The Greek Parliament's Institutions and Transparency Committee has endorsed the appointment of Vassiliki Thanou, former chief of the Supreme Court, as head of country's independent Competition Commission.
Her appointment was backed by MPs from SYRIZA, Independent Greeks (ANEL), the Union of Centrists and Golden Dawn.
European Union state aid regulators on Wednesday approved power backup schemes in Greece, Germany, France and three other EU countries, saying that these would ensure security supply in the event of blackouts.
The European Commission said the electricity capacity mechanisms comply with the bloc's rules aimed at ensuring a level playing field.
The European Commission said on Thursday it had approved a Greek auction scheme for the production of renewable electricity, saying it would aid climate targets while preserving competition.
Under the programme, the country will organize auctions for wind and solar projects to increase competition and lower costs to consumers.