Promitheas competed in one of Greece's national categories for the first time, in the 2013–14 season, when the club played in the Greek C League (4th Division).

Promitheas Patras played in the top-tier level Greek Basket League for the first time, in the 2016–17 season.

In the 2017–18 Greek Basket League season, the technical leadership of Promitheas Patras was taken over by the club's sports director Makis Giatras.

The club also signed several new players: Toutziarakis, Saloustros, Dimakos, Releford, Evans, Lypovyy, Milošević, Hall, Ellis, Murry, and Prather.

That same season, the team also participated in the 2017–18 Greek Cup competition, in which they again finished in 10th place, after beating Koroivos and Lavrio, but then losing to Kolossos Rodou.

Promitheas Patras directly joined the last 16 stage of the 2018–19 Greek Cup competition, where they faced Aris Thessaloniki.

They won that game in Patras, by a score of 86–65, and thus proceeded to the Greek Cup's Top 8 phase.

With a record of 8 wins and 6 losses,[6][7][8][9] Promitheas finished in 4th place in the group standings, and booked a ticket to the competition's knockout phase of 16.

It is also known by its original official name, which is PEAK, which stands for Pampeloponnisiako Ethniko Athlitiko Kentro Patron.

It comprises an area of 2,500 square meters, and contains three basketball courts, a state-of-the-art fitness center, and an ergo-metrics laboratory (Promitheas Lab).

Since the summer of 2014, Promitheas Patras has run a "Youth Development Program" of sports scholarships.

The program's scholarship includes full financial coverage of the expenses by the club's association for: the athlete's accommodations in Patras (in the hostel of Dim.

& Lilis Stavropoulou, located in Kastellokampos, Patras, in air conditioned student dormitories), their daily nutritional needs, their transportation needs, their sports clothing, and their education.

The club also covers the tuition fees of the youth athletes, at Kotronis Schools, in Nafpaktos, which is the region's top secondary level educational institution.