Founded in September 2004 by journalist Carlos Arrieta and English teacher Rodrigo Arias, among others.[3] Party’s leaders acknowledge that some of the major parties like Citizens Action, have endorse environmentalist policies in Congress and oppose projects damageable for the environment,[3] but assure the need for a specific ecological party in the Assembly. With Arrieta as nominee to Congress, the party obtained 1,604 votes in 2006 and 2,901 in 2010 with no seats earned.[3] Its best results were during the 2016 municipal elections when it received a strong support in Paraiso Canton earning a seat in the Municipal Council and the Syndic of the central district.[4]