Is Snowy 2.0 still worth it after years of cost blowouts?

Snowy 2.0's budget may have blown out again, with a new cost reassessment putting the price tag at 22 billion dollars, up from an original estimate of just 2 billion when the project was announced in 2017.
There are big questions now about whether a full cost-benefit analysis will be made public, and what the latest figure means for Australian taxpayers and energy consumers.