MEATH � CAVAN 400kV TRANSMISSION LINE CAVAN � TYRONE 400kV TRANSMISSION LINE STRATEGIC PLANNING CONTEXT REPORT Document Number: CP466-ER001-00 01/04/2008

RPS has been engaged by EIRGRID to provide strategic planning guidance
in respect of the provision of the planned Cavan-Tyrone 400kV Interconnector
Project, and a 400kV transmission line connecting the existing 400kV
Woodland Station near Batterstown, Co. Meath, including a new sub-station
near Kingscourt Co. Cavan.

EirGrid asks for comments and submissions in advance of decision on preferred route for power lines in North East

EirGrid invites anyone who has not yet submitted information as part of the public
consultation process on the proposed power lines for Cavan/Tyrone and
Meath/Cavan and who wishes to do so, to email or post their submission to
EirGrid by the 11th of February, 2008

NORTHERN IRELAND AND THE REPUBLIC OF IRELAND CAVAN - TYRONE AND MEATH-CAVAN 400KV PROJECTS PRELIMINARY BRIEFING NOTE OVERHEAD AND UNDERGROUND ENERGY TRANSMISSION OPTIONS

This Preliminary Briefing Note summarises in general terms the technical and cost issues associated with implementing these two projects. The note is prepared in advance of the finalisation of the planning applications for each scheme and in advance also of a more detailed report on undergrounding. Accordingly, further detailed information on technical and cost issues will be available in due course.

ALL ISLAND GRID STUDY STUDY OVERVIEW

The All Island Grid Study is the first comprehensive assessment of the ability of the electrical
power system and, as part of that, the transmission network (�the grid�) on the island of
Ireland to absorb large amounts of electricity produced from renewable energy sources. The
objective of this five part study is to assess the technical feasibility and the relative costs and
benefits associated with various scenarios for increased shares of electricity sourced from
renewable energy in the all island power system.