Of all the electricity sold in Hong Kong, buildings consume 90 per cent. The government is planning on placing a big bet on where the city's electricity should come from over the next four decades.

Mandatory energy audits - snake or ladder? The deed is done. One thousand energy audits completed. Tens of thousands of man-hours expended. Tens of millions of dollars in fees handed out. And for what? No energy audit ever saved a dollar. Only the entirely voluntary implementation of any of the measures recommended will do that.