Age: AUSTRALIANS would need to cut their energy use by an average of 16 per cent over the next decade under an ambitious proposal before the Gillard government to lift energy efficiency and help tackle climate change. Expert advice to the government, obtained by The Age, recommends boosting the nation’s energy efficiency by 30 per cent by 2020 to lift economic productivity and help Australia move to a low-carbon future. But the report – prepared by a task group set up by former …