The company has a yearly normal production of 9.5 TWh of hydroelectric power, develops and maintains the power grid in 14 municipalities as well as deliver fiberoptic broadband (Altibox) and other telecommunication services, natural gas distribution, district heating, retailing and installation services.

The company is owned by the municipalities of Stavanger (45.74%), Sandnes (19.53%), Sola (8.74%), Time (5.83%), Klepp (4.23%), Hå (3.78%), Randaberg (3.28%), Eigersund (2.95%), Strand (2.53%), Hjelmeland (0.99%), Gjesdal (0.93%), Lund (0.71%), Bjerkreim (0.51%) and Kvitsøy (0.23%).

Through Lyse Kraft DA (74.4%) the company owns the hydroelectric power stations of Suldal I, Suldal II, Røldal, Novle, Kvanndalen, Middyr, Svandalsfona, Hjelmeland, Breiava, Flørli, Hauskje, Hetland, Lysebotn II, Maudal, Oltesvik, Sviland, Tjodan, Vasstøl, Midtlæger, Ulla-Førre and Sira-Kvina.

Lyse's roots go back to the establishment of the first electricity plants at the beginning of the 20th century, which became the engine in the industrialization and modernization of Norway.

In 1947, the company Lyse Kraft DA was established with the aim of expanding the hydropower resources in Lysebotn.