The company's main focus is production and distribution of electrical power and other energy, in addition to business areas related to this.

It operates 17 wholly owned and 28 partially hydroelectric power plants.

[1] Skagerak Energi is a major sponsor of the first-division Norwegian football team Odd Grenland.

The company was founded on 1 January 2001 as a merger between Skiensfjordens kommunale kraftselskap (SKK) and Vestfold Kraft.

The latter had been purchasing all the power grid companies throughout Vestfold in 1999 and 2000 while had bought Telekraft in 1999.