The Northern Gateway pipeline debate is heating up as British Columbia Premier Christy Clark and Alberta Premier Alison Redford face off in a battle over billions of dollars.

Of the five requirements the BC Liberals outlined in Monday’s press conference, the demand for a “fair share” of the profits is gaining the most attention. Clark said Alberta must negotiate increased benefits for B.C. from the project, or her government will not support the oil pipeline.

B.C. is due to receive $6.7-billion in tax revenues if the project is approved, while Ottawa will net $36-billion and Alberta will make $32-billion.

Clark says she is willing to fight for more compensation because B.C. carries most of the environmental risk of the project, but Redford says any negotiation would be contrary to confederation.

“We have, in our provinces, the right to resources and the income from resources,” Redford told reporters Tuesday. “We have a confederation which allows for people in each province to benefit from the resources that they have, to retain jurisdiction over those resources, and then to be part of a federal system that allows for transfer payments where there is economic success -- and those benefits get transferred across the country.”

Clark fired back, saying a discussion is needed between B.C., Alberta and the federal government to come to a fair agreement.

“I don’t think there’s any need to reinvent the constitution or change confederation,” Clark told CTV News. “All we are asking for is a fair share for British Columbia of the benefits, that we’re making sure our environmental risks are covered off on the marine side and the land side and making sure that First Nations are a part of it.”

Redford, however, doesn’t want to share Alberta’s piece of the pie.

“We will not share royalties and I've seen nothing else and would not be prepared to consider anything else at this time,” she said.

Clarkdidn’t specify how much money she considers a “fair share” for B.C. or if she’ll support the pipeline if all five requirements are met.

“I don’t think it’s possible or responsible to say before the process is even finished whether or not it’s something British Columbia can support,” Clark said.

Clark and Redford are both in Halifax this week as 13 provincial and territorial leaders gather to attend a premiers’ conference.