Inter-regional transmission development for Eastern Wind Integration and Transmission Study

This paper describes the top-down value based transmission planning process for Eastern Wind Integration and Transmission Study (EWITS) with the consideration of large scale wind generation over the Eastern Interconnect footprint. Achieving 20% to 30% wind energy penetration across the Eastern Interconnect will require significant transmission infrastructure expansion. The transmission overlays developed for the EWITS high wind penetration scenarios consist of multiple 800kV HVDC and EHV AC lines with similar levels of new transmission and common elements. A brief look at cost perspective and carbon implications is provided as well.