E-CO Energi was created in 1892.
Skagerak Energi was created in 2001.
Østfold Energi was created in 1900.
Eidsiva Energi was created in 2000.
Industri Energi was created in 2006.
Bodø Energi was created in 1909.
Askøy Energi was created in 1995.
Trondheim Energi was created in 1901.
Natur-Energi was created in 2007.
Agder Energi was created in 2000.
Akershus Energi was created in 1922.
Lyse Energi was created in 1999.
Narvik Energi was created on 1913-12-21.