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