Business Green: Australia’s first commercial-scale smart grid was given the go-ahead late yesterday, in a project that the government says will help Australians to save power and connect domestic renewable energy to the grid. The AU$100m (£46.3m) Smart Grid, Smart City demonstration project will commence later this year in Newcastle and parts of Sydney, running until 2013. Minister for Climate Change Penny Wong said Smart Grids could give Australian households and businesses the tools to …