Regional ratepayers could lose 20 per cent of their investment in the Ruataniwha dam within the first five years if it goes ahead.
This latest development in the controversial water storage scheme, which has seen its parent company HBRIC and the Hawke's Bay Regional Council come under fire for its lack of transparency and accountability, was only brought to the table, via a report this week.
Two noted absences from the extraordinary council meeting were councillor Debbie Hewitt (conflict of interest) and the author of the report, HBRIC board chairman Andy Pearce.
According to the latter's report, clause 78 details a material change in the terms agreed with the new investor that there is now a "Call" option in which the institutional investor can compulsorily acquire 20 per cent of HBRIC's equity, at any time within the first five years after operations commence.
Mr Pearce said the deciding factor whether this option was adverse, neutral or positive was the price paid for it.