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  • Dokar A.Ş.
  • Dokar A.Ş.
  • Dokar A.Ş.
Solar Energy Print E-mail

Our company continues to work on R&D studies for solar energy which is one of the most important renewable energy resources for Turkey and is currently investing in this sector. The main field of interests are high temperature solar thermal applications and electricity production. The recent developments in this sector and the high potential of solar energy in Turkey give us an important motivation.

Although Turkey has a great potential in terms of Solar Energy, it has not been used extensively compared to the examples worldwide. Due to this high potential, it has been a driving factor for the government and the investors to invest on this energy resource.

The total amount of solar radiation reaching to the earth’s surface is 0,709 x 1014TOE/year. This value is 157 times more than the coal resources and 516 times more than the oil resources of the world. Sun is an endless source for our world.

Solar Energy Technologies
Solar energy is used in heating and cooling of buildings, cooking, hot water procurement, pool heating, drying of grains, desolination, solar ovens, photovoltaics, vehicles and electricity production.

Solar energy can be divided mainly into two groups as ; solar thermal applications and photovoltaics.

Solar Thermal Energy Systems
Solar thermal energy systems are divided into two groups as; low temperature and high temperature applications. Flat plate collectors and vacuum tube collectors are used in low temperature applications extensively. In high temperature applications, concentrating thermal systems are used. Steam and electricity are produced using these systems. The most common systems are parabolic trough collectors, parabolic dish systems, fixed focus tower systems called heliostat.

Solar Electricity Production Systems
There are two ways of producing electricity using solar energy ;

  • Steam is produced by using high temperature solar thermal systems and steam is used for producing electricity in a steam turbine.
  • Electricity can be produced by using photovoltaic panels.

The Solar Energy Potential of Turkey

Turkey is located on 36°-42° north latitude and 26°-45° east meridian on the earth surface. Turkey’s average annual solar radiation value is 1303 kWh/m²-a (3,6 kWh/m²-day), the average annual total insolation duration is 2623 hrs/a (7,2 hrs/day). The total solar energy potential of Turkey is 36,2 million TOE in which 9,8 million TOE being thermal applications.

Turkey’s Solar Energy Map [kWh/m²-a]

After making required investments, 1100 kWh/ m² value can be reached using solar energy in Turkey. The highest value of solar radiation in Turkey can be reached in Southeast Anatolia and in Mediterranean Regions. The total solar energy in Turkey is 1015 kWh in yearly basis.

Turkey’s average annual solar energy potential for different regions

Region Average Total Solar Radiation
Average Solar Radiation Duration
kWh/m²-a hr/a
Southeast Anatolia Region 1460 2993
Mediterranean Region 1390 2956
Eastern Anatolia Region 1365 2664
Central Anatolia Region 1314 2628
Agean Region 1304 2738
Marmara Region 1168 2409
Black Sea Region 1120 1971