The availability of alternative energy comes in many different forms. One of these is solar power: Solar power is driven by photovoltaic cells, and these are progressively getting less expensive and more advanced.
There aren’t any areas where solar power cannot be utilised including: generating electricity and hot water plus of course it has the added benefit of being pollution free. However, much more work still needs to be done in order for us to economically harness the sun’s energy. The one major problem is storing the power for use when the sun is not as strong, on overcast days and when night falls.
As of the moment, the most-invested-in alternative energy source favored by many private investors as well as the government is the wind energy. Huge double and triple bladed windmills can be seen around the world, working constantly, day and night to produce large amounts of electricity. Of course, there is nothing new about the concept of a windmill for harnessing energy.
The windmills used today are massive compared to those used in the past and much more ‘high-tech’ and often referred to as ‘wind-turbines’. The only downside to this form of power is when the wind isn’t blowing, you cannot produce power. Of course, the power we need can come from other sources when this happens so currently we cannot rely completely on wind power even if we had sufficient farms to cater for our needs.
A massive quantity of power can be obtained from another source of alternative energy which is the hydroelectric energy. All that is required is a large body of water and gravity – this fall of water from a great height is able to turn large turbines which generate electrical power. As water is everywhere it has not generally been a problem finding locations where it can be employed.
The main problem with this process is the initial financial cost and the size of these dams means it is a lengthy project which does not come without it’s own issues. Building of dams is often the most common and effective means of controlling the flow of water to sufficiently provide the source in generating the needed power.
Conservationists are starting to be worried about operating a dam as it not only requires a lot of labour building it to store and control water’s potential and kinetic energy but it can also be risky and complicated. To produce power this way does not always require a dam, especially if it is only a small community that is being serviced.
There are other options that you may use especially if it is just to supply neighbourhoods or an individual office or home such as small run-of-river hydroelectric converters.
However, the most underused and under-rated form of energy is geo-thermal: this is the heat which is generated inside the planet beneath the crust. The earth’s inner molten core is the one responsible for transferring the heat into the water.
Power plants use a number of ways to draw this water to the surface and harness it into ‘free’ energy. When hot water is drawn up, it simply means that there is the need to gather steam. The Geysers is an example of a dry stream plant located in the region of about 100 miles north of San Francisco and perhaps the best-known of all geothermal power fields.
Source: solar energy