Through out the world most of the house hold receive and use energy that comes from coal , petroleum etc. that are non- renewable sources of energy. Though it might be more covinient to use and is a cheap source of energy for some counntries to fulfill energy needs of its people it comes down heavily on the environment. However, the good is that more greeener sources are easily and affordably available to us for use. They are equally reliable and when they are combined with energy – efficient practices , it is not that expensive also.
SOURCES OF ENERGY
In india 54.5 per cent of energy is produced by burning coal and next to it is crude oil which is 29.9 oer cent. Eenergy is wasted in conversion of heat energy to electricity and the process generates huge quantities of carbon dioxide and other green house gases , which in return contribute to global warming.
Hydro- electrcity produced in India makes up only 5.5 per cent of the total energy produced in this country , but in countries like New Zealand and Tasmania hydro – electricity contributes to 60 – 70 per cent of the total house hold electricity. It is a renewable form of energy , but construction of dams and powerstations can result in production of large quantities of greenhouse gases and damage the environment.
Natural gas, one of the most easily and readily available alternative to conventional electricity, is also on – renewable in nature, but is much cleaner, producing only one – third of the green house gases produced by other conventional sources.
Liquified petroleum gas or LPG is available to people where piped natural gas is not available for them. Though it is a cheap source of energy still costs much primiraly due to two reasons – 1) storage 2) transportration. It can cost about tree times higher than natural gas.
Wood provides energy to many homes. Although it produces some pollutants, wood can be renewable and generates comparatively low green house gases.
Renewable energy sources, such as solar, wind, biomass, and geothermal energy, produces only a tiny portion of the energy we consume. However, developing tropical countries like India can make most use of it in a very effective as well as efficient way.
Switching an average home to green energy cuts down greenhouse emisssions by as much as taking three cars off the road per year. In most of the areas, government rebates are available to householders who install renewable energy systems . If you want to be self sufficient then consider setting up renewable energy systems in your house . One of the most effective and easy way to do this is by installing solar panels on the roof of your house. These panels have photovoltaic cells that convert sunlight into electricity and store it in batteries for subsequent use . In remote areas , wind generators and micro -hydro generators can be set up to meet the energy reqirements of the people of that place .
GOING THE GREEN WAY
Find out from a local energy distributor or retailer about renewable enrgy options that are available to you. If not then contact the government agencies to know about the accredited suppliers in your locality or that area. Now , figure out how much green enrgy are you planning to purchase. In some cases, you are also given the choice of source of renewable energy you want to use. Check out the approximate cost of installation . Lastly, monitor your energy use to make sure you are keeping consumption and greenhouse gases to a minimum. Most energy suppliers provide information regarding the pattern of usage of energy and greenhouse gases emission in the bill output . Change to energy – efficient products to cut household greenhouse gas emissions to half.
COMPARISON OF ENERGY RESOURCES
LPG – It is supplied in cylinders and is widely available. It has low greenhouse gases emission. However, its transportation requires extra resources that increase its production cost thereby making g it an expensive source of energy.
BIOMASS – n this the plant matter is burnt to support electricity generators. It recycles agricultural wastes . Burning of fuel can produce some low-level pollutants . This form of energy has potential to become renewable source of energy.
SOLAR ENERGY – In this form of energy solar energy is trapped in panels and there it is converted to electricity. This source of enrgy is abundant in nature and is free. The best part of it is , it is a renewable source of energy and has no greeenhouse emissions. So, it is 100 per cent eco – friendly. The only drawback of this is that the installation cost is very high.
GEOTHERMAL – It is derived from streams, heat, and hot water from the interiors of the earth and is used to operate generators. It is higly efficient and is inexpesive once it is setup. But it is limited to only several specific geologiccal locations.
NATURAL GAS – Natural gas is transported to the consumers using a pipe line and is burnt on site. It has good efficiency and produces much less amount of greenhouse gases than that produced by coal.
WIND – Wind energy is produced by turning turbines using the wind. It is free of cost and is a clean source of energy as there is zero emission of greenhouse gases. However, the setup cost is very high and might cause injury to birds.
COAL ELECTRICITY – In this burning coal is heated that in turn drives turbines therby producing electricity . It is a readily available source of energy . It is non renewable in nature , inefficient and requires use of large quantities of water and produces large number of green house gases.
HYDRO ELECTRICITY – It is generated by running water that drives turbines to produce electricity . It is a renewable source of energy and is easily available at many places , espcially near water falls . The major drawback of this source of energy is that its setup produces greenhouse enission and damages the environment.
WAVE / TIDAL ENERGY – Waves power the turbines that produces electricity. This source is easy to find and is renewable in nature. It can be found close to cities also. But, it is difficult and expensive to harness it efficiently.