As of 2026, the average cost of residential solar panels in the U. This typically translates to about $2. 50 per watt of installed capacity (more on price per watt below).
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Rooftop solar installation typically costs about $23,100, with most projects ranging from $19,100 to $23,800 depending on system size and location. Under current federal law, the Residential Solar Tax Credit (ITC) ended for customer-owned systems on December 31, 2025.
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LONGi has two main series of solar panels: Hi-MO 4, and Hi-MO 5, which have a variety of different options to suit residential, commercial and utility-scale projects. LONGi offers half-cut and bifacial monocrystalline panels made with laser-grooved PERC cells.
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Featuring advanced n-type Bycium+ cell technology and multi-busbar half-cell construction, this 440W module delivers excellent output even in low-light conditions. With a maximum module efficiency of 22. 5% and bifacial gain potential, it supports better system yields in real-world.
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