Loading NuWatt Energy...
We use your location to provide localized solar offers and incentives.
We serve MA, NH, CT, RI, ME, VT, NJ, PA, and TX
Loading NuWatt Energy...
8 panels we install, test, and warranty — honest specs and real-world performance from our NABCEP-certified installation team. No sales fluff, just data from thousands of installations across New England.
NuWatt installs 8 solar panels from 5 manufacturers, ranging from 410W to 460W. Every panel is UL and IEC certified, and we select only panels with strong warranty backing from financially stable companies.
Our top recommendation for most homeowners is the QCells Q.PEAK DUO (410W) — it delivers the best value per watt and is manufactured in Georgia, USA. For maximum power per panel, the REC Alpha Pure-RX (460W) leads in wattage and efficiency. For the strongest warranty in our lineup, the Silfab SIL-440 offers 30-year product and performance coverage with HJT cell technology.
All specs below are from manufacturer data sheets verified by our NABCEP-certified engineering team. Pricing reflects NuWatt installed cost adders relative to our base panel.
Every panel we install, with verified specs from manufacturer data sheets. Click any card for detailed reviews, installation notes, and real-world performance data.
NuWatt RecommendedQCells
Best overall value — our most installed panel
NuWatt RecommendedQCells
Next-gen N-type TOPCon — more power from the same footprint
NuWatt RecommendedSilfab
Made in North America — HJT technology with a 30-year warranty
REC
Highest wattage, highest efficiency — the premium benchmark
CW Enerji
Budget high-wattage — maximum watts for minimum cost
Mission Solar
Made in Texas — American manufacturing with solid performance
Canadian Solar
Global #1 volume — N-type TOPCon from the world's largest manufacturer
SEG Solar
Korean quality cells, Texas assembly — bifacial for extra production
Different homeowners have different priorities. Here are our picks for the most common buying criteria, based on thousands of installations.
The most installed residential panel in the US. Best price-per-watt, Made in USA (Georgia), 25-year warranty. Our go-to recommendation for 90% of residential jobs.
460W and 22.5% efficiency — the most power per panel in our lineup. HJT cells with the best temperature coefficient (-0.24%/C). 92% output guaranteed at year 25.
30-year product and performance warranty — the longest in our lineup. Made in USA/Canada with HJT technology. 90.8% output guaranteed at year 25.
Three of our eight panels are manufactured in the United States: QCells (Georgia), Silfab (Washington), and Mission Solar (Texas). SEG Solar is also assembled in Houston, TX.
Not all solar cells are created equal. Understanding the four main technologies will help you make a smarter purchasing decision.
Proven and affordable
Mono PERC (Passivated Emitter Rear Cell) is the workhorse of the solar industry. It uses a single-crystal p-type silicon wafer with a reflective rear passivation layer to boost light capture. Mono PERC has been the dominant residential technology since 2018, with billions of panels installed worldwide. It offers the best balance of cost and performance for homeowners who have adequate roof space.
Next generation, lower degradation
N-type TOPCon (Tunnel Oxide Passivated Contact) uses an n-type silicon wafer that is inherently more resistant to degradation than p-type (Mono PERC). The tunnel oxide layer creates a passivated contact that reduces recombination losses, boosting efficiency. TOPCon panels degrade about 0.1% less per year than PERC, meaning more cumulative energy production over 25 years. They also perform better in high temperatures.
Premium, best temperature performance
HJT (Heterojunction Technology) sandwiches a crystalline silicon wafer between thin layers of amorphous silicon. This creates the lowest temperature coefficient of any mainstream cell type, meaning HJT panels lose less power on hot summer days. They also have the lowest degradation rate — the REC Alpha guarantees 92% output at year 25. HJT is the premium choice for homeowners who want maximum long-term energy production.
Bonus production from the rear side
Bifacial panels have a transparent or semi-transparent rear side that captures reflected light (albedo) from the ground or surface below. On ground-mount systems over light-colored surfaces, bifacial panels can produce 10-15% more energy than standard single-sided panels. On flush rooftop mounts, the gain is smaller (2-5%). Bifacial panels use glass-glass construction, making them more durable but slightly heavier.
We do not install every panel on the market. Our NABCEP-certified engineering team evaluates panels on five criteria before adding them to our lineup.
A 25-year warranty is only as good as the company behind it. We evaluate manufacturer financial statements, parent company stability, and North American service infrastructure. Every panel in our lineup is backed by a manufacturer with the financial strength to honor claims for decades. We have seen smaller brands exit the market and leave homeowners with worthless warranties — we will not sell a panel from a company we do not trust to be around in 2050.
We have installed thousands of systems across New England since 2008. Our panel selection is informed by real data — not just lab specs. We track warranty claim rates, field degradation, and installation ease for every panel we offer. If a panel looks great on paper but causes problems on the roof, it does not stay in our lineup. The QCells Q.PEAK DUO has been our most reliable panel across thousands of installations.
When we sell a system, we commit to an installation date. That means we need panels that ship consistently, with predictable lead times and no sudden discontinuations. We work with manufacturers who maintain US warehouse inventory and have diversified production facilities. Supply chain disruptions delay projects and frustrate homeowners — we prioritize manufacturers who deliver on time.
New England gets snow, ice, salt air (coast), high humidity, and temperature swings from -10F to 100F. We test panels for real-world durability in these conditions. Temperature coefficient matters less in our cold winters (an advantage for PERC panels), but snow shedding, frame strength, and junction box sealing matter more than in sunbelt states. Our panels are rated for the loads and conditions we encounter.
We offer panels across a range of budgets because every homeowner has different priorities. The QCells Q.PEAK DUO delivers the best value per watt — period. But for homeowners with limited roof space, tight aesthetic requirements, or a preference for cutting-edge technology, premium panels like the REC Alpha or Silfab SIL-440 deliver measurably more energy per square foot. We help each customer find the right balance for their situation.
All eight panels at a glance. Sort by any column to find the right panel for your priorities.
| Panel | Watts | Efficiency | Cell Type | Temp Coeff | Warranty | Yr 25 | Weight | Made In | Price |
|---|---|---|---|---|---|---|---|---|---|
| QCells Q.PEAK | 410W | 21.1% | Mono PERC | -0.34%/°C | 25/25yr | 86% | 20.8kg | Georgia | Base |
| QCells Q.TRON | 435W | 22% | N-type TOPCon | -0.3%/°C | 25/25yr | 88% | 21kg | Georgia | Moderate |
| Silfab SIL-440-BG | 440W | 22.2% | HJT | -0.26%/°C | 30/30yr | 90.8% | 20.5kg | Washington | Premium |
| REC Alpha | 460W | 22.5% | HJT | -0.24%/°C | 25/25yr | 92% | 21.5kg | Singapore | Premium |
| CW Enerji CWT450-108PMH | 450W | 20.8% | Mono PERC | -0.35%/°C | 15/25yr | 84.8% | 23.5kg | Turkey | Budget |
| Mission Solar MSE410SX6T | 410W | 21% | Mono PERC | -0.35%/°C | 25/25yr | 85% | 21.8kg | San Antonio | Moderate |
| Canadian Solar CS7N-445MS | 445W | 22.3% | N-type TOPCon | -0.29%/°C | 25/25yr | 89.4% | 21.8kg | Southeast Asia | Moderate |
| SEG Solar SEG-440-BM-HV | 440W | 22.1% | Mono PERC Bifacial | -0.3%/°C | 25/30yr | 88.9% | 21.2kg | Houston | Moderate |
All specs from manufacturer data sheets, verified by NuWatt engineering. Warranty = product/performance years. Yr 25 = minimum guaranteed output at year 25. Price tiers are relative to our base panel (QCells Q.PEAK DUO).
Answer a few questions about your home and energy usage, and our team will design a custom solar system with the right panel for your roof, budget, and goals. Free quotes, no pressure.
Honest answers from our installation team — no sales pitch.
For most homeowners, we recommend the QCells Q.PEAK DUO BLK ML-G10+ (410W). It offers the best price-per-watt in our lineup, is manufactured in Georgia, USA, and carries a 25-year product and performance warranty. For homeowners with limited roof space or higher budgets, the QCells Q.TRON (435W, N-type TOPCon) or Canadian Solar HiKu7 (445W) deliver more watts per panel. For premium buyers who want the absolute best technology, the REC Alpha Pure-RX (460W, HJT) or Silfab SIL-440 (30-year warranty) are excellent choices.
It depends on your roof space and priorities. Premium panels like the REC Alpha Pure-RX (460W, $0.18/W premium) produce more watts per panel, meaning you need fewer panels for the same system size. If you have ample roof space, the QCells Q.PEAK DUO at the base price delivers excellent performance for less money. Premium panels also tend to degrade more slowly (92% at year 25 for REC vs 86% for QCells Q.PEAK), so they produce slightly more energy over 25-30 years. For most homeowners with adequate roof space, the value tier offers the best return on investment.
Mono PERC (Passivated Emitter Rear Cell) is the most proven and affordable technology, used in about 70% of residential panels. N-type TOPCon (Tunnel Oxide Passivated Contact) is the next generation — it degrades more slowly, performs better in heat, and delivers higher efficiency. HJT (Heterojunction Technology) combines crystalline and amorphous silicon for the best temperature coefficient and lowest degradation, but costs more. In our lineup, QCells Q.PEAK DUO uses PERC, QCells Q.TRON and Canadian Solar use TOPCon, and Silfab and REC use HJT.
No. The federal residential solar tax credit (Section 25D) expired on December 31, 2025. Homeowners who purchase solar panels in 2026 will not receive a federal tax credit. However, many state-level incentives remain available, including net metering credits, state rebates (like Rhode Island REF or New Jersey ADI), and property tax exemptions. NuWatt helps customers maximize all available state and local incentives for their specific location.
Solar panels in our lineup carry 25 to 30 year product warranties, but their actual lifespan typically extends to 30-40 years. At the end of the warranty period, panels are guaranteed to produce 84-92% of their original rated output (depending on the panel). After the warranty expires, panels continue to produce electricity — just at a slowly declining rate. The degradation rate for modern panels is approximately 0.3-0.5% per year. Panels installed in the 1990s are still producing power today.
New England has cold winters and shorter winter days. Cold temperatures actually help solar panel efficiency (panels perform better in cold weather), so the temperature coefficient advantage of premium HJT panels matters less here than in Arizona or Texas. However, shorter winter days mean efficiency matters more — higher efficiency panels produce more power from limited winter sunlight. For most New England homes, the QCells Q.PEAK DUO (21.1% efficiency) is an excellent choice. For space-constrained roofs, the REC Alpha Pure-RX (22.5% efficiency) maximizes winter production per panel.
Panel quality depends on the manufacturer, not the country of origin. We install panels from the USA (QCells in Georgia, Mission Solar in Texas, SEG Solar in Texas), Canada (Silfab), Singapore (REC), Turkey (CW Enerji), and Southeast Asia (Canadian Solar). All panels in our lineup are UL and IEC certified, regardless of where they are made. What matters most is the manufacturer financial stability (can they honor a 25-year warranty?), certification compliance, real-world installation track record, and supply chain consistency. Canadian Solar, manufactured in Thailand and Vietnam, is the world largest panel manufacturer and publicly traded — their warranty backing is among the strongest in the industry.
The number of panels depends on your annual electricity usage and the wattage of the panel you choose. The average New England home uses 8,000-10,000 kWh per year and needs a 7-10 kW system. With QCells Q.PEAK DUO (410W) panels, that means 18-25 panels. With higher wattage panels like the REC Alpha Pure-RX (460W), you need 16-22 panels for the same system. NuWatt designs custom systems based on your actual electricity bills, roof orientation, shading, and energy goals.
Look for two separate warranties: a product warranty (covering manufacturing defects, typically 25 years) and a performance warranty (guaranteeing minimum output at year 25, typically 84-92%). The best indicator of warranty reliability is the manufacturer financial health — a 30-year warranty means nothing if the company goes bankrupt in 10 years. In our lineup, Silfab offers the longest warranty (30 years), REC offers the strongest performance guarantee (92% at year 25), and QCells and Canadian Solar are backed by large, publicly traded parent companies.
Technically yes, but we do not recommend it. Mixing panel brands or wattages on the same inverter string creates mismatch losses — the string performs at the level of the weakest panel. If you have different roof orientations or shading conditions, we use microinverters or power optimizers that allow each panel to operate independently. In that case, mixing is possible but still adds complexity to future maintenance and warranty claims. NuWatt designs systems with a single panel model whenever possible.