Chief scientist at Greenpeace UK - Dr Doug Parr - has said the energy industry needs "real change," rather than an investigation by the Competition and Markets Authority.
What UK consumers need from this investigation is more than yet another ineffectual slap on the wrist for the big six's cartel.
We need real change to the market so that companies offering a better deal for customers and the environment are no longer shut out of the market, but more importantly we need to clear the way for alternative business models to the big utilities.
More top news
Police have been forced to close down motocross event near Sedgefield after one rider was killed and another seriously injured.
A woman hit by police gunfire during a counter-terrorism operation has been arrested after being released from hospital.
Police have been granted extra time to question a man who is being held on suspicion of planning a terror attack.