Ofgem has alleged that three companies – energy suppliers Economy Energy and E (Gas and Electricity) and consultancy Dyball Associates – have broken competition law.

In a “statement of objections”, the regulator alleges that the three companies had an agreement that prevented the two suppliers actively targeting each other’s customers and that they shared information.

Dyball is alleged to have facilitated this arrangement by designing, implementing and maintaining software systems that allowed customer lists to be shared.