The Dorset AONB was designated in 1959. It covers nearly all of the Dorset coast and significant areas inland. The geology is strongly expressed along the Jurassic Coast, a World Heritage Site, and it gives rise to a varied landscape of downland, ridges and vales.
The Dorset AONB project will replace 8.8km of overhead line near Dorchester with an underground connection, permanently removing 22 pylons from the landscape. It received planning consent from West Dorset District Council in June 2018.