Horta – Mercator Line is a 380kV overhead line from Horta, Brussels, Belgium, to Mercator, West Flanders, Belgium.

Construction works on the Horta – Mercator Line started in 2018 and the project was commissioned in 2019.


The Horta – Mercator Line, which is an overhead line, is being operated by Elia Group. The Horta – Mercator Line is an upgrade line. The line carries alternating current (AC) through double circuit cable.

Horta – Mercator Line project development status

The development of the Horta – Mercator Line project was approved by Electricity Regulation Commission and Gas (CREG), Belgium in 2018 and the project works were completed in 2019.

About Elia Group

Elia Group SA (Elia) formerly known as Elia System Operator SA, is a transmission system operator that owns and operates high-voltage electricity transmission systems in Belgium and Germany. The company transmits electricity from generators to distribution system operators and industrial consumers. Elia also imports and exports electricity from and to neighbouring countries. It offers various ancillary services, including primary reserve, secondary reserve and compensation for grid losses, among others. The company also offers a range of consultancy and engineering services to third party system operators. Elia is headquartered in Brussels, Bruxelles-Capitale, Belgium.


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.