Hydro resources are the most significant natural wealth of Ajara. Hydro power potential of the region is quite strong and within-year inflow distribution of rivers is very diverse (single peaked, double peaked, and with almost equal hydrographs). The index of Ajara exceeds 244 kilowatts per hour. In terms of power engineering, rivers Tchorokhi, Acharistskali, Chirukhistskali, and Kintrishi are very strong. The most abundant river among them is Chorokhi.
There are 5 hydro power plants in Ajara operating under the license of the Georgian National Commission on Energy Regulation. Their overall capacity is 22.2 thousand kilowatts/hour and annual energy generation is 28.5 million kilowatts/hour which is only 0.8% of the whole potential of Georgia.
HYDRO POWER POTENTIAL OF AJARA
According to experts’ calculations, the potential annual capacity of Ajara is 1000 megawatts, which generates 8760 million kilowatts/hour. During the last 20 years, 50-92 million kilowatts/hour was generated annually, which is only 1% of its potential.
In case above mentioned hydro power plants are built, additional 243.9 megawatts will become available and electric power of 1424.8 megawatts will be generated annually. According to expert calculations, 487.8 million USD investments are needed for these purposes.
ADJARISTSQALI GEORGIA LLC
Tata Power (India), IFC, member of the World Bank Group and Clean Energy Group (Norway) are through the Special Purpose Vehicle Adjaristsqali Georgia LLC (AGL) jointly developing the hydropower potential of the Adjaristsqali cascade in South East Georgia close to the Turkish border. It is envisaged that a total of three projects will be developed in two phases with a total installed capacity of 333 MW.
The first phase, named the Shuakhevi project, is the construction of two power stations and two dams with a total installed capacity of 183 MW and an investment amount of 397 m USD including contingencies. The second phase is the 150 MW Koromkheti project with an investment amount estimated to approximately 300 million USD.
The project will be connected to the grid through a newly constructed 140 km 220 kV transmission line which will strengthen grid access for the Ajara region and the city of Batumi where electricity consumption is growing rapidly. Most of the electricity will be exported to Turkey through a new interconnector between Georgia and Turkey.
The project is among the largest foreign direct investments in Georgia to date and will be the first project financed hydro power project in the country. It is the first green field hydro project that has qualified for CDM credits in the region. Georgia has the third largest untapped hydro potential in Europe and the project is seen as opening the sector for project finance.
“Ajar Energy 2007” Ltd
“Ajar Energy 2007” Ltd, a daughter company of EKSIM YATIRIM HOLDING, was established in Batumi in 2007.
The company plans to construct 3 hydropower stations on the river Tchorokhi (Kirnati, Khelvachauri I and Khelvachauri II HPPs). The project is expected to have an installed capacity of 105 MW. Estimated cost of project is more than 200 million USD. Construction works will start in early 2012 and will be completed by 2016. Currently, 45 people are employed at the company administration and 200 people at construction works.
WIND ENERGY RESOURCES AND POTENTIAL
Currently wind energy resources are not being used in Ajara. However utilization of wind energy resources in future will substantially contribute to power engineering balance of the region.
Working speed of wind energy in Ajara is 3 m/second. This indicator was calculated according to the index of wind energy determined on the basis of 50-years old data of meteorological stations located in the region.
ESTIMATION OF WIND ENERGY POTENTIAL
Duration of wind working speed varies between 3327 and 6243 hours. The biggest duration of wind is marked in the Black Sea basin line. In Batumi wind speed is 3m/second during 5220-6240 hours per year, which is 60-70 per cent of the year time. This gives good opportunity to set both slow active and fast active wind engines.
The maximum monthly wind speed is in winter, and minimum speed is in summer. Favorable conditions for effectively using both slow active and fast active wind engines exist in Batumi, specifically in Kakhaberi field. Working speed duration is up to 6200 hours, which is 70% of the year time, including 40% of time when the wind speed is 5m/second.
Monthly distribution of solar radiation (kw/hour/m2)