EWITS is the Eastern (U.S.) Wind Integration Transmission Study project. This is a high-level analysis of transmission needs, assuming a 20% or 30% contribution from wind energy, spread across all of the windy areas in the Eastern U.S. and serving all the loads in the Eastern U.S.
Eastern Wind Integration and Transmission Study: Executive Summary and Project Overview
http://www.nrel.gov/docs/fy10osti/47086.pdf (PDF 1.7 MB)
It will also be posted at the EWITS website where additional information on the study and the roll out can be found. http://www.nrel.gov/ewits
Source: National Renewable Energy Laboratory (NREL)