Many years ago, I was a member of OCU, but later I had to cancel my membership. Recently, I saw a membership offer and signed up again. It was only for a couple of months, but... the experience couldn’t have been more positive!!! The organisation’s legal department opened a case regarding an abuse of power by an electricity supplier (NEXUS Energía) that I sued, and they won! I’d really love to stay with them and keep my subscription, but sadly I’ve had to cancel it again.
Consumer: if you can afford to have OCU on your side, my advice is: don’t hesitate!