Plaid Cymru leader Leanne Wood insists her plan for a not-for-profit company to take on the big energy firms is fully costed and would be cheap to set up.
She unveiled a raft of policy ideas at the party's annual conference in Aberystwyth.
More top news
Becoming cloudier from the north and west during the evening but some places continuing to see some clear spells
A council in Wales has had to pay more than £8,600 to end a hire contract for a Porsche its former boss used to drive.
Cold weather is again on the way for the UK. Colder conditions will spread south, bringing a mixture of sunny spells and snow showers