Solar panels installed by HD Hyundai Energy Solutions are seen on the rooftop of CJ CheilJedang's factory in Jincheon, North Chungcheong Province, in this undated file photo. HD Hyundai Energy Solutions said Monday that it recently installed solar panels on the rooftops of CJ CheilJedang's Jincheon and Incheon factories, as well as on a parking lot roof at HD Hyundai Infracore's Incheon plant. The energy firm plans to turn more unused spaces into solar farms to reduce carbon emissions. Courtesy of HD Hyundai