19. 10.
For billions of year since beginning of universe and later formation of our solar system the sun (Stars) has been the prime source of energy. In other words there are no other source of energy which is inexhaustible and available free.
Solar energy is the radiant light and heat from the Sun that has been harnessed by humans since ancient times using a range of ever-evolving technologies. Solar radiation along with secondary solar resources such as wind and wave power, hydroelectricity and biomass account for most of the available renewable energy on Earth. Only a minuscule fraction of the available solar energy is used.
Whatever fuel we are using in today’s developed world is only a byproducts of solar energy, be it coal, oil, hydro or any other from or energy. Since it is only the sun which has provided the initial energy and power in the process of transformation and storage or energy in different forms. Can you imagine a day without sun?
Today we are depending on other sources of energy like oil, coal, gas simply because we humans have always been looking for a easy way of life. As a result of thoughtless use of these polluting energy sources which emit harmful green house gases we have now endangered the existence of life on Earth. And if we do not take proper measures now it may be too late and we would be giving our new generation the worst place in the universe.
Time has come and we need to change our thinking for betterment of our coming generations. At least we can make our planet a clean place by using Renewable Energy sources.
The Solar Energy intercepted by earth in one day is enough to power whole world for couple of years. But still we do not have any technology which can harvest this huge amount of energy and store it for future use. In fact we even do not need to store this energy if the whole world is interconnected with power transmission lines then half of the world which lies facing the sun in a given time can power rest of the world. This may be possible in future but right now it is next to impossible. May be some day it happens!
Here is what we can do right now to cut down emission of green house gases.
- Using Solar Power systems (PV Panels)to generate Electricity.
- Solar Water Heaters can be used to get hot water for both domestic and industrialuse.
- Solar thermal energy can be used for cooking using solar cookers. It can also be used for power generation.
- Proper planning while building construction can ensure maximum day light isavailable so that artificial lighting use is minimized.
- Selective shading and proper thermal mass utilization can result in well lit space at
comfortable temperature.
1. 10.
Renewable Energy Technologies (Wind and Solar) have an important role to play in World’s Energy sector. With right approach the Renewable Energy Industry can become a major player in world’s energy sector, and meet the energy needs of a significant proportion of population by using Wind and Solar Systems.
Renewable energy technologies can play a major role in national developmentin terms of job creation and income generation as well as providing and environmentally sound energy service. Renewable energy technologies can play complementary roles to large scale conventional energy technologies.
Renewable energy can be important alternatives for power generation in many drought prone countries when conventional electricity sector (mainly Hydro based) experiences deficits.
Other factor is due to continous use of fossil fuels we are facing threath in form of global warming and if the trend continues the outcome may be devastating destroying the environ ment of our mother Earth. Whole world acknowledges this fact and is taking action to reduce dependancy on fossil fuel.
