Consider replacing or recycling older-model units to save energy, money, and to help keep these appliances out of landfills. Plant a tree – Planting a deciduous tree on the west or south side of your house can provide shade that will help keep it cool … #savingenergytips
As the reserves of nonrenewable fossil fuels like natural gas and petroleum is fast depleting, focus has been shifted to the alternative sources of energy like wind, solar and tidal energy. In the United States , fossil fuels meet 81.6% of the total energy supply, and only a 7.3 % of energy needs are catered by the alternative sources of energy. However, these energy sources are nonpolluting and non-diminishing, which makes it a dependable source of energy in the years to come. It is estimated that the fossil fuels will be largely used up within the twenty-first century, which has brought back the focus on alternative sources of energy for a sustainable global economy.
By endorsing the Kyoto protocol, which spells out an action plan to reduce fossil fuels in a phased manner, many countries in the European Union have reiterated their commitment to shift away from nuclear and fossil fuels- both detrimental to the environment. As a first step, these countries have set an initial goal of generating 12% of its total energy and 22% of its electricity from renewable sources by 2010.
Solar energy is probably the most convenient energy source, which can be utilized as heat or can be converted to electricity using photovoltaic cells. It is a cost effective and non polluting energy source that can be used for heating and lighting homes, offices and streets. Greenhouses and solariums are common examples of the direct use of solar energy,
Tidal energy is another promising source of renewable energy. Water when passed through turbines electricity can be created and it is a clean and renewable source of energy.
Wind power is one so the most ancient forms of energy harvested by man and a windmill can convert it into mechanical energy which can be converted into electricity using generators. The power generation cost in wind energy is slightly higher than hydropower and lower than nuclear power. Alternative energy sources will be the corner stones of the future economy and these cheap and eco friendly forms of energy need to be harvested fully.
Free energy is the idea that a low-cost power source can be found that requires little to no input to generate a significant amount of electricity. Such devices can be divided into two basic categories: “over-unity” devices that generate more energy than is provided in fuel to the device, and ambient energy devices that try to extract energy from the environment, such as quantum foam in the case of zero-point energy devices.
Not all “free energy” claims are necessarily bunk, and not to be confused with Renewable Energy. There certainly is cheap-ass energy to be had in the environment that may be harvested at either zero cost or sustain us for long amounts of time. Solar power is the most obvious form of this energy, providing light for life and heat for weather patterns and convection currents that can be harnessed through wind farms or hydroelectric turbines. In 2009 Nokia announced they expect to be able to gather up to 20 milliwatts of power from ambient radio sources such as broadcast TV and cellular networks, enough to slowly recharge a typical mobile phone in standby mode.This may be viewed not so much as free energy, but energy that someone else paid for.
There is a lot of energy that we can harness if we only seek to research and develop the technologies needed to do so. We can get away from the fossil fuels and the old electrical grids by turning to alternatives to these energy sources.
One of these alternative energy resources is wind power. Wind turbines continue to be developed that are progressively more energy efficient and less costly. “Wind farms” have been springing up in many nations, and they have even become more strategically placed over time so that they are not jeopardizing birds as former wind turbines did.
Another alternative energy resource is the one that is most well known: solar energy. This involves the manufacturing of solar cells which gather and focus the energy given off directly by the sun, and translate it into electricity or, in some cases, hot water. As with wind energy, solar energy creates absolutely zero pollution.
Ocean wave energy is seen by governments and investors as having enormous energy generating potential. A generator in France has been in operation for many years now and is considered to be a great success, and the Irish and Scots are running experimental facilities.
Hydroelectric power has been with us for a while and where it is set up, it is a powerful generator of electricity and cleaner than a grid. However, there are certain limitations to the availability of the right places to set up a large dam. Many run-of-the-river, or small and localized, hydroelectric generators have been set up in recent times due to this limitation.
Geothermal energy is extremely abundant, since it lies directly beneath our feet, just a few miles below the earth’s surface. This energy is produced by the heating of water through the actions of earth’s fantastically hot molten core. The water turns to steam, which can be harnessed and used to drive turbine engines which in turn generate electricity. Great amounts of research and development should be put into geothermal energy tapping.
Waste gas energies, which are essentially methane, reverse the usual energy-pollution relationship by creating energy from waste that lies in the dumps and from some air pollutants. This gas is used in fuel cells and can be used in standard gasoline generators.
Ethanol is a gasoline substitute and is created from such things as wheat, sugarcane, grapes, strawberries, corn, and even wood chips and wood cellulose. There is controversy over this fuel with regards to its ever becoming truly economical or practical except in very localized areas, but technologies for its extraction and admixturing are continuously being refined.
Biodiesel energy is created out of the oils contained in plants. So far, the commercial stores of biodiesel have been created using soybean, rapeseed, and sunflower oils. At the time of this writing, biodiesel is typically produced by entrepreneurial minded individuals or those who want to experiment with alternative energy, but commercial interest from companies is on the rise. It burns much cleaner than oil-based diesel.
Atomic energy is created in atomic energy plants using the process of nuclear fission. This energy is extremely efficient and can generate huge amounts of power. There is concern from some people about what to do with the relatively small amount of waste product atomic energy gives off, since it is radioactive and takes hundreds of years to decay into harmlessness.