台灣電力公司
In 1946, he was sent to Taiwan (which had just been handed over to the Nationalist Government from Japan following the Allied victory in World War II) to work at the Taiwan Power Company, a public utility. Managing a staff of several hundred, Sun was able to get 80% of the power network in Taiwan (destroyed during the war) restored in five months. At Taiwan Power Company, he was Head Engineer of the Electrical and Mechanical Department from 1946 to 1950, Chief Engineer from 1950 to 1962, and Vice President from 1953 to 1962.