SunPower Corporation's newest solar panel, the SPR-315, offers higher power output and conversion efficiency than its current products, by using the company's newly developed 22%-efficient Gen 2 solar cells. It carries a rated power output of 315 watts and is planned for commercial availability in the spring of 2007.

"A typical 4 kilowatt (AC rating) solar system requires 30 conventional 160 watt panels and covers 410 square feet of roof space. Our new SPR 315 panels produce an equivalent amount of power using only 15 solar panels on 265 square feet." -- Peter Aschenbrenner, SunPower, marketing and sales, VP