Exhibit 21.1

List of significant subsidiaries

			Name			State or Other Jurisdiction of Incorporation Or Organization
			IE US Holdings Inc.			Delaware, United States
			IE US Development Holdings 3 Inc.			Delaware, United States
			IE US Hardware 1 Inc.			Delaware, United States
			IE US Hardware 3 LLC			Delaware, United States
			IE US Hardware 3 Holdings LLC			Delaware, United States
			IE CA 5 Holdings Ltd.			British Columbia, Canada
			IE CA Leasing Ltd.			British Columbia, Canada