Registration for Cyd Cymru opens today and will run for six weeks. Here's how the collective works:
- Residents register providing as much information as possible about their energy use
- Once registration is closed, data is collated and presented for an 'energy auction'
- Energy companies offer their best prices to the collective
- New tariffs are offered based on registration data
More top news
A young boy has been praised for his quick-thinking actions after his mother collapsed at home.
George North has ended speculation over his future by signing a new contract at Northampton.
A man who died from stab wounds in Newport has been named by police.