ADMIE

File:Logo admie 2020.png

Independent Power Transmission Operator S.A. (IPTO or ADMIE from "ΑΔΜΗΕ" - Ανεξάρτητος Διαχειριστής Μεταφοράς Ηλεκτρικής Ενέργειας A.E. in Greek) is the Transmission System Operator for the Hellenic Electricity Transmission System. The mission of the company is the operation, control, maintenance and development of the national transmission system of Greece to ensure the reliable and efficient electricity supply, as well as the operation of the electricity market following the principles of transparency and equality.

Since February 2012 it is independent in operation and management, retaining the necessary independence required for compliance with 2009/72/EC EU Directive.{{Cite web|url=http://www.admie.gr/en/news/press-releases/press-release/article/695/|title=Launch of IPTO|last=|first=|date=2012-02-01|website=ADMIE|publisher=|access-date=2016-12-03|archive-date=2016-12-22|archive-url=https://web.archive.org/web/20161222085810/http://www.admie.gr/en/news/press-releases/press-release/article/695|url-status=dead}}

Till the end of June 2017 it was a wholly owned subsidiary of Public Power Corporation of Greece (PPC S.A.).

As of June 20, 2017 ADMIE follows the model of proprietary separated Administrator (Ownership Unbundling) and is fully harmonized with the Directive 2009/72/EC.

The current shareholder structure of ADMIE is as follows:

51% ADMIE HOLDINGS Inc.,

25% DES ADMIE S.A.,

24% State Grid Europe Limited.{{Cn|date=May 2024}}{{Cite web |title=Admie portal |url=https://www.admie.gr/en/company/about-us#:~:text=ADMIE%20HOLDING%20holds%20a%2051,largest%20and%20most%20profitable%20company.}}

Until 31 January 2012, ADMIE was a joint company with the Hellenic Electricity Market Operator S.A. (now called LAGIE) under the name "Hellenic Transmission System Operator S.A.".{{cite web|url=http://www.desmie.gr/en|title=Home - ΔΕΣΜΗΕ|publisher=|accessdate=24 September 2014|archive-date=23 September 2014|archive-url=https://web.archive.org/web/20140923075831/http://www.desmie.gr/en|url-status=dead}}

ADMIE's compliance with the requirements applicable to the model of the Independent Transmission Operator was certified by the Regulatory Authority for Energy (RAE) in December 2012.

ADMIE S.A. is a member of ENTSO-E (the European Network of Transmission System Operators for Electricity).[https://www.entsoe.eu/about-entso-e/inside-entso-e/member-companies/Pages/default.aspx ENTSO-E Member Companies]

In summer 2022 analysts said that if Russian gas was completely stopped ADMIE would struggle to cope.{{Cite web |last=akoutsogiannis |date=2022-07-21 |title=Russian Gas Winter Cutoff Could See Rationing in Greece, Blackouts |url=https://www.thenationalherald.com/russian-gas-winter-cutoff-could-see-rationing-in-greece-blackouts/ |access-date=2022-07-29 |website=The National Herald |language=en-US}}