Water Energy

Water energy (hydropower) is the most important renewable energy source. Water as an energy source is considered to be renewable because of the water cycle in nature. Radiation of the sun causes the evaporation of water from the oceans and rivers and its transformation into water vapor. When water vapor reaches the colder air in the atmosphere, it condenses and creates clouds, thus creating rain or snow and renewing the water in the oceans and rivers. Gravity moves the water from a high pitch to low. The power of flowing water can be very large.

Introduction to the Renewable Energy Resources

Non-renewable energy sources

Thermal and electrical energy are the most dominant forms of energy which enable the functioning of modern civilization. Using advanced technological processes by applying certain converter these types of energy can be converted into other forms of energy. It is important to state that heat and electricity are today dominantly derived from non-renewable sources of energy. Under the term of non-renewable energy sources one considers all potential carriers of some form of energy that were once created, but cannot be restored at the moment. Such energy sources are fossil fuels (oil with its derivate, coal, natural gas) and nuclear fuels (fission).