Every year, the Silicon Valley Toxics Coalition (SVTC) sends out a survey to PV solar manufacturers. Though companies do not have to respond, this does not stop the SVTC from evaluating them. It simply means there is less information and, consequently, they receive lower marks. The “Industry Leaders” on SVTC’s 5th annual 2014 scorecard are: Trina Solar (92), SunPower (88), Yingli Green Energy (81), SolarWorld (73) and REC (71).