The NEG will get blocked in its current form, leading to the continued stalemate which results in higher energy prices (which isn't a bad thing for IFN cashflow on exiting assets).
It will either then become more favourable for renewable energy development or become a federal election issue next year. Labor are very clear about their pro-renewable energy policies. It's a shame for IFN that Labor have an unlikeable union hack running the party because if they had somebody palatable they'd surely win the next election and a golden age for renewable energy development would begin for Australia (though they'd probably ruin every other aspect of the Australian economy...).
IFN Price at posting:
68.0¢ Sentiment: Buy Disclosure: Held