Each panel weighs approximately 40 pounds, and the standard rectangular panel measures 5 feet by 3 feet. For a 10-panel system, that's 400 lbs of weight and a surface area of 150 square feet.

Leapton says its new panels have a temperature coefficient of -0.30% per C and an efficiency of up to 23.14%. They come with a 30-year power output guarantee for 87.4% of the initial yield.

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The LED design allows the panels to be super-compact -- just 0.5 inch thick (1.3 cm) at their thinnest point -- so you can slip one or two in your camera bag.