Reuters: SunPower Corp on Thursday said quarterly net income nearly tripled on strong sales of components for solar power systems, sending its shares up 10 percent. The U.S. solar company also raised its full-year profit forecast slightly. Shares of SunPower, which makes the highest-efficiency silicon solar cells and modules, have been pummeled in recent weeks on fears that the global financial crisis will temper demand in the high-flying renewable energy sector. On Thursday, …