The quiet Victorian town of Newstead – population approaching 500 – has a big ambition: to source all its electricity needs without burning any fossil fuels at all. Within five years, it wants all of its power to come from renewable energy sources. Newstead is not unique in that goal. At least a dozen towns around Australia, including Yackandandah, Tyalgum, Byron Bay and Lismore, have declared a similar ambition, even if most are allowing themselves…