In the coming months, focus groups were created to shape the constitution and the political positions of the body, which were adopted by the first congress of the party in May 2003 at Panteion University.

In the prefectural elections of 2006, the Ecologists Greens supported the "Ecology -Solidarity" in Thessaloniki, that won 4.6% and acquired 2 seats on the Prefecture Council of Thessaloniki (Tremopoulos Michalis and Gogakou Dimitra), the "Eco-Athens" in the municipality of Athens, that took 1.4% of the votes, as well as 53 other municipal and County sets in rest of the country.

Alexis Tsipras' called for unity against the Memorandum[2] and the Ecologists Greens decided to support SYRIZA's electoral list for the upcoming legislative election.

[5] On September 2018 cabinet reshuffle of the SYRIZA / ANEL/ OIKOLOGOI PRASINOI coalition, Giorgos Dimaras was appointed Vice Minister of the Environment and Energy Ministry of the Greek Government.

Following the finish of the Congress the internal procedure for voting and electing the new members of the General Political Secretariat and the Panhellenic Council was completed, while during the Congress the new co-presidents of the ECOGREENS - mrs Katerina Andrikopoulou - Sakorafa and mr. Dimitrios Politopoulos have already been elected to head together the management of the party.

The annual congress is the highest political entity of the party and was attended by a record of 180 members.During this annual congress the most important issue brought for discussion and voting referred to the consideration of a possible election coalition for the next coming National Elections for the Greek Parliament, with "Prasinoi", another party of the general Ecological politics, formed well after ECOGREENS (Oikologoi Prasinoi) in 2020, and "Pirates" a newly established Greek party, in order to achieve better voting results from Greek citizen in total .

With the following European Parliament Elections held in June 2024, lot of serious decisions shall be taken during continuous meetings of the General Political Secretariat as well of the Panhellenic Council .

The basic principles of the Ecologists Greens (Oikologoi Prasinoi), as determined by their constitution[6] are: sustainability, social justice, nonviolence, direct and participatory democracy, respect for diversity, decentralization and subsidiarity, protect and restore natural ecosystems, the quality of life, personal & social responsibility, equity and anti-austerity.