Look at it this way: if Tasmania ceased to exist, CO2 emissions from power generation would increase, because on average Victoria would need to run their coal p

Look at it this way: if Tasmania ceased to exist, CO2 emissions from power generation would increase, because on average Victoria would need to run their coal plants more. That strikes me as a pretty pragmatic definition of "100 percent powered by renewable". Edit: per comments downthread, perhaps they're actually not quite there yet, but still I think the principle holds if internal generation is exclusively renewable and net imports are negative.