 4.51 A apart
Cell count 108 132 24 cells apart
Bifacial No Yes No vs Yes
Dimensions 1723x1135x35 mm 2384x1303x35 mm 1723x1135x35 mm vs 2384x1303x35 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
MSE400HT0B
12,964 kWh
MST12670HP3G
22,064 kWh
Lifetime gap
9,100 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario MSE400HT0B MST12670HP3G
Standard test conditions 25 °C 100.0% of rated power 400 W 670 W
Cool, bright day 40 °C 94.9% of rated power 379 W 636 W
Typical summer roof 55 °C 89.7% of rated power 359 W 602 W
Hot roof 70 °C 84.6% of rated power 338 W 567 W
03

Full specification

Parameter MSE400HT0B MST12670HP3G Difference
Power and efficiency
Rated power 400 Wp 670 Wp +270 W for MST12670HP3G
Module efficiency 20.50 % 21.60 % +1.10 pp for MST12670HP3G
Power density 204.5 Wp/m² 215.7 Wp/m² +11.1 Wp/m² for MST12670HP3G
Open-circuit voltage 37.09 V 46.30 V 9.21 V apart
Voltage at max power 30.96 V 38.50 V 7.54 V apart
Short-circuit current 13.75 A 18.55 A 4.80 A apart
Current at max power 12.92 A 17.43 A 4.51 A apart
Temperature
Temperature coefficient -0.343 %/°C -0.340 %/°C Effectively the same
Mechanical
Dimensions 1723x1135x35 mm 2384x1303x35 mm 1723x1135x35 mm vs 2384x1303x35 mm
Module area 1.956 m² 3.106 m² 1.151 m² apart
Weight 19.0 kg 38.7 kg -19.7 kg for MSE400HT0B
Weight per kWp 47.5 kg/kWp 57.8 kg/kWp -10.3 kg/kWp for MSE400HT0B
Warranty and degradation
Product warranty 25 yrs - Not published by Mission Solar
Performance warranty 25 yrs 30 yrs +5 yrs for MST12670HP3G
Annual degradation 0.55 %/yr 0.45 %/yr -0.10 %/yr for MST12670HP3G
Technology
Cell technology PERC PERC Same
Cell type Monocrystalline Monocrystalline Same
Cell count 108 132 24 cells apart
Bifacial No Yes No vs Yes
04

Against the whole database

14,129 panels
Efficiency
#11,389 vs #7,716
MST12670HP3G leads by 3,673 places
Power density
#11,595 vs #7,708
MST12670HP3G leads by 3,887 places
Heat behaviour
#10,418 vs #8,846
MST12670HP3G leads by 1,572 places
Weight
#1,726 vs #11,486
MSE400HT0B leads by 9,760 places
Warranty
#9,912 vs #21
MST12670HP3G leads by 9,891 places
Overall
#10,705 vs #4,941
MST12670HP3G leads by 5,764 places
05

More useful comparisons

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06

Written summary

07

Questions about this pairing

Which panel is better: Mission Solar MSE400HT0B or Mission Solar MST12670HP3G?
According to our database: Mission Solar MST12670HP3G has higher module efficiency (21.60% vs 20.50%); Mission Solar MST12670HP3G tolerates heat better (temp coeff -0.340%/°C vs -0.343%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Mission Solar MSE400HT0B and Mission Solar MST12670HP3G?
Mission Solar MSE400HT0B has a module efficiency of 20.50%, while Mission Solar MST12670HP3G is 21.60%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Mission Solar MSE400HT0B use vs Mission Solar MST12670HP3G?
Mission Solar MSE400HT0B uses PERC cells; Mission Solar MST12670HP3G 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 Mission Solar MSE400HT0B and Mission Solar MST12670HP3G?
Mission Solar MSE400HT0B has a 25 years power warranty; Mission Solar MST12670HP3G 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 MSE400HT0B and Mission Solar MST12670HP3G bifacial panels?
Mission Solar MST12670HP3G is bifacial (captures light from both faces); Mission Solar MSE400HT0B 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.