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
In today's Newsweek Wales, Carl talks to Dr David Bailey from The BMA about how to ease the pressure on the Welsh NHS.
Plans to open a branch of Sainsbury's in a new development in a Pembrokeshire town have been criticised by local businesses.
More than half a million people are expected to take part in this weekend's 'Big Garden Birdwatch', organised by the RSPB.