Solar energy transforms sunlight into electricity. It does so directly using photovoltaics, or indirectly through concentrated solar power.
The concentrated solar energy systems use lenses or solar panels that collect energy from the sun. Photovoltaic solar panels use semiconductor materials, thus converts sunlight into electricity through the photoelectric effect.

Solar Thermal Energy

Solar thermal uses the sun’s energy to generate heat or thermal energy. The energy collected by solar panels or solar collectors energy is concentrated and used to heat domestic water or industrial.

Wind Power

The wind force is transformed into electricity by wind turbines. Wind farms can have hundreds of wind turbines. The wind turns the blades on rotating turbines are connected to a generator that produces electricity.

Geothermal Energy

The energy obtained from the use of heat generated inside the earth. We see the power of this energy from volcanoes or geysers. The steam passes through a turbine connected to a generator produces electricity.

Hydropower

Take the energy of falling water from a height. This type of energy is converted into kinetic energy. The water moves rapidly through the turbines and generators are transformed into electricity.

Biomass

Through photosynthesis, plants capture energy from the sun. The energy stored in wood, fruit shells, plants, and other organic waste, when burned release stored energy. This is the energy from biomass.

Ocean Energy

The best known is that of the tides, but also working on wave energy and the temperature gradients between the bottom and ocean surface.
The tidal energy exploiting the differences in height between the average height of the seas as the relative position of the earth and the moon, sometimes these differences can potentially be high meters. It uses an alternator to generate electricity

Hydrogen

A very abundant in the universe, but is not found in its pure state, so you need to obtain other sources of energy. The hydrogen can transform into energy using technology similar to the manufacture of batteries that convert chemical energy into electricity.

Thermal Energy

The energy released through the heat, you can get from the sun, nature, friction, through the burning and so on.
Nuclear energy

Renewable energy is considered when using hydrogen instead of uranium in the nuclear fission process.

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Renewable energy is clean energy that contributes to caring for the environment. Faced with the polluting effects and depletion of fossil fuels, renewable energies are now an alternative.

What is renewable energy?

- Renewable energy comes from natural sources that are inexhaustible. Energy from sources like the sun, air, water, biomass and so on.
- Renewable energy compared to fossil fuels
- Faced with the polluting effects of fossil fuels like oil or coal, renewables are less carbon emissions, recycle and are kinder to the environment. - Fossil fuels create greenhouse gas emissions that contribute to global warming. Renewable energy and emit no greenhouse gases are essential to curb global warming and climate change.
- Renewable energy production locally, reducing transportation costs with fossil fuels. Increasing renewable energy creates jobs.
- Renewable energy for its availability will be subject to fewer fluctuations in prices, in contrast to oil or gas.
- Unlimited potential, compared with the finite resources of fossil fuels, renewable energies offer virtually unlimited potential.

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• Solar energy
• Wind power
• Hydropower
• Wave Energy
• Propulsion human
• Geothermal energy • Tidal Energy
• Energy from biomass

Due to the negative impacts that cause burning and hydropower, are not included as green energy, despite being renewable energy. The energies are producing some degree of environmental impact, such as geothermal is harmful if it involves heavy metals, wind produces visual impact. Other energies that have low environmental impact are the wave energy and the energy of ocean currents by be located in rugged coasts. Political and technological commitments are those who have given much more importance to green energy production.

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The preceding paragraphs it is clear that there are many challenges and problems from the point of view of energy and environmental. It is also obvious that if the aims to reach a level of reasonable development for the vast majority of the world, our methods, technologies and approaches will have to change radically.

The great flaw that has existed in the model of development (or growth) at the West in the twentieth century is that the emphasis has always been on the process and not on the systems. That is, we tend to think in an open process …

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CO2: Carbon dioxide. Causes the greenhouse effect. In the last 100 years have measured an increase in the concentration of CO2 in the atmosphere of just over 30%. The prevailing fear is that this greenhouse gas (along with others such as methane) is causing a significant increase in Earth’s average temperature. This will cause climate change are not well defined. The evidence of this change is seen in the decline of the glaciers and polar ice cap.

Acid Rain: Many industrial processes (burning of coal, mineral refining [especially copper]) or substances give off gases containing SO2 and SO3. These gases are precursors of acid rain. In Europe and North America, acid rain has greatly damaged large areas of forest. It also damages buildings, for example, this attack marble, limestone and other coatings. In places rain has been measured with an acidity equivalent to a lemonade! In Chile, the mining industry shows huge amounts of SO2 in the pyrometallurgy. The trend today is to move to hydrometallurgical processes where the effluent is much more controllable.

CFC: are the Chloro-Fluoro-Carbons. Initially used as refrigerants for domestic and industrial use. Subsequently used as propellants in spray cans and plastic foaming. By moving into the high atmosphere containing Chlorine destroys ozone molecules (O3) that are in the ozone layer. This allows the arrival of UV radiation intersects Earth’s surface. The effect is genetic damage to skin and exposed tissue and destruction of sensitive materials (plastics, paints). In 1990 (?) Signed the Montreal Convention limits the production and use of CFCs. There are already alternative refrigerants. The effect of damage to the ozone layer (most noticeable in the southern hemisphere) is estimated to reach its maximum early next century.

Nuclear Waste: This is an issue that directly affects us (thankfully) but must be present in our minds. The large amount of nuclear fission Nuclear power rise to a huge amount of radioactive waste. The handling, reprocessing and storage of these desdechos is an unresolved issue. Moreover, it will be increasingly present in the volume reached in the measures that scrapping old nuclear plants.

NOx: Nitrogen oxides. They are products of combustion at temperatures above about 800 ° C. Therefore they are very typical of internal combustion engines (Otto and Diesel), as well as gas turbines. NOx are precursors to ozone fomación in the lower atmosphere. If ozone is good to 60 km altitude, is bad at ground level. Mainly because it is a strong oxidant, with harmful effects on skin, mucous membranes and organs as well as paints, coatings and other inorganic materials. The Metropolitan Region has been declared an ozone saturated.

Chemical waste, are plentiful and varied. Ranging from mercury and cadmium contamination, disposal of certain processes, passes through the remains of the petrochemical industry and comes to the huge variety of groundwater contamination by pesticides, fertilizers and others.

In short, human activity has a very large relative to the environment. Today there is much talk of Sustainable Development, in fact this is a contradiction in terms. Indeed, if we consider that the development (which involves the permanent increase in use of resources) should always be on the rise, it is inevitable that within a more or less find key constraints to the development of the inevitable scarcity of resources. It is therefore essential to know the difference between growth and development. Indeed, a country can have strong growth, but increasing their level of development in much more slowly. It is also possible to have greatly increased levels of development with low growth.

Differentiating the two is important because it lets look at the evolution of a country from another perspective. It is clear that in the last decade, Chile has had enough growth, but our increased development has been much less. It is also clear that indefinite growth is not feasible because it involves having unlimited resources, which is not the case on our planet.

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However the problem does not end there. It is clear that all activities have an impact on the environment. The problem starts when this impact is negative or even irreversible. In the previous section we saw that energy availability is a constraint to development, but also the environmental impacts can also limit or condemn development.

History abounds with examples of societies that did collapse its environment and then they in turn also collapsed. A good example is what happened on Easter Island. Another example is the case plenty of companies in which the environment changed, and they in turn could not adapt. This is what happened with the Viking colonies in Greenland or (apparently) that occurred with the collapse of the Mayan empire in Mesoamerica.

Human activity in relation to aspects of energy can have the following impacts on the environment (not exhaustive):

In Extractive Activities: pollution by mining of coal, oil or otherwise. Environmental impact of dam construction.
In Generation: Emissions solid, liquid or gaseous. Thermal pollution. Nuclear contamination. Land use.
In distribution: solid or liquid spills. Environmental impact of power lines, pipelines impact.
Use: solid emissions, liquid or gaseous. Indoor contamination, thermal and acoustic pollution.

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Nuclear energy is the energy released in nuclear reactions. However, we also refer to nuclear energy as the energy use for other purposes such as obtaining power, thermal and mechanical energy from nuclear reactions.

Nuclear energy is a physical-chemical process in which energy releases large Candito (called nuclear energy). Explain the process resulted in nuclear reactions in which the nuclear energy is obtained.

We analyze the two main methods of obtaining nuclear energy:

- Nuclear fission
- Nuclear fusion

The use of nuclear energy represents both advantages and disadvantages for the development of society and the environment.

The main advantage of nuclear energy is certainly capable of producing electricity compared with other sources of energy production by either elective fossil fuels or renewable energy.

On the other hand generated a lot of very dangerous nuclear waste and difficult to manage.

More information on the advantages and disadvantages of using nuclear energy.

Experience with nuclear accidents is a major argument for opponents of nuclear energy. In the area of ??nuclear accidents is a brief overview of the nuclear accident in the history of nuclear energy.

In a nuclear process heat energy is obtained which is the energy which is used to power the generators that produce electricity in nuclear power plants. Therefore, we developed a small article on the heat energy.

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You can choose a contractor who can supply the panels and complete the solar panel installation. The contractor will be able to work around any schedule, and can work to meet deadlines for special occasions. Speak with the contractor of your choice should you have any questions or special requests. Making this switch is now easier than ever, and a complete changeover can be completed in very little time.

For those who do not understand how solar energy works, you may need to explain to them that these green energy systems can be just as powerful as standard energy. Many people still do not understand that this switch will not result in a decrease in their quality of life. Change can be hard, but when the change is beneficial, it will be much easier to adjust to. Helping others, while helping the environment, will most certainly allow you to feel great about giving the gift of alternative energy.

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The solar energy industry is really taking off in the UK where homeowners who are taking advantage of the Feed-in tariffs are choosing to install solar panels to generate electricity over all other types of  renewable energy installations. Of course, it is difficult for the average homeowner to take advantage of  hydro power unless they have a source of running water on their property. Wind power also isn’t an option for people in urban areas.

A solar panel on a rooftop is becoming a common sight. As homeowners start seeing significant savings on their electricity costs and they start getting paid for the electricity they generate, they tell their friends and solar power continues to grow in popularity. Also fueling the growth is the growing awareness of the dangers to the environment if we keep burning fossil fuels. As more people buy solar panels, the costs go down and the the technology continues to improve. It’s a win-win situation all around.

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Whether you realize it or not, every day you use so much energy, especially electricity energy. This huge energy consumption is one thing that damages the nature and you are required to fix this situation. Solar energy is the best way out when you are facing such a problem because the energy produces by solar system comes from the sun. The system of the tools you have, use the sun as their battery and they keep it until you turn the tools on and use it.

The solar panel is one example of it. By installing a solar energy system to your house, there are several benefits you may obtain such as exterior coating and interior heater, blow-in insulation, solar hot water heater and much more. Can you imagine you live in a modern house with modern tools, but still you contribute your energy as part to save more electricity usage?

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