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SpecialtySEG Solar
Korean quality cells, Texas assembly — bifacial for extra production
SEG Solar assembles panels in Houston, Texas using premium cells from South Korean manufacturers. The SEG-440-BM-HV is a bifacial glass-glass module that can capture light from both sides — generating up to 10–15% additional energy in ground-mount or elevated installations where light reflects off the surface below. Even on standard rooftop mounts where the bifacial advantage is minimal, the Korean cell quality and 30-year performance warranty make it a compelling specialty option.
Wattage
440W
Efficiency
22.1%
Temp Coeff
-0.3%
Warranty
25 yr
Price Tier
$$
The SEG Solar SEG-440-BM-HV 440W delivers 22.1% efficiency with Mono PERC Bifacial cell technology, backed by a 25-year product warranty and 88.9% guaranteed output at year 25. As a specialty panel, it serves a specific use case where its unique characteristics — Mono PERC Bifacial technology manufactured in Houston, Texas, USA (assembled from Korean cells) — provide clear advantages over standard options. NuWatt installs this panel for homeowners whose projects specifically benefit from its strengths.
Complete electrical, mechanical, warranty, and certification data for the SEG Solar SEG-440-BM-HV 440W. All specifications are sourced from the manufacturer's official datasheet.
Source: SEG Solar official datasheet
The SEG Solar SEG-440-BM-HV 440W carries a temperature coefficient of -0.3%/°C. In practical terms, this means that for every degree Celsius above 25°C (77°F) — the standard test condition temperature — the panel loses 0.3% of its rated output. On a 95°F summer day in Massachusetts, with roof surface temperatures reaching 60°C, a panel's output drops by approximately 10.5%. A lower (less negative) temperature coefficient is better. At -0.3%/°C, the SEG Solar SEG-440-BM-HV performs well in heat, better than standard Mono PERC panels that typically range from -0.34 to -0.36%/°C.
The SEG Solar SEG-440-BM-HV 440W uses 108 half-cut cells, which improves shade tolerance compared to traditional full-cell designs. When a shadow falls across part of the panel, half-cut cell architecture limits the impact to only the affected string of cells, allowing the unshaded portions to continue producing near full power. This matters for rooftops with intermittent shading from trees, chimneys, vents, or neighboring structures.
A 20-panel system (8.8 kW) using SEG Solar SEG-440-BM-HV 440W panels in Massachusetts produces approximately 11,000 kWh/year. That is roughly 917 kWh per month — enough to offset the electricity usage of many New England homes. Actual production varies based on roof orientation, tilt angle, shading, and local weather patterns.
Over the 30-year performance warranty period, the SEG Solar SEG-440-BM-HV 440W guarantees at least 98% output in year one, degrading linearly to 88.9% by year 25. The annual degradation rate works out to approximately 0.38% per year — a figure that directly affects your lifetime energy production and savings. This is a strong degradation guarantee, better than the industry average.
Comparing the SEG Solar SEG-440-BM-HV degradation curve against similar panels in our lineup.
Guaranteed minimum output over 25 years
The SEG Solar SEG-440-BM-HV 440W includes a 25-year product warranty covering manufacturing defects, material failures, and workmanship issues, plus a 30-year performance warranty guaranteeing minimum output levels over time. The product warranty protects you if the panel physically fails; the performance warranty ensures it keeps producing electricity at guaranteed levels.
The degradation curve above shows the guaranteed minimum output over 25 years. Starting at 98% in year one and declining to 88.9% by year 25, the SEG Solar SEG-440-BM-HV outperforms the comparison panels shown. In real-world conditions, panels often exceed their warranty guarantees — the numbers shown represent the manufacturer's guaranteed minimum, not expected average performance.
When evaluating warranty strength, consider the manufacturer's financial stability. A 25 or 30-year warranty is only as good as the company backing it. SEG Solar maintains manufacturing operations with a track record in the solar industry, though buyers should consider company size relative to larger manufacturers.
Estimate your system cost and production based on the SEG Solar SEG-440-BM-HV 440W.
System Size
8.8 kW
Annual Production
11,000 kWh
Est. System Cost
$27,992
Price/Watt
$3.18
Estimates based on 4.2 peak sun hours/day in Massachusetts, 20 × 440W SEG Solar SEG-440-BM-HV 440W panels. System cost is an estimate before any state rebates. The federal residential solar tax credit (25D) expired Dec 31, 2025. Actual production depends on roof orientation, shading, and system design.Get a precise quote →
The SEG Solar SEG-440-BM-HV 440W has a price adder of +$0.10/W compared to our base panel option. For a standard 20-panel system, this translates to approximately $880 more than the base panel option.
System pricing varies by state due to permitting costs, labor markets, and local regulations. Use the calculator above to estimate costs for your specific location. All prices shown are pre-rebate — state incentives and utility programs may further reduce your out-of-pocket cost. Note that the federal residential solar tax credit (Section 25D) expired on December 31, 2025, and is no longer available to homeowners purchasing solar systems.
The SEG Solar SEG-440-BM-HV occupies a specialty niche where its unique characteristics provide advantages that standard panels cannot match. The cost premium is justified when the project specifically benefits from what this panel offers — whether that is domestic manufacturing compliance, bifacial energy gain, or a specific form factor.
“SEG Solar panels use the same standard frame dimensions as our QCells panels, so racking compatibility is never an issue. The glass-glass bifacial construction is slightly heavier than glass-backsheet modules but more durable long-term. We particularly recommend these for ground-mount and carport installations where the bifacial gain is meaningful. On standard rooftop flush mounts, the bifacial advantage is small (2–5%), so the QCells Q.TRON may be a better value for roof installs.”
— NuWatt Energy Install Team
NABCEP-certified installers, 2,500+ residential installations
Side-by-side specifications against similar panels in our lineup. Green values indicate an advantage; muted values show where other panels lead.
| Specification | SEG Solar SEG-440-BM-HV | Mission Solar MSE410SX6T | QCells Q.PEAK DUO BLK ML-G10+ |
|---|---|---|---|
| Wattage | 440W | 410W | 410W |
| Efficiency | 22.1% | 21% | 21.1% |
| Cell Type | Mono PERC Bifacial | Mono PERC | Mono PERC |
| Temp Coefficient | -0.3%/°C | -0.35%/°C | -0.34%/°C |
| Product Warranty | 25 yr | 25 yr | 25 yr |
| Performance Warranty | 30 yr | 25 yr | 25 yr |
| Year 25 Output | 88.9% | 85% | 86% |
| Weight | 21.2 kg | 21.8 kg | 20.8 kg |
| Dimensions | 1722×1134mm | 1755×1038mm | 1722×1134mm |
| Made In | Houston, Texas, USA (assembled from Korean cells) | San Antonio, Texas, USA | Georgia, USA |
| Price Tier | Moderate | Moderate | Base / Budget |
The SEG Solar SEG-440-BM-HV 440W is specifically suited for these scenarios:
Not sure which panel fits your roof and budget? Get a free custom design from NuWatt and we will recommend the right panel for your specific situation.
Common questions about the SEG Solar SEG-440-BM-HV 440W, answered by NuWatt's NABCEP-certified team.
A bifacial solar panel can generate electricity from both its front and rear sides. The front side captures direct sunlight, while the rear side captures light reflected off the ground or surface below (called albedo). On ground-mount systems over light-colored surfaces, bifacial panels can produce 10–15% more energy than standard single-sided panels. On standard flush rooftop mounts, the gain is smaller (2–5%).
SEG Solar assembles panels at their facility in Houston, Texas using premium solar cells from South Korean manufacturers. This gives them the combination of Korean cell quality with US-based module assembly and quality control.
Yes, SEG Solar panels work well on rooftops. However, the bifacial advantage is minimal on flush rooftop mounts (only 2–5% gain) because there's little reflected light reaching the back of the panel. If you're doing a standard rooftop install, you may get better value from a non-bifacial panel like the QCells Q.TRON (435W). The bifacial advantage shines on ground-mounts, pergolas, and carports.
Both are assembled in North America. Silfab (440W, HJT) has a slightly better temperature coefficient (-0.26% vs -0.30%), a 30-year product warranty (vs 25 for SEG), and uses HJT cell technology. SEG Solar (440W, Bifacial PERC) offers bifacial energy gain on ground-mounts. Choose Silfab for rooftop installations, SEG for ground-mount or elevated mounting where bifacial gains matter.
SEG Solar provides a 25-year product warranty and a 30-year performance warranty guaranteeing at least 88.9% output at year 25. The 30-year performance warranty is the joint-longest in our lineup (tied with Silfab), giving long-term production confidence.
Every project is different. Explore these alternatives to find the best fit for your roof, budget, and goals.
SpecialtyMission Solar
Made in Texas — American manufacturing with solid performance
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Value TierRecommendedQCells
Best overall value — our most installed panel
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Premium TierRecommendedQCells
Next-gen N-type TOPCon — more power from the same footprint
View DetailsNuWatt installs SEG Solar SEG-440-BM-HV 440W panels across New England and beyond. Get a free, no-obligation solar quote with accurate pricing, production estimates, and financing options for your specific roof.