A three bedroom house which costs £75,000 to build and will have no gas or electricity bills will be unveiled later today.
The company behind it, Western Solar Ltd, claims the cost of the build will also be recouped as the homes will generate £1,000 worth of excess electricity each year.
The low cost home which has been built in Pembrokeshire will initially only be constructed for Welsh housing associations.
Western Solar, which is based near Cardigan, says there is a long waiting list for the homes but they do plan on building a village of them in the near future.
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As research shows a third of workers in Wales will be aged over 50 within five years, the Welsh Government says employers should prepare.
The special one-day session follows the announcement of hundreds of job losses at the Port Talbot plant.
Today is shaping up to be the better day of the week! Dry and bright, but distinctly chilly!