Leading coordination for enhanced reliability of supply



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50hertz employs approximately 800 people and 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.


Elia is Belgium’s transmission system operator 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-gridNational Grid

National Grid is an international electricity and gas company and one of the largest investor-owned energy companies in the world. It plays a vital role in efficiently, reliably and safely providing energy to millions of customers across the UK and the northeast of the USA.


On January 29th, 1985, Red Eléctrica de España was born – the first company in the world exclusively involved in electricity system operation and transport.

It all started with a high-voltage electricity line 10,500 km long. Now, 30 years later, that network stretches to more than 42,000 km with a workforce of over 1,700 people. Our objective is to guarantee the safe and continuous supply of electricity throughout Spain, and to develop a reliable transport network to support social progress. It’s an objective that we’re as committed to today as we’ve always been.


REN – Redes Energéticas Nacionais is 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 is the company responsible for operating, maintaining and developing the French electricity transmission network.



The Terna Group was the first independent operator in Europe and is the seventh largest in the world in terms of number of kilometres of operated lines. It is also 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.



Relevant links



ENTSO-E is the European Network of Transmission System Operators for Electricity, founded in December 2008. ENTSO-E coordinates the cross-border system operations, system development and electricity market activities of 42 TSOs from 34 countries.


APX Group is a joint energy exchange for the UK and the Netherlands operating the spot markets for electricity in the Netherlands, the United Kingdom and Belgium.



The JAO is a joint service company of twenty Transmission System Operators (TSOs) from seventeen countries*. It will mainly perform the yearly, monthly and daily auctions of transmission rights on 27 borders in Europe and act as a fall-back for the European Market Coupling.


The European Power Exchange is an exchange for power spot trading in Germany, France, Austria and Switzerland.



German and Dutch engineers working in the SSC provide the grid administrators TenneT and Amprion with supra-regional security calculations. In this way, TenneT and Amprion aim to support the management of security of supply for the high-voltage grids of Germany and the Netherlands.



Comprising a group of thirteen TSOs, TSC is responsible for providing a safe electricity supply to more than 185 million Europeans and is committed to improving the security of the electricity supply across Europe. This initiative encompasses a permanent TSO Security Panel (group of security experts) and operates a shared IT platform for exchanging data and assessing mutual security needs.



Security Coordination Centre SCC, Ltd Belgrade (SCC) is the first Regional Security Coordination Initiative (RSCI) in the Southeast Europe (SEE), established as a company. SCC’s objective is to develop necessary services defined by ENTSO-E’s Policy Paper „Future TSO Coordination for Europe” and by Multilateral Agreement on Participation in Regional Security Coordination Initiatives (MLA) in order to fulfill operational planning standards which will be defined by the European NC/GL.