User:Akhalkalaki HPP/sandbox

The Project

Akhalkalaki HPP Project is a hydropower scheme under development by AIS LLC, located on Paravani and Korkhi Rivers in Samtskhe-Javakheti Region of Georgia, in Akhalkalaki Municipality.

The Project consists of two separate intake structures, two buried penstocks, and two surface powerhouses with a mutual grid connection solution. The Project’s total installed capacity is 9.1MW, and its annual generation is about 49GWh. The Project will use water from both Paravani and Korkhi Rivers, and the outlet water will go back to the Paravani River upstream of the existing Paravani HPP.

The generated electricity will be connected to the national grid via a new 35kV transmission line.

Main technical specification of Akhalkalaki HPP (Akhalkalaki HPP-1 and Akhalkalaki HPP-2) (Akhlakalaki HPP1 and Akhalkalaki HPP 2): {| class="wikitable" !Akhalkalaki HPP-1 !

Akhalkalaki HPP-2
!

Connection to the Grid

 * ·   Headworks with lateral intake
 * ·   Headworks with lateral intake

·   3.31 km of GRP pipe

·   7.5 MW surface powerhouse

·   39,2 GWh annual generation
 * ·   Tyrolean type intake

·   1.95 km of GRP and Steel pipe

·   1.6 MW surface powerhouse

·   9,8 GWh annual generation
 * A mutual 35kV overhead transmission line will connect the Akhalkalaki HPP to the  national grid of Georgia through Diliska and Akhalkalaki substations
 * }

EIA Permit obtained on March 3, 2020

The construction permit obtained on July 29, 2020

Construction of the project started in October 2020

Construction of the project completed in October 2022

Akhalkalaki HPP started operation in October 2022

Environmental aspect

Two naturalized fish-passes for each headworks were designed to minimize the impact on fish population, as well as other water dependent spices. The planning of both fish-passes has relied on FAO recommendations and schemes (FISH PASSES Design, Dimensions, and Monitoring published by Food and Agriculture Organization of the United Nations (FAO) (Rome, 2002). A naturalized fish pass represents a structure, which is close to natural conditions. Akhalkalaki HPP fish-passes are duplicating characteristics of both rivers. Fish-passes, constructed within Akhalkalaki HPP projects are eco-friendly and were constructed using local raw materials, like stones and boulders, which were placed according to specifically designed schemes and ensures respective water flow speed. The necessary amount of water is supplied to the fish passes directly from the rivers. Specific calculations were made while preparing fish passes designs in order to divert necessary water flow directly to the fish passes before it goes onto the intakes of the HPP.

Social aspect

Akhalkalaki HPP was and stays intentional about the communities located in the vicinity of the project. it’s the contribution to the sustainable development of communities by financially supporting socio-economic projects is essential part of HPP business model.

During the construction period Akhalkalaki HPP has funded 10 socio-economic projects, identified in close consultation with local communities and municipal government.

The list of implemented social projects reflected in the table below: