SOWER, is an epoch-making solution that perform as a key to secure the use of solar energy on electric vehicles and achieve green sustainability in Greater Bay Area. The prototype is provided for further testing and help to deal with the battery barriers from customers. The High-Gain DC-DC Maximum Power Point Tracking technology is used to combine the low-voltage solar panel and high-voltage battery system. As a result, Mini Mobile Solar Mileages are formed in Hong Kong.