The 10-15X conventional generators is a good estimate, in-line with the Whitepaper that HYVR pulled. Why they pulled it is anybody's guess.
About Terra Nova, the conjecture is that they will ever get a reactor at all. HYER had a LOA before, but it fell through.
The real fun should be when the annual report comes out later this month. It will show how much they got for the brine or sludge they sold to the recycler. When the investors see that the revenue from the sale of the by-product I speculate that some of them will feel let down.