October 02, 2015

SolarCity Unveils World’s Most Efficient Rooftop Solar Panel with 22% efficiency and lower manufacturing cost

SolarCity has built the world’s most efficient rooftop solar panel, with a module efficiency exceeding 22 percent. The new SolarCity panel generates more power per square foot and harvests more energy over a year than any other rooftop panel in production, and will be the highest volume solar panel manufactured in the Western Hemisphere.

SolarCity will begin producing the first modules in small quantities this month at its 100 MW pilot facility, but the majority of the new solar panels will ultimately be produced at SolarCity’s 1 GW facility in Buffalo, New York. SolarCity expects to be producing between 9,000 - 10,000 solar panels each day with similar efficiency when the Buffalo facility reaches full capacity.

SolarCity’s panel was measured with 22.04 percent module-level efficiency by Renewable Energy Test Center, a third-party certification testing provider for photovoltaic and renewable energy products. SolarCity’s new panel—created via a proprietary process that significantly reduces the manufacturing cost relative to other high-efficiency technologies—is the same size as standard efficiency solar panels, but produces 30-40 percent more power. SolarCity’s panel also performs better than other modules in high temperatures, which allows it to produce even more energy on an annual basis than other solar panels of comparable size.



SunPower’s X-Series panels have 21.5 percent module-level efficiency.

SolarCity created its new panel via a proprietary process that it claims not only ups the performance, but also significantly reduces the manufacturing cost relative to other high-efficiency technologies at the same size as other solar panels, adding an additional 30 to 40 percent more power per panel.

The percentages of overall energy production and module-level can be confusing but don’t get lost in them. The gist is these panels promise to have a higher output at a lower production cost – and SolarCity says it is the most efficient solar panel at the moment, reducing waste – cuttings costs for both consumer and company and adding an attractive amount of power performance.



Solar Action Alliance, is a group of environmentalists who want to spread the word about the most clean, reliable, and abundant source of renewable energy: the sun.

Their website, solaractionalliance.org, exists to educat visitors and provide them with opportunities to get involved with solar.

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