As a result, SunPower incurs interest expense that is substantially higher than interest payable on its 1.25% senior convertible debentures and 0.75% senior convertible debentures.In addition, SunPower separately accounted for the fair value liabilities of the embedded cash conversion option and the over-allotment option on its 4.5% senior cash convertible debentures issued in 2010 as an original