The Metro Consortium, which includes Admiral insurance, British Gas and Cardiff Business School, says the transport system is an opportunity to rethink the role of towns and communities across the Valleys.
The report's author, Mark Barry, said the metro would simply connect connect the region, and "give the region the opportunity to be more economically effective."
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It's certainly not the brightest of starts to the day, with drizzly rain in places.
It will feel much milder tonight that it did last night, with patchy showers around the coasts.
Well what a difference a day makes! It's the calm after the storm today!