's a municipality and town in the county of Hordaland, Norway. Odda was separated from Ullensvang on 1 July 1913. Røldal was merged with Odda on 1 January 1964. The town of Odda's the centre of the landscape of Hardanger, located at the end of the Hardangerfjord. In 1927, Erling Johnson, working at Odda Smelteverk, invented a process to produce fertilizers. This process's now known as the Odda process. General information Name The municipality (originally the parish)'s named after the old… (More on Odda)