Business Report: The imminent departure of the dynasty of US President George W Bush from the White House is great news for far too many reasons to list here, but chief among them is that it paves the way for a potentially major shift to an alternative energy economy. Add to that the possibility that, after more than a century, the planet will no longer be held hostage by the financial interests of the world’s oil barons. US president-in-waiting Barack Obama announced his plan for a so-called …