A 390 watt solar panel is a photovoltaic module rated to produce 390 watts of DC power under Standard Test Conditions (STC). These panels sit in the mid-to-high efficiency range, offering more power per panel than traditional 300W modules while remaining more affordable than premium. The URE PEACH 390W solar panel delivers dependable, high-efficiency power with a sleek mono-crystalline half-cut cell design for improved performance and reduced energy loss. It's engineered to perform in low-light conditions and built to handle extreme weather, including heavy snow and strong. What is the difference between low price panels and top price panels? What are the dimensions of the panel? How long is the warranty on the panel? Which panels do you recommend for RV, marine? Can this panel be used with a 12v system? Can I pick up this panel from your fulfillment center to save on. Optimal Power-to-Cost Ratio: 390W panels occupy the sweet spot in 2025's solar market, delivering 21-22% efficiency at competitive prices while requiring fewer panels than lower-wattage alternatives, reducing overall installation costs by $800-1,200 for typical residential systems. It's high efficiency and certified reliability make it ideal for utility grid-tied installations including ground-mounted and commercial rooftop solar panel systems. Excellent Performance in Various Conditions: Low-temperature coefficient ensures good energy production even in warmer. Trina TSM-390-DE09C. 0kW) is available to buy in increments of 36 This item ships by truck freight only. If you have any questions or concerns about freight shipping, please email us or give us a call at (800) 383-0195.
