Even the name of this documentary focusses the mind on the fact that we simply must rethink the way we use energy.
It provides a basic summary of a number of alternate energy sources. But I felt that host Dick Smith, now almost 70, talked up his favourite options (notably ones that gave him nostalgia for the past) without even looking at viability. Conversely, he was deliberately suspicious of those he didn't like, even to the point of dismissing an expert report.
Climate Spectator (also critical of his slightly misleading presentation) points out that energy efficiency was only talked about briefly at the end. If energy efficiency is looked at first, then everything else becomes easier. Even the options Dick Smith didn't like.