Newfoundland and Labrador Premier Kathy Dunderdale says the last details are finalized on the Muskrat Falls deal, but the costs of construction at the site have fluctuated as progress continues.
Ed Martin, President and CEO of Nalcor Energy, said the overall cost is a floating target as details change.
"We are still in the process of letting some contracts, some significant contracts, although we have let very, very many," Martin said.
"We need to get a full picture, and I would say you can't hold me to a date right now, but as soon as we get the last of the major contracts in place, we'll have a pretty good idea again of where this thing is going to end up."
According to Martin, final numbers should be expected in March or April 2014.
Check out the full episode of this week's On Point with David Cochrane, above.