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Transmission Studies

Joint Coordinated System Plan 2008 Executive Summary

This study looks at two scenarios that expand transmission and generation opportunities between 2008 and 2024 – a Reference Scenario and a 20% Wind Energy Scenario in support of the U.S. Department of Energy’s Eastern Wind Integration and Transmission Study. Future JCSP analyses will examine additional scenarios.

This study was designed to answer questions posed by a variety of stakeholders about a range of important and contemporary technical issues related to a 20% wind scenario for the large portion of the electric load (demand for energy) that resides in the Eastern Interconnection.

Eastern Wind Integration & Transmission Study (January 2010)

Western Wind and Solar Integration Study (May 2010)

The focus of the Western Wind and Solar Integration Study (WWSIS) is to investigate the operational impact of up to 35% energy penetration of wind, photovoltaics (PVs), and concentrating solar power (CSP) on the power system operated by the WestConnect group of utilities in Arizona, Colorado, Nevada, New Mexico, and Wyoming.

Western InterconnectionTransmission Path Utilization Study (April 2009)

The purpose of the study was to measure the historical utilization of the major transmission paths in the Western Interconnection during 2007 and to provide insight into where transmission congestion might be occurring.

Part 3: Historical Analysis of 2007 Actual Flows and Schedules, prepared by the Transmission Expansion Planning Policy Committee (TEPPC) Historical Work Group

High Plains Express Transmission Project Feasibility Study (2008)

The High Plains Express (HPX) initiative is a roadmap for transmission development in the Desert Southwest and Rocky Mountain region to significantly strengthen the eastern portion of the Western grid.