Electricity to power Welsh homes could be imported from Irish windfarms, as work begins to lay cables under the Irish Sea.
The power would be fed into the UK energy grid via points at Bangor and Pembroke.
One Assembly Member is warning that the project could leave Wales dependent on Ireland in order to keep the lights on.
Owain Phillips reports.
More top news
After a dry end to the day, there'll be a few showers this evening Winds getting stronger overnight.
If you missed tonight's episode of Wales This Week, Test Tube Triumph, you can now catch up here
Jean Davies said her life had become "intolerable". Her daughter Bronwen speaks to ITV News about the decision.