Behovet for dette direktiv kan dels begrundes i den forskel i konkurrenceevnen, der stadig eksisterer mellem vedvarende og konventionelle energikilder, dels i de eksterne omkostninger, der undgås med denne type teknologi.
In order to justify the need for this directive, we must bear in mind, on the one hand, the differing degree of competitiveness still existing between renewable energy sources and conventional sources and, on the other, the external costs obviated by this type of technology.