ADDITIONAL INTERCONNECTION BETWEEN NORTHERN IRELAND AND REPUBLIC OF IRELAND TECHNICAL REPORT - PART 1 � STUDIES APRIL 2001 TO JULY 2004

A suite of technical studies were undertaken jointly by a team of engineers from ESBNG and
NIE over the period April 2001 to July 2004. The presentation of the results from these
studies is provided in this report. The purpose of the technical study work is to quantify the
improvement in transmission capacity and system security that would be provided by each of
the interconnection options.