Yep, although Basslink isn't the main reason QLD has had rather high prices. More the LNG projects coming online and some of the plants in QLD going down for maintenance. South Australia also closed their last coal power plant. These few things have substantial effects on the spot price.
Oakey and the sunset agreement is more of a hedge against ridiculous summer pricing so EPW doesn't have to worry about the wholesale price. I think the really interesting part will be the US expansion and the growth of their retail customer base.