The scoping study of the biophysical and economical impacts for the proposed 500 kV transmission line between Alberta and British Columbia presents the identification of the most relevant potential environmental impacts that could be produced as a result of the execution of the transmission line project. International, national and provincial guidelines and manual have been used in order to enforce the best practice of scoping for the proposed project. This Masters Degree Project (MDP) is aimed to provide to the affected and interested parties with a preliminary assessment of the most important biophysical and economical impacts that could result from the construction of a 500 kV –AC interprovincial transmission line between Alberta and British Columbia (BC) as proposed by the Alberta Electric System Operator (AESO) on its 2009 Long-Term Transmission Plan. This document will present relevant information for a sound decision-making process within the provincial environmental agencies, and for the future benefit of the final and official environmental impact assessment. This MDP should not be considered as an official scoping study of the proposed transmission project, as the author is not a registered environmental consultant, and has been prepared for educational purposes only.