Kako bi ispunile tu obavezu, države članice mogu birati između tri opcije: potpuno razdvajanje na nivou vlasništva; nezavisnog operatera sistema van vertikalno integrirane kompanije, ili nezavisnog prijenosnog operatera u okviru kompanije, ali uz dovoljne garancije da je on nezavisan.
To meet that obligation, member states can choose among one of three options: full ownership unbundling; an independent system operator outside of the vertically integrated company; or an independent transmission operator within the company, but with sufficient guarantees for its independence.