Colac’s economy Rising energy costs harming employers Colac’s major employers have taken a massive financial hit with energy costs more than doubling this year. By Colac Herald ContributorJune 28, 2017 $86-million injection into shire’s economy Landowners and developers gained council approval last year to invest an unprecedented $86 million in Colac Otway Shire. By Colac Herald ContributorFebruary 15, 2017