Some Alternative Energy Can Use in Indonesia

First is Solar Cell, because Indonesia is country with tropical climate have more sunlight than other land. A solar cell is a solid state device that converts the energy of sunlight directly into electricity by the photovoltaic effect. Assemblies of cells are used to make solar modules, also known as solar panels. The energy generated this from solar modules, referred to as solar power, is an example of solar energy.

Photovoltaics is the field of technology and research related to the practical application of photovoltaic cells in producing electricity from light, though it is often used specifically to refer to the generation of electricity from sunlight.

Cells are described as photovoltaic cells when the light source is not necesssarily sunlight. These are used for detecting light or other electromagnetic radiation near the visible range, for example infrared detectorsor measurement of light intensity.

Second is Windmill, because Indonesia it is a archipelagic country with a fairly high wind intensity similar to the Dutch state. A windmill is a machine which converts the energy of wind into rotational motion by means of adjustable vanes called sails. The main use is for a grinding mill powered by the wind, reducing a solid or coarse substance into pulp or minute grains, by crushing, grinding, or pressing. Windmills have also provided energy to sawmills, paper mills, hammermills, and windpumps for obtaining fresh water from underground or for drainage (especially of land below sea level).


Third is Geothermal Energy, because Indonesia have many active volcanoes. Geothermal power (from the Greek roots geo, meaning earth, and thermos, meaning heat) is energy made by heat inside the Earth's crust. This geothermal energy comes from radioactive decay of minerals, and from solar energy taken in at the surface. It has been used for bathing from Paleolithic times, but is now better known for making electricity. All over the world, geothermal energy has been used to make about 10 gigawatts of electricity in 2007, and give 0.3% of the electricity needed around the world. Buildings in Iceland are heated in this way from the country's many geothermal sites.

Source of Wikipedia