Atsi HPP is an average-head derivation type plant. It is built on the river Adjaristsqali, in 30 km from city Batumi, in the southern-west side of Adjara Republic. HPP works with seasonal schedule, without regulation.
Atsi HPP was put into exploitation in 1937 year and was launched into Georgian energy system in 1941 year. Design capacity of HPP is 103.0-mln kW.h.
The reconstruction of N1 unit was carried out on Atsi HPP for increasing capacity, in result, installed capacity consists 18.4 MW, instead of design installed capacity 16.0 MW.