Green, formerly head of events for London under Ken Livingstone, managed the handover ceremony for Beijing's Olympics and will oversee the Torch Relay, Victory and Welcome Ceremonies and the Opening Ceremonies of the Olympic and Paralympic Games.
"To decide on the Opening Ceremony idea we toured the country talking to over 500 creatives - from industries including hip-hop, brass and drama - to assess what they wanted from the event. We drew up a list of more than 100 creatives. An elite team to match the calibre of athletes at the Games. There was no B-list," he said.
Green added that he had to whittle the lengthy and costly ideas down to decide on a final product.
"We will know if the opening was a success the morning after it happens. Hopefully there will be a big buzz from it. We have a huge knowledge base of creatives and event production staff in the UK. We took the decision to hire creatives with no experience of handling events of this type, and marry them with production staff that had a lot of experience," he added.
Event Wales took place today (24 November) at Royal Welsh College of Music & Drama, Cardiff.