The Mission Solar MSX10 435 is the better rigid solar panel overall, rated 4.6 to 4.5. The Mission Solar MSX10 435 leads on value. The Mission Solar MSX10 435 costs $45.52 less ($200.47 vs $245.99).
A US-built all-black rooftop panel at an import-like price, for homeowners or installers who want domestic content without paying a premium.
A1 Solar Store $200.47 The Solar Store $219 US Solar Supplier $224.99A North American-made all-black rooftop panel for homeowners or installers who want domestic supply and a strong 30-year output warranty. Register it to get the full 25-year product warranty.
SolarTown $245.99 Solar Cellz USA $279.32Prices were last checked October 26, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Each factor is scored 0-100 against the same fixed reference points for every 150 W and up rigid solar panel; a clear win is highlighted. How we rank explains each one.
| Factor weight | Mission Solar MSX10 435 | Silfab Prime NTC 440 |
|---|---|---|
| Overall rating | 4.6/5 | 4.5/5 |
| Value 45% | 99 $0.46 per rated watt | 90 $0.56 per rated watt |
| Tested output 15% | 50 not yet independently tested (neutral score used) | 50 not yet independently tested (neutral score used) |
| Durability 25% | 100 IP68, 25-year warranty | 100 IP68, 12-year warranty |
| Efficiency 15% | 86 22.3% module efficiency | 92 22.6% module efficiency |
| Mission Solar MSX10 435 | Silfab Prime NTC 440 | |
|---|---|---|
| Output | ||
| Rated power | 435 W | 440 W |
| Module efficiency | 22.3% | 22.6% |
| Claimed efficiency | 23% ("up to 23% efficiency" for the series; the 435 W version's module efficiency is 22.3%) | 22.6% (module efficiency) |
| Cells | Monocrystalline (N-type TOPCon, 108 half cells) | Monocrystalline (N-type (NTC passivated rear), 108 half cells) |
| Bifacial | No | No |
| Electrical | ||
| Open-circuit voltage (Voc) | 39.6 V | 39 V |
| Voltage at max power (Vmp) | 33.3 V | 33.4 V |
| Short-circuit current (Isc) | 13.8 A | 14.2 A |
| Current at max power (Imp) | 13.1 A | 13.2 A |
| Voc temperature coefficient | -0.2%/°C | -0.2%/°C |
| Series / parallel | Yes | Yes |
| Connections | ||
| Output connector | Stäubli MC4 | Stäubli MC4 |
| Build | ||
| Weight | 47 lb (21.3 kg) | 46.3 lb (21 kg) |
| Dimensions | 1722 x 1134 x 35 mm | 67.8 x 44.6 x 1.37 in |
| Frame | 35 mm black anodized aluminum | black anodized aluminum |
| Glass | 3.2 mm AR-coated tempered | 3.2 mm high-transmittance tempered, anti-reflective coating |
| Junction box rating | IP68 | IP68 |
| Warranty | 25 years | 12 years |
| Output warranty | 30 years: at least 99% after year 1, 94.05% at 12 years, 88.2% at 25 years and 86% at 30 years | 30 years: at least 98% after year 1, 94.7% at 12 years, 90.8% at 25 years and 89.3% at 30 years |
| Released | - | 2023-09 |
