Our country, Korea, has specified energy sources other than oil, coal, nuclear power and natural gas and sorted them into 11 fields to be used in the future (Alternative Energy Development & Promotion of Use and Distribution Act).
They have been classified as follows;
* 8 fields for renewable energy sources
- Solar energy, Photovoltaic power, Biomass, Wind power, Small hydro power,
Geothermal energy, Ocean energy and Waste energy.
* 3 fields for new energy sources
- Fuel cell, Coal liquefaction/gasification, Hydrogen energy.
Alternative energy sources that have been put to practical use as a result of extensive technology development carried out by developed countries today are mostly solar and wind energy. The development of other alternative energy sources such as biomass, geothermal energy, wave energy and tide energy has been actively carried out.