Department of Climate, Energy and the Environment All details, letters, emails and other correspondence from third parties acting on behalf of EirGrid or ESB/ESB Networks regarding the North South Interconnector to the Department of Environment, Climate and Communications, on or after 1 January 2015. All details, letters, emails and other correspondence from third parties acting on behalf of the Department, EirGrid or ESB/ESB Networks regarding the North-South Interconnector to Cavan/Monaghan/Meath County Councils, on or after 1 January 2015.