Reuters: Australia’s largest energy retailer, AGL Energy Ltd (AGK.AX), revived plans to build a major wind farm on Monday, after the government vowed to increase investment security in the sector. AGL said the Macarthur wind farm, previously estimated to cost A$800 million ($716 million), will be constructed in a joint venture with New Zealand’s state-owned generator Meridian Energy Ltd [MEREN.UL], with AGL taking all of the wind farm’s energy output and renewable energy certificates, it said …