Globe and Mail: Its a project, or a series of projects, to stretch the imagination. Its fraught with problems economic, environmental and political. Its been thought about before, but never seriously considered. So why would anybody dream about a pan-Canadian power grid? The answer is that nobody would, at least not now. But circumstances change. As they change, what used to seem unthinkable and undoable might seem worth pondering. Canada has a double challenge in energy policy: to increase supply of cleaner...