Tag Archive | renewable energy examples

Why is renewable energy important for the future?

There are many different reasons why renewable energy is extremely important for the future of our society and throughout this article I will mention the ones that I find to be most important.

Positive environmental impact is certainly one of the top reasons. Fossil fuels when burn create harmful greenhouse gas emissions that have significantly contributed to global warming phenomenon. Using renewable energy instead of fossil fuels we would significantly decrease the total amount of greenhouse gas emissions which would help prevent stronger climate change impact.

 

Boost to economy in form of new jobs. The number of people employed within the renewable energy industry continues to grow, and this gives many countries an excellent option to boost their economies in this post-recession period.

Less foreign oil import. The global oil market has become extremely volatile and our dependence on oil continues to grow. With more emphasis on renewable energy and using domestic renewable energy sources instead of importing foreign oil we would drastically improve our energy security and energy independence.

The variety of options. Renewable energy offers variety of different options to choose from as countries can choose between sun, wind, biomass, geothermal energy, water resources, etc.

The prominent position in global politics. The global clean energy race is very important and winners in this race will experience many political as well as economic benefits in years to come.

Excellent potential of renewable energy resources. Our sun for instance has almost unlimited potential. Wind, geothermal, biomass – all of these sources have excellent potential to satisfy our energy needs.

Renewable energy can help in electrification of many rural areas in developing world. In many rural areas renewable energy is cheaper energy option to satisfy energy needs compared to traditional energy solutions.

Renewable energy can also help improve political ties between countries by sharing technological know-how. Some large renewable energy projects could even be joined works of two or more different countries.

By Ned Haluzan

Exploiting renewable energy while allowing for protecting biodiversity

Deployment of renewable energy is expanding all over the world. There is high competition between alternative land uses, and conflicts over limited land are likely to emerge between biodiversity conservation and expanded deployment of renewable energy.

Dr Andrea Santangeli in the University of Helsinki, Finland, and his colleagues in the UK have explored global expansion of land use for renewable energies versus biodiversity protection. They discovered that the conflicts and opportunities largely depend on the type of energy at stake, with bioenergy strongly conflicting with biodiversity protection while generating only limited power at a global level.

Conversely, solar energy and, to a lower degree, wind energy, may provide relatively large power supplies with minimal impacts on biodiversity.

“We found that using a very limited amount of land for generating energy from the sun can yield large amounts of power without impacting the best areas for biodiversity protection. However, this result only holds when restrictions on energy storage and transport are largely ignored, which is unrealistic in the short term. Indeed, these findings highlight a major opportunity when political will and improved technologies make it possible to harvest renewable energy without such restrictions,” says Andrea Santangeli.

Santangeli and colleagues also highlight that in the near future renewable energy most likely will not be able to make a very large contribution towards our total global energy consumption. So, other forms of energy still need to be considered.


Story Source:

Materials provided by University of Helsinki. Note: Content may be edited for style and length.


Journal Reference:

  1. Andrea Santangeli, Tuuli Toivonen, Federico Montesino Pouzols, Mark Pogson, Astley Hastings, Pete Smith, Atte Moilanen. Global change synergies and trade-offs between renewable energy and biodiversity. GCB Bioenergy, 2015; DOI: 10.1111/gcbb.12299

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The Relevance Of Alternative Energy Sources In The Modern World

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.

Renewable Energy Is The Future For The Earth To Survive

After heating and cooling, water heating is typically the largest energy user in the home because it is necessary for so many domestic activities. Whether you are replacing a worn-out existing water heater or looking for the best model for a new house you are building, it pays to choose carefull

Here you can learn how to use the energy in your home more efficiently. You can also learn how to use renewable energy to provide your home with electricity, heating, cooling, and water heating.
Alternative energy from sources that do not produce harmful emissions. For example, unconventional power from the sun, wind or running water. In most boilers, wood, coal, oil or natural gas is burned in a firebox to make heat. Running through the fire box and above that hot fire are a series of pipes with water running through them. The heat energy is conducted into the metal pipes, heating the water in the pipes until it boils into steam. Water boils into steam at 212 degrees Fahrenheit or 100 degrees Celsius. Why waste this energy use it, don’t loose it.

If you currently have an electric water heater and natural gas is available in your area, a switch might save you a lot of money. Even though electric models have a higher energy factor than fuel-burning models, electric resistance is a very expensive way to generate heat. It does not have great environmental benefits either, since electricity is only as clean and efficient as the fuel (often coal) that generates it. Before you rule out electricity, though, check with your utility company. It may offer special off-peak rates or options for purchasing renewable power that may make electricity a more attractive option for you.

A renewable resource is fairly easy to replace. Renewable energy resources include wood, wind, sunshine, geothermal energy, biomass, and water stored behind dams in lakes and reservoirs. Electricity can be produced using several kinds of renewable resources.
From space, oceans look much different than adjacent land areas – they often appear darker, suggesting that they should be absorbing far more sunlight. But unlike dry land, water absorbs energy in a dynamic fashion. Some of the solar energy contacting the surface may be carried away by currents, some may go into producing water vapor, and some may penetrate the surface and be mixed meters deep into the water column. These factors combine to make the influence of the ocean surface an extremely complex and difficult phenomenon to predict.

Some countries give tax credits for the use of alternative renewable energy. In todays world we as a population should endevour to protect our environment and the use of alternative and renewable energy is a must do if we are to survive on this planet. For us not to consider the impacts of our enegy use would severely impact on the lives of those well into the future. So look after mother earth as she needs to be looked after and by using renewable resources we can limit our impact.