Turleenan – Border Line is a 400kV overhead line with a length of 33.9km from Turleenan, Northern Ireland, UK, to North-East Clontibret Border, Northern Ireland, UK.

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


Turleenan – Border Line is an overhead line that will be operated by Northern Ireland Electricity Networks. The line will carry alternating current (AC) through double circuit cable.

The development of the Turleenan – Border Line project has been approved by the The Office of Gas and Electricity Markets.

Turleenan – Border Line project development status

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The construction works on the Turleenan – Border Line project were commenced in 2020 and commissioning is expected in 2021.

About Northern Ireland Electricity Networks

Northern Ireland Electricity Networks Ltd (NIE Networks), a part of the Electricity Supply Board, is a provider of electric network products and services. It constructs and maintains the electricity transmission and distribution networks in Northern Ireland. The company also owns the electricity transmission and distribution network and operates the electricity distribution network. NIE Networks connects demand and renewable generation customers to the transmission and distribution networks. The company offers meters; manages market registration processes; provides meter reading services; and maintains data to support the retail and wholesale electricity customers.


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.