Renewable energy - clean but not always affordable

摘要

The increase in the amount of carbon dioxide (CO_2) in the atmopshere is responsible for problems such as global warming up, rise in the level of the sea, wind pattern changes, etc. It is high time that all countries put the required effort to reducethe CO_2 emission to save the planet. One method to reduce the emission of CO_2 is to maximize the use of renewable energy such as tidal, wind, hydro and solar energy. In tropical countries, solar energy can contribute a lot to the development of the country as well as decreasing the dependency on imported fuel such as petroleum and natural gas. But the equipment associated with renewable sources of energy is quite expensive as compared to equipment used with other fuels. This high initial cost tend toinhibit investment in renewable energy sources.