There are many sources of renewable energy that can be applied for use within our infrastructure. With the latest and greatest advancements in technology, these systems are becoming more and more efficient. Wind, solar, and water are great examples of renewable sources of energy that are environmentally friendly and free.

Wind may be used as an alternative source of energy. If your house is located on at least an acre of flat land, you could efficiently generate power. The major limitations with wind are that there may be mechanical breakdowns on the turbine unit requiring repair. Additionally birds or insects my be killed by colliding with the turbine blades.

These renewable energy sources produce energy without emitting carbon into the atmosphere. They may cost money to set up however ultimately, they recoup the cost and save money in the long run.Solar, wind, and water are renewable sources of energy that are friendly to the environment. With awareness to the limits of our natural resources, practically everyone is considering renewable energy solutions. In addition to using alternative energy sources, we can use energy wisely and make sure that our houses are well insulate

Most modern nations depend on natural gas, oil and coal to supply the majority of their energy needs, but dependence on fossil fuels is a huge dilemma. Fossil fuels are considered a finite resource, meaning the world can and will run fresh out of fossil fuels. These fuels can also cause pollution of the air, soil and water. However, people are turning to renewable energy sources.Hydroelectricity is electricity generated by hydropower, i.e., the production of power through use of the gravitational force of falling or flowing water. It is the most widely used form of renewable energy. Once a hydroelectric complex is constructed, the project produces no direct waste.

Wave power is the transport of energy by ocean surface waves, and the capture of that energy to do useful work " for example for electricity generation, water desalination, or the pumping of water (into reservoirs). Wave energy can be difficult to harness due to the unpredictability of the ocean and wave direction. Wave farms have been created and are in use in Europe, using floating Pelamis Wave Energy converters.

The first of the top three renewable energy sources is solar energy, and is probably the best known method. The sun is our most powerful, natural energy source. Solar energy which is sunlight, can be implemented for light, heat, cooling homes, electricity, heating water, and much more industrial processes. Most renewable energy forms are derived either indirectly or directly from the sun. For instance, the heat from sun makes the wind blow. This in turn contributes to growth of plants and trees used for biomass energy. This plays an important role in the evaporation and precipitation cycle that empowers hydropower.

Geothermal energy is a very powerful and efficient way to extract a renewable energy from the earth through natural processes. This can be performed on a small scale to provide heat for a residential unit (a geothermal heat pump), or on a very large scale for energy production through a geothermal power plant.

Compressed Natural Gas (CNG) is a fossil fuel substitute for gasoline, diesel, or propane fuel. Although its combustion does produce greenhouse gases, it is a more environmentally clean alternative to those fuels, and it is much safer than other fuels in the event of a spill (natural gas is lighter than air, and disperses quickly when released).