Leading coordination for
Enhanced reliability of supply

Discover our mission

A team of experienced engineers
from several European countries

Discover our team

Working together to ensure and improve the reliability
of Europe’s electricity supply

See our vision of the future

Updates Alert

Stay informed about our latest news, subscribe to our newsletter



Our Shareholders

Coreso has 9 shareholders which are Transmission System Operators (TSOs):

50hertz: German TSO which ensures the operation, maintenance, planning and demand-based development of its transmission grid. It is responsible for the proper management of the entire electricity system in the German federal states of Berlin, Brandenburg, Hamburg, Mecklenburg-Western Pomerania, Saxony, Saxony-Anhalt and Thuringia.

EirGrid: Since 2006, EirGrid has operated and developed the national high voltage electricity grid in Ireland. EirGrid is a state-owned company. EirGrid operates the flow of power on the grid and plan for its future.

Elia: Belgian TSO and is responsible for the transmission of electricity. Elia owns all of Belgium’s 150-380-kV grid infrastructure and almost 94% of its 30-70-kV grid infrastructure.

National Grid ESO : The Electricity System Operator (ESO) is a legally separate business within the National Grid Group. The ESO became a legally separate entity within the National Grid Group on 1st April 2019. Separating the ESO business from National Grid Electricity Transmission provides transparency in decision-making and gives confidence that everything they do will promote competition and is ultimately for the benefit of consumers.

REE: Spanish TSO in electricity system operation and transport which guarantee the safe and continuous supply of electricity throughout Spain, and to develop a reliable transport network to support social progress.

REN: Portuguese TSO responsible for operating, maintaining and developing the transmission in very high voltage electricity and overall technical management of the Portuguese National Electricity System. They are also responsible for the transport of high-pressure natural gas and overall technical management of the Portuguese National Natural Gas System, guaranteeing the reception, storage and regasification of LNG and underground storage of natural gas.

RTE: French TSO is the company responsible for operating, maintaining and developing the French electricity transmission network.

SONI: SONI is the electricity System Operator for Northern Ireland. From their control centre in Belfast they ensure that power flows where and when needed. They bring power from those who generate energy, and supply the distribution network that brings power to individual homes, farms and businesses. Since 2014, SONI is responsible for planning for the future of the grid, while Northern Ireland Electricity Networks is responsible for maintenance, repairs and construction of the grid.

TERNA: Italian TSO is the primary owner of Italy’s National High Voltage Electricity Transmission Grid, with over 62,000 km of HV lines throughout Italy. Terna is responsible for nationwide energy transmission and dispatching and so for the safe management of energy flows across Italy, guaranteeing the balance between electricity supply and demand 24/7.

coreso-teamWe are a team of experienced engineers from several European countries working together to ensure and improve the reliability of Europe’s electricity supply.

Electricity plays a crucial role in our daily lives. Since it is available at the flick of a switch, we often forget about the complex high-voltage system that forms the link between generation and demand. Europe’s high-voltage grids are highly interconnected, and transnational coordination is essential for security of supply.

At Coreso, we provide coordination services for the secure operation of the high-voltage electricity system for over 55% of the population of the European Union.

Our objective is to help European Transmission System Operators (TSOs) to maintain optimal security of supply in Europe by providing regional coordination services.