Chris Sutton, a chartered surveyor with Jones Lang LaSalle, said the metro would provide benefits to Cardiff, but could also transform the economic fortunes of towns like Pontypridd.
"If we can improve the infrastructure to a town like Pontypridd, then we can help regenerate it."
A conference on 'Making the Metro Happen', organised by the Metro Consortium is due to take place next Monday.
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It will be wet and windy this evening and through much of tonight with some heavy rain at times.
Welsh golfing legend Ian Woosnam has set his sights on securing a home victory at the Wales Senior Open in Newport.
It will be a bright start to Saturday, with some sunny spells. However, cloud and rain will reach the far west by late-afternoon.