Its main purpose was to plan and apply a national energy policy which, through the exploitation of the domestic products and resources, would distribute cheap electric power to all Greek citizens.

As a result, the Greek government's shareholding decreased from 51.12% to 34.12%, which is currently held by the country sovereign wealth fund, the Hellenic Corporation of Assets and Participations (HCAP).

The company’s shareholding structure as of 10 March 2023 was as follows:[8] In 2001, PPC carried out a share flotation on the Athens Stock Exchange and consequently was no longer wholly owned by the government, although it was still controlled by it with a 51.1% stake until 2021.

In 1982, PPC developed the first wind farm in the world, combined with a photo-voltaic station to supply electricity to the isolated power system of the island of Kythnos.

[citation needed] Legislation before Parliament in 2013-14 included making the PPC responsible for collection of the real estate tax, part of the EU/IMF/ECB requirements for the financial support of the economy.

Lukoil's asset-a special purpose vehicle called Land Power owns an 84MW system located in the province of Dobruja (Dobrogea), while a 470ha wind farm in the communes of Dorobanțu and Topolog generates more than 200GWh per year.

[5] In 2005, PPC was found to have awarded a contract for the construction of a conveyor-belt system for waste produced at its generating plant in Megalopolis without following correct advertising procedures under EU public procurement law.

PPC had therefore decided to negotiate a deal for the construction instead of advertising the opportunity; the court held that these circumstances did not quality as "extreme urgency" for the purposes of the procurement regulations.