Mission Solar — US
MSE 420W A Ultra
The Mission Solar MSE 420W A Ultra is a 420W PERC solar panel with 20.5% efficiency. Made in US. Backed by a 25-year warranty.
Standard Tier🇺🇸 Domestic Content Bonus Eligible
420W
Wattage
20.5%
Efficiency
PERC
Cell Type
25 years
Warranty
Full Specifications
- Brand
- Mission Solar
- Model
- MSE 420W A Ultra
- Series
- MSE
- Wattage
- 420W
- Module Efficiency
- 20.5%
- Cell Type
- PERC
- Dimensions
- 66-80" x 39-41"
- Weight
- 48 lbs
- Warranty
- 25 years
- Est. Price Per Watt
- $2.80
- Est. 7kW System Cost
- $19,600
- Est. 10kW System Cost
- $28,000
- Temperature Coefficient
- -0.35%/°C
- Bifacial
- No
- Origin
- US
- FEOC Status
- pass
Other Mission Solar Panels
| Model | Wattage | Efficiency | Cell | $/W |
|---|---|---|---|---|
| MSE 440W D | 440W | 21.1% | PERC | $3.00 |
| MSE 435W C All-Black | 435W | 20.9% | N-Type TOPCon | $2.93 |
| MSE 430W B BF | 430W | 20.8% | PERC | $2.90 |
| MSE 430W E Pro | 430W | 20.8% | N-Type TOPCon | $2.90 |
| MSE 425W D Plus | 425W | 20.6% | PERC | $2.83 |
Similar Wattage Panels (Competitors)
| Panel | Wattage | Efficiency | $/W |
|---|---|---|---|
| Maxeon 3 450W D Plus | 450W | 23.3% | $4.61 |
| SunPower Maxeon 445W D Plus | 445W | 23.1% | $4.58 |
| Maxeon 3 445W A Ultra | 445W | 23.1% | $4.51 |
| SunPower Maxeon 440W C | 440W | 22.9% | $4.50 |
Frequently Asked Questions
How much does a 420W Mission Solar MSE 420W A Ultra cost?
The Mission Solar MSE 420W A Ultra costs approximately $1176 per panel ($$2.80/W). A typical 7kW system using this panel would cost around $19,600 before incentives.
⚠ The 30% federal solar tax credit has ended — Section 25D expired December 31, 2025, and the Section 48E construction-start deadline passed July 4, 2026.
Selecting 30% ITC assumes you began construction before this deadline. Most new purchases no longer qualify.Learn about your options after the deadline →
Is the Mission Solar MSE 420W A Ultra a good solar panel?
The Mission Solar MSE 420W A Ultra has 20.5% efficiency and a 25 years warranty, placing it in the standard tier. This is a solid mid-range panel suitable for most residential installations. It also qualifies for the domestic content bonus under the Inflation Reduction Act.
How many Mission Solar MSE 420W A Ultra panels do I need?
For a typical 7kW residential system, you'd need approximately 17 panels. For a 10kW system, plan for about 24 panels. The exact number depends on your roof space, energy usage, and local sun hours.