Ex ante regulation imposed at the wholesale level, which is in principle less intrusive than retail regulation, is considered to be sufficient to tackle potential competition problems on the related downstream retail market or markets.
Meastar rialáil ex ante a fhorchuirtear ar an leibhéal mórdhíola, nach bhfuil i bprionsabal chomh cunórach céanna is atá rialáil mhiondíola, a bheith leordhóthanach chun dul i ngleic le fadhbanna iomaíochta a d'fhéadfadh teacht chun cinn ar an margadh nó sna margaí miondíola iartheachtacha gaolmhara.