At a federal Senate energy committee hearing in Halifax, B.C. Conservative MP Richard Neufeld said it would be "great" if the federal government would underwrite loans for electrical generation in all provinces.
"Why Nova Scotia doesn't underwrite the $6.2 billion project itself?" he asked.
Nova Scotia Premier Darrell Dexter responded that the borrowing rate for Ottawa is much lower than it would be for his province.
In November, N.L.'s Crown-owned Nalcor Energy and Nova Scotia's Emera Inc. agreed on a $6.2 billion plan to generate 824 megawatts of power at Muskrat Falls on Labrador's Churchill River.
According to the deal, electricity will be moved first to Newfoundland with much of it later relayed through Nova Scotia by underwater cables.
In February, Newfoundland and Labrador Premier Kathy Dunderdale said she expects an answer from Ottawa in March regarding the request for a loan guarantee.
The project to harness power from Muskrat Falls in Labrador was billed by former Newfoundland and Labrador premier Danny Williams as one of the last large green energy projects in North America.
Prime Minister Stephen Harper did not make any promises when he visited St. John's in February.