HALIFAX -- Nova Scotia's premier says he believes his province will face higher costs for the proposed Muskrat Falls hydroelectric project in Labrador.

But Darrell Dexter says he still believes the development is the cheapest option to meet Nova Scotia's future power needs.

His comments came shortly after the Newfoundland and Labrador government said revised cost estimates for Muskrat Falls are 1.2 billion dollars higher than previously forecast.

Capital costs are estimated to be 7.4 billion dollars -- though that doesn't include funding the subsea link between Newfoundland and Nova Scotia, to be covered by Nova Scotia utility Emera.

Dexter says he doesn't know what that revised cost will be.

A spokeswoman for Emera says the company will provide that figure during hearings before the Nova Scotia Utility and Review Board on the subsea link.

Opposition Liberal Leader Stephen McNeil says Nova Scotians need to know the costs of their future power bills before his party signs onto the development.

Progressive Conservative Leader Jamie Baillie also called on the government to release more information, saying the province should know what impact Muskrat Falls will have on its economy.