Non-renewable energy sources are not effective, and cost far more than they offer in benefits. Fossil fuels formation is a very long process that occurs over thousands of years, and the reserves left in the earth are running out. Developing countries, including China and India, are requiring more energy and oil, and this means what fossil fuel reserves are left will soon be gone. Because of the time fossil fuel formation takes in the earth, it can not be renewed for thousands of years
Anyone who knows about the coal mining industry also knows why coal is also not the answer to future energy needs. Just like crude oil and natural gas, coal is a fossil fuel which is not renewable and harms the environment significantly. Mining for coal has changed a lot over the years, but recovering this resource still does great damage to the earth through mining methods, as well as greenhouse emissions. Coal is not unlimited, and eventually this fossil fuel will also run out as well. Since coal is a nonrenewable energy source, it is not a viable solution to any future energy crisis
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.
Photovoltaic (PV) Solar power is harnessing the suns energy to produce electricity. One of the fastest growing energy sources, new technologies are developing at a rapid pace. Solar cells are becoming more efficient, transportable and even flexible, allowing for easy installation. PV has mainly been used to power small and medium-sized applications, from the calculator powered by a single solar cell to off-grid homes powered by a photovoltaic array.
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).
Originally posted 2009-05-05 06:32:08.