Shares of SunPower (SPWR) - Get SunPower Corporation Report are down 70% over the past 12 months and on Wednesday reported a deeper than expected loss of $0.64 a share, while analysts had expected $0.46. But analysts say the company can move onto the right track if it focuses on residential solar power. The company's fourth quarter residential deployments of 94 megawatts rose 13% year over year. Credit Suisse analysts are calling for 366 megawatts of residential deployments for 2017. Still, there are uncertainties surrounding the renewal of the U.S. solar investment tax credit.