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.
More top news
There may be a few clear spells to start the night but towards the early hours of tomorrow morning things will turn wetter from the west.
Snowdonia is one of five locations battling it out to be crowned the best place in Wales in this year's Special Places competition.
Falling milk and lamb prices have prompted hundreds of farmers to demonstrate outside retailers’ depots and supermarkets.