Nowadays, energy has been depicted as a simple need in the human life. For example, to type this paper I want electricity for computer, lighting, air conditioner, etc. out of this example, it's clear that we need much energy for doing something that is easy like typing.
From paragraph above we can easily see that humans need much energy for doing their activity even it's only one activity. If we look closer into this activity, we are in need of more than just one kind of energy. This means, we need tremendous amount of energy to just execute a simple thing like making report or paper, actually when there is no energy.
From those examples, we can define that energy is a scalar physical quantity that describes the quantity of work that may be performed by the force, an attitude of objects and systems that is at the mercy of a conversion law, it is required to do any sort of activity, and even just for reading this paper we need some amount of energy. In general energy is a really important part in our life.
Forms of Energy
Energy can be divided into many kinds, according to the criteria there differs kinds of energy include kinetic, potential, thermal, gravitational, sound, light, elastic, and electromagnetic energy, there is still a different type of energy that are indirectly shown inside our lives for chemical energy
Think about any of it, if one single daily activity we need a lot energy, than we need more energy to do all of our activity in a single day. So, it's clear that the energy will soon depleted, considering that we use very much energy in a single day, or even at only one hour. By looking at this fact, the entire world surely will face a power crisis soon.
Kind of energy sources
There are several sorts of energy sources that scientist has divided energy into classified two categories by their renewability, that are not renewable energy source (hard energy technology) and renewable power source (soft energy technology). Not renewable power source are the source of energy that requires a very long time to regenerate, for example: crude oil, charcoal, and earth gas. Coal, for example, needs about more than million years to be available again, the process from the plants for fossilize, creating coal. Meanwhile renewable power source are the source of energy that always be available with a large amount and almost limitless, this power source is either too many or rapidly to regenerate, for example: solar technology, wind, hydro, and biomass. For instance, wind is a renewable energy, because wind will never depleted, no matter how much wind that you utilize, another example is solar energy, which we can use solar as a power source.
Not renewable power source can be depleted because the rate of their utilization far exceeds the pace at which they can be formed. This source of energy is the ones that we used in global scale because their energy is larger than the methods from renewable energy
The renewable solar energy is subdivided into direct and indirect types. Sunlight which used directly can produce electricity, heat or derive a chemical reaction. It is used indirectly when it drives other processes, biological - chemical or climatic - mechanical, which are used as the sources of energy.
The energy sources can be classified in a number of ways based on the nature of these transaction, as commercial and noncommercial sources of energy. All energy resources, specially the commercial ones, are natural. Coal, oil and nuclear sources constitute commercial sources, while firewood, biomass and animal dung constitute non-commercial sources. Also, the energy sources are classified predicated on animate and inanimate characteristics.
Energy sources could also be classified as exhaustible/depletable or non-depletable/renewable resources. The distinguishing feature of the exhaustible resource is the fact, it gets exhausted when used as an input of the production process, and at the same time, its undisturbed role of growth is nil. That's if the temporal services provided by confirmed stock of the exhaustible resource are finite.
Nowadays, people have a tendency to use un-renewable energy, since it is a lot better to process and simpler to use. However, we can't keep this forever, because our energy need keep increasing every once in awhile, while the way to obtain energy are slow to regenerate. The result will be quite fatal, as there will no more energy source open to be used, for instance, the oil reserves in the world would be depleted, it would be happen about 32 years from now if the utilization of oil on the continuous rate.
Energy crisis in very dangerous and must be prevented at all cost. It could create disaster; as the vitality still needed by human; and declination of world economics and quality of life. For example when there is forget about oil, then we can not use transportations, and then business will be plummeted since goods can no longer be transported. Without electricity, we almost cannot operate whatever needs electricity, like example: computer, hand phone, and other activities. Imagine the modern world, without the electricity, then our live would be miserable because almost of the invention need electricity.
To avoid this crisis, scientist is wanting to build up technology that can be used to make use of the un-renewable energy. Though it is just a little late, as the use of oil and another un-renewable energy reserve were depleted, there's a hope for this method to succeed. This breakthrough in renewable energy utilization is aiming at energy conservation. Through the use of renewable energy instead of that, we can acquire unlimited amount way to obtain energy, and without fearing that it may depleted.
Lately the essential way to obtain our energy, mainly oil and coal, are in peril. Unless we found such way using alternative energy to replace its function, we will face the energy shortage, our civilization would be crippled, so in retrospect we need to pay close attention of how we use a device with this kind of energy as its source.
In nowadays we still use the power, but the need of the isn't turning down but instead increasing, this is actually the causes of energy crisis in future, and also there are a few problems like war or terrorist attack (i. e. oil field that got burned, ), etc.
An energy crisis is any great bottleneck (or price rise) in the supply of energy resources to a economy. In popular literature though, it often refers to one of the power sources used at a certain time and place, it offers about to come for approximately 30 years later (if the rate use of energy is constant) then there would be peak oil or oil crisis age, about 40-50 years later there wouldn't be any more cheap energy or rather there wouldn't be any energy left for use.
1970s Energy Crisis - Cause: peaking of oil production in major industrial nations (Germany, U. S. , Canada, etc. ) and embargos from other producers
1973 oil crisis - Cause: an OPEC oil export embargo by lots of the major Arab oil-producing states, in response to western support of Israel during the Yom Kippur War
1979 oil crisis - Cause: the Iranian revolution
1990 spike in the price of oil - Cause: the Gulf War
The 2000-2001 California electricity crisis - Cause: failed deregulation, and business corruption.
The UK fuel protest of 2000 - Cause: Raise in the price of crude oil coupled with already relatively high taxation on road fuel in the UK.
North American natural gas crisis
Argentine energy crisis of 2004
North Korea has had energy shortages for quite some time.
Zimbabwe has experienced a shortage of energy supplies for many years due to financial mismanagement.
Political riots occurring during the 2007 Burmese anti-government protests were sparked by rising energy prices.
The crises which exist as of 2008 include:
Oil price increases since 2003 - Due to continued global increases in petroleum demand in conjunction with production stagnation, the falling value of the U. S. dollar, and an array of other secondary causes.
2008 Central Asia energy crisis: caused by abnormally cold temperatures and low water levels within an area dependent on hydroelectric power. Despite having significant hydrocarbon reserves, in February 2008 the President of Pakistan announced plans to tackle energy shortages which were reaching crisis stage. At exactly the same time the South African President was appeasing fears of an extended electricity crisis in South Africa.
South African electrical crisis: The South African crisis, which may last to 2012, lead to large price rises for platinum in February 2008 and reduced gold production.
China experienced severe energy shortages towards the end of 2005 and again in early 2008. Through the latter crisis they suffered severe harm to power networks along with diesel and coal shortages. Supplies of electricity in Guangdong province, the manufacturing hub of China, are predicted to flunk by an estimated 10 GW.
It has been predicted that in the coming years after 2009 that the uk will suffer an energy crisis because of its commitments to lessen coal fired power stations, its politician's unwillingness to create new nuclear power stations to replaces the ones that will be de-commissioned in a few years (even though they will not be running in time to stop a full blown crisis) and unreliable sources and sources that are running out of coal and oil. It is therefore predicted that the UK may have regular blackouts like South Africa.
An electricity shortage is felt most by those who rely upon electricity because of their heating, cooking and water supply. In these circumstances a sustained energy crisis may become a humanitarian crisis.
If an energy shortage is prolonged an emergency management phase is enforced by authorities. Energy audits may be conducted to monitor usage. Various curfews with the intention of increasing energy saving may be initiated to lessen consumption. To save power during the Central Asia energy crisis, authorities in Tajikistan ordered bars and cafes to use by candlelight.  Warnings issued that peak demand power supply might not be sustained.
In the worst kind of energy crisis energy rationing and fuel rationing may be incurred. Panic buying may beset outlets as knowing of shortages spread. Facilities close right down to save well on heating oil; and factories cut production and lay off workers. The risk of stagflation increases.
Alternative energy sources
Alternative energy is an umbrella term that identifies any way to obtain usable energy designed to replace fuel sources without the undesired consequences of the replaced fuels
There are several definitions of the Alternative Energy that happen to be:
Oxford Dictionary energy fuelled in ways that not consume natural resources or harm the surroundings.
Princeton WordNet energy produced from sources that not consume natural resources or harm the surroundings.
Responding to Climate Change 2007 energy derived from nontraditional sources (e. g. , compressed natural gas, solar, hydroelectric, wind).
Natural Resources Defense Council energy that's not popularly used and it is usually environmentally sound, such as solar or wind energy (instead of fossil fuels).
Materials Management Services Fuel sources that are apart from those produced from fossil fuels. Typically used interchangeably for renewable energy. Examples include: wind, solar, biomass, wave and tidal energy.
Torridge District Council Energy made from alternatives to fossil fuel. Do not need to be renewable.
The general Definition is an energy sources that can be used to replace un-renewable energy that are renewable but sometimes with side-effect, sometimes alternative energy that won't create side-effect are called Green energy.
In reaction to the petroleum crisis, the principles of green energy and sustainable living movements gain popularity. It has resulted in increasing affinity for alternate power/fuel research such as fuel cell technology, liquid nitrogen economy, hydrogen fuel, methanol, biodiesel, Karrick process, solar technology, geothermal energy, tidal energy, wave power, and wind energy, and fusion power. Thus far, only hydroelectricity and nuclear power have been significant alternatives to fossil fuel.
Hydrogen gas happens to be produced at a net energy loss from natural gas, which is also experiencing declining production in North America and elsewhere. When not produced from gas, hydrogen still needs another source of energy to make it, also at a loss during the process. It has led to hydrogen being seen as a 'carrier' of energy, like electricity, rather than a 'source'. The unproven dehydrogenating process in addition has been suggested for the use water as a power source.
Efficiency mechanisms such as Negawatt power can encourage significantly more effective use of current generating capacity. It really is a term used to spell it out the trading of increased efficiency, using consumption efficiency to increase available market supply rather than by increasing plant generation capacity. As such, it is just a demand-side as opposed to a supply-side measure.
Role of the Alternative Energy
Alternative Energy are supposed to replace fuel but there are several effects as well, which can be:
Alternative Energy help our environment by not producing harmful emissions (a few of them) because they doesn't create any pollutant
It can be accessed anywhere on the planet with the right equipment
It will generate thousands of job opportunities
It will save you a lot of budget (simply for personal use)
Consequences of using Alternative Energy
Alternative Energy, which can replace un-renewable energy still have its flaws, for example: a few of them are theoretically flaw (it was impossible to do that or there still needed some research, etc. ) or some of them are expensive, the power source needs to be produced using high technology, the other reason is basically because the foundation only produce very small amount of energy that it generally does not enough to replace the fuel source
In some country there is daylight saving which is electricity saving in summer that enough time in the some country are fast forwarded in a few country, if the time is at 12:00 pm then the time in the clock is approximately 10-11:00 am.
Some of the country doing some regulation to save the power like regular blackout, use mass amount of solar panel, using recycled items, and use of wind energy (like in Dutch)
From the written text above we can conclude that humans need to find another energy sources (Alternative Energy). It's necessary because the power will soon depleted, and without energy, you can find nothing we can do. So if we commence to search for alternate energy and do the energy saving then we can evade the worldwide energy crisis.