NuWatt's Solar Panel Lineup

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.