CALGARY — The Alberta government did not consult with the oil and gas sector before announcing a sweeping set of plans it says it could use to challenge the proposed federal greenhouse gas emissions cap, industry sources say.

Alberta intends to invoke legislation allowing it to defy a federally proposed cap on emissions from the energy industry in opposition to Prime Minister Justin Trudeau.

Companies are still digesting Premier Danielle Smith's move to announce a forthcoming motion under the province's Sovereignty Act.

Alberta Premier Danielle Smith says her government is looking to challenge the proposed federal greenhouse gas emissions cap, including by passing legislation to give the province exclusive authority over emissions data and banning federal employees from designated oil and gas sites.