Under the direction of the Planning Coordination Committee (PCC), the Technical Studies Subcommittee (TSS) and its respective workgroups have the primary responsibility to perform studies, maintain data files, evaluate proposed system additions or alterations, prepare reports and recommendations, and perform other such duties to ensure the reliability of the Western Interconnection.

Documents and data files prepared by TSS, include power flow and stability base case data, can be found in the "Documents" are of the TSS webpage or by clicking here. Note that base case data is only available to users who are signed in. 

To view Base Cases and Tech Studies you will need WECC website login.