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About Solar Energy

Definitions and Characteristics


The available solar energy that reaches the surface has low density (less than 1,100w/m²), It exists only during daytime and changes greatly with time. The solar radiation that reaches the surface is being shunt by each wavelength, ranging the same as the following figure, and the wavelength that we use mainly for thermal energy is the visible light.
Solar energy by absorbing radiation from the sun into heat energy is converted and saved and if necessary, direct use, or how to use and copy the beam density and thermal power to the condensing unit is a way to generate electricity through. In most cases the use of solar energy is converted into thermal energy.


Solar energy is clean and renewable energy sources by using the sun's light energy is utilized in real-life human and solar photovoltaic energy technologies that utilize solar thermal technology uses are largely classified. Solar energy technology, solar photovoltaic energy into electrical energy that has developed technology that converts solar technology is referred to as solar technology in general is said to be.

Introduction to research methods resources investigation

1. Construction of the network of 16 measurement points nationwide (Data in 1982 ~ )

  • Installation and operation of horizontal/direct pyrheliometer, solar tracking device, data acquisition system and related accessories
  • Construction of the computer communication network to receive and remotely control the measured data through the communication line
  • Saving of data into database format and data exchange with various analysis programs through the development of DPP program (Data Retrieval and Process Program) for data processing

2. Development of the technology to set up, analyze and apply the domestic typical solar radiation

3. Quality evaluation of the measured data (Data Quality Management System)

4. Provision of standards for the optimized design of solar energy system

5. Analysis of solar energy availability in Korea using satellite

6. Evaluation of atmosphere environment of the major urban areas in Korea

Domestic Status

Technology Development Status

Specific plans (Promotion of strategic technology development)

Field Key areas General areas in the short-term Future areas in the long-term
Solar thermal Development of low temperature solar thermal plant Commercialization of solar power technology for medium-large scale High temperature solar furnace technology Solar Hydrogen Production Technology
Photovoltaic Silicon solar cell Thin-film solar cell (a-Si, CIGS) 3rd generation Nano solar cell(Fuel-sensitized, Quantum dot solar cell)

Korea Energy Management Corporation - New & Renewable Energy 2010

  • Key areas : Priority areas of considering urgency, technology influence, marketability, need for budget execution
  • General areas in the short-term : Predictable main technical areas after five to ten years
  • Future areas in the long-term : Blue ocean areas in the long-term
- Promoting the development of technologies using localized core equipment for module manufacture and next-generation thin film solar cell since 2008

Plans for future technology development

  • Implementing the strategic development of technology that can reduce the manufacturing costs of crystalline silicon and next-generation thin film solar cell that can reduce the manufacturing costs of solar cell
  • Developing a small solar cooling system that can effectively use both the single or double composition solar heat and auxiliary heat source in the summer which requires less heat load compared to other seasons

Renewable energy supply portion of the total electricity production by the 2nd general plan

(Unit: MWh)

Field 2008 2010 2015 2020 2030
Solar - - 15,330 391,890 2,046,139
Photovoltaic 202,443 476,706 961,773 1,424,471 1,971,513

Korea Energy Management Corporation - New & Renewable Energy 2010

The amounts of potential

Solar Energy Potential in South Korea

(Unit: thousand TOE)

Source Occurring Potential Achievable Potential Technical Potential Note
Solar thermal 11,159,495 483,910 870,977 Considenation of Solar thermal system
change efficiency(25%)
Photoboltaic 585,315 Considenation of Photovoltaic system
change efficiency(15%)

Korea Energy Management Corporation - New & Renewable Energy 2010