XOOM Energy Japan, GK is the first foreign energy retail company to register with METI. XOOM Energy Japan, GK has been supply ... ing electricity services in the liberalized Japanese electricity market since 2016. We offer residential and small business services throughout Japan, excluding the Okinawa area. We are aiming to improve customer satisfaction by providing excellent customer service and providing strong customer support so customers can have peace of mind. One of our goals of customer support is to provide not only Japanese language communication, but also English language communication in order to support our diverse customer base. From online enrollment to customer support, billing statements and all customer communications, customers can choose their preferred language. We are providing high quality customer support to meet customer needs. read more