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."
More top news
Welsh Assembly Members will vote today on amendments to the violence against women, domestic abuse and sexual violence bill.
We look at a flagship school scheme which aims to improve the performance of Welsh pupils from deprived backgrounds.
A cold start to the day but lots of sunshine. Likely to remain largely dry into the afternoon with strong winds continuing.