Campaigners meet over Loughor Estuary coal-gas plans
14 August 2013 Last updated at 19:14 BST
How we generate our energy is under the spotlight once again.
It comes as a company says it would like to burn coal underground and use the gas to generate electricity.
If given planning permission, it could mean drilling under the Loughor Estuary near Llanelli, one of Wales' most protected natural habitats.
The process is called coal gasification, and has already created some local opposition.
Cemlyn Davies reports ahead of a meeting of campaigners in Llanelli.