We study returns to scale in Norwegian electricity distribution companies. The scale issue of this sector has become an important political question, and it was for instance discussed by the Reiten commission (OED, 2014) in a study about the future structure and organization of the Norwegian...

In the last decade a new regulatory framework for electric utilities, aiming at a gradual liberalization of the sector, has been set in Europe. The promotion of competition among generators implies the need to separate power generation from downstream transmission and distribution activities....