Transmission System Operators
(TSOs) are responsible for the bulk transmission of electric power
on the main high voltage electric networks. TSOs provide grid
access to the electricity market players (i.e. generating companies,
traders, suppliers, distributors and directly connected customers)
according to non-discriminatory and transparent rules. In order
to ensure the security of supply, they also guarantee the safe
operation and maintenance of the system. In many countries, TSOs
are in charge of the development of the grid infrastructure too.
TSOs in the European Union internal electricity market are entities
operating independently from the other electricity market players.
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