Down Jones: Australia’s Energy Minister Martin Ferguson on Friday launched the federal Labor government’s A$435 million renewable energy demonstration fund, designed to boost the use of solar, wind and other renewable technologies to meet a 2020 target to generate 20% of the nation’s energy from renewable sources. But Ferguson ruled out any move to legislate so-called feed-in tariffs – where a premium rate is paid for electricity fed back into the grid from renewable sources – already in place in …