The EU-28 has approximately 40 Transmission System Operators today, managing around 200,000 kilometers of network. For the most part, these companies are located within their historic geographical scope. The size of the networks varies to a great degree as it is directly related to the size of the countries in which the Transmission System Operators operate.

The Transmission System Operators are regulated companies that build and operate pipelines, and they sell their networks' transmis

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