Sounds about right for his party. They love dumping insane amounts of taxpayer money on obsolete technology. They literally stopped the rollout of a fibre network nationally part way through to switch it with a bullshit "multi technology" solution which turned out to be a dogs breakfast.
EDIT: for comparison, the cost to build a 100% solar wind and battery system that would supply all the power needs for Germany, a nation with more than double Australia's electricity demand, was estimated to be $367 billion (source)