What factors impact solar panel efficiency ratings? They still cost a bit more than a standard efficiency panel, but if this trend continues, prices for high efficiency Chinese solar panels could get just as low as the price for standard panels. However, there are more and more solar panel manufacturers, specifically Chinese manufacturers, coming out with panels that have efficiencies above 20% at much more competitive prices.īrands like Trina Solar and LONGi now offer great-quality panels with efficiency ratings above 20%, but offer them at much lower prices than companies like Sunpower. There’s no denying it: high efficiency panels are going to cost you more money to install than standard efficiency panels. In comparison, the same sized solar energy system using standard efficiency panels would cost between $20,000 and $26,000, before incentives. You can expect to spend somewhere between $27,000 and $30,000 for an 8 kilowatt solar system that uses premium efficiency solar panels, before incentives. How much do high efficiency solar panels cost? **Other Sunpower A-series models, such as the 400 W, 410 W, and 415 W models, have higher efficiencies than other models listed, however, we wanted to show a wider variety of the premium efficiency panels on the market. *Some commercial solar panels have efficiency ratings higher than those listed this list is meant to represent high-efficiency residential solar panels.
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