Knockraha – Great Island Line is a 400kV overhead line with a length of 108km from Knockraha, Cork, Ireland, to Great Island, Cork, Ireland.

The project, which is currently under construction, is expected to be commissioned in 2021.


Knockraha – Great Island Line is an overhead line that will be operated by EirGrid. The line will carry alternating current (AC) through double circuit cable.

The development of the Knockraha – Great Island Line project has been approved by the Commission for Regulation of Utilities.

Knockraha – Great Island Line project development status

The construction works on the Knockraha – Great Island Line project commissioning is expected in 2021.

About EirGrid

EirGrid Plc (EirGrid) is a power company that provides energy transmission and market services. The company plans, operates, maintains, monitors, and develops electricity transmission systems. It develops infrastructure required to support, schedule and dispatch electricity generation. EirGrid offers services such as power generation, ancillary services, billing and metering services, power outage information, automatic generation control, operating reserve, reactive power, black start, and system support services, among others. The company also operates and maintains the national electricity grid.


All publicly-announced T&D Line & Substation projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects is sourced through secondary information sources such as country specific utility players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.