DISADVANTAGES OF OTHER ENERGY SOURCES


HYDROGEN:
  • It is very expensive.
  • It costs more to produce hydrogen than is earned by using hydrogen in fuel cells.
  • Hydrogen is difficult to store and distribute.
  • Hydrogen is made out of "re-forming" natural gas by using electricity to split water into its components of oxygen and hydrogen.
NATURAL GAS:
  • Natural gas is a highly flammable substance
  • It is a renewable energy and will eventually run out if our current usage levels continue.
  • It's colorless, odorless, and tasteless which makes it detection of its leak very difficult.

SOLAR:
  • Costs are VERY high for equipment
  • Requires large area for it to be efficient
  • During night, expensive equipment is useless
  • Needs to be in a low polluted area for best results
BIOMASS:
  • produces greenhouse gases:
  • not available all year:
  • It takes more energy:
NUCLEAR:
  • Nuclear Energy costs lots of money, up to $14 billion dollars already, and the industry hasn't even really taken off.
  • Nuclear energy gives off lots of pollution as well.
  • Also, it requires hundreds of thousands of gallons of water to keep cool, and the water is slightly irradiated when it is put back.
  • Nuclear power plants are very expensive to build.
  • The disadvantages of nuclear power include: the storage and management of dangerous high level radioactive waste; the possibility of proliferation of nuclear materials and potential terrorist applications; the high cost of building nuclear facilities and the small possibility of accidents.
    Of these, the most urgent is that of nuclear waste disposal. High-level nuclear waste can last for thousands of years before being safe again, so this is a major hurdle which must be overcome before nuclear power can expand.
    There are claims that nuclear power is simply not economical and that given the amount of time it takes to build nuclear facilities, we need another solution for the short term.
    http://www.howtopowertheworld.com/disadvantages-of-nuclear-power.shtml



Coal:
  • Disadvantages of Coal Energy- Biggest Contributor to Global Warming is Coal’s Biggest Drawback

9 Apr, 2011Coal

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Coal is the Biggest Contributor to Global Warming generating billions of tons of carbon dioxide during combustion.Coal is one of the most abundant fossil fuels available on earth and it is expected that Coal will last another 200 years.The mass usage of Coal and its deleterious effect on the environment makes Coal a controversial choice of Energy.Coal is responsible for 25% of Human Energy Consumption and is the largest producer of Electricity in the world.Countries like India and China are developing Coal Power at an astounding rate which means that Coal usage will increase its share.This has major implications in the fight against Climate Change as increasing Carbon Emissions will lead to further Global Warming.Coal due to is advantages of cheapness and abundance is showing no signs of slowing down despite the major drawbacks.While Thermal Power Plants in the Developed World has slowed down,Coal Mining has seen a sharp growth driven by the massive growing demand from Coal and Steel Plants in India and China.However Coal has huge drawbacks which should make policymakers reconsider using Coal in their Energy Strategies.The social costs of coal which are not reflected in the electricity bills have to be paid by the society.These costs have to be accounted for by the government while thinking of Coal.Here are the Major Disadvantages of Coal Energy.http://www.greenworldinvestor.com/2011/04/09/disadvantages-of-coal-energy-biggest-contributor-to-global-warming-is-coals-biggest-drawback

TIDAL-
  • There are limited locations.

OIL-
  • Non-renewable resource that is depleting fast
  • When oil is burned it gives off Carbon Dioxide, a powerful greenhouse gas that can cause global warming.
  • It leaves behind harmful by products which cause a lot of pollution
  • Oil spills and the evaporation fumes of the oil cause water and air pollution
  • Mining cause catastrophic damage to the environment
  • Oil prices are rising, because oil is very difficult to recycle
  • the cost of extracting oil from the ground is rising
  • Transporting oil can cause spills which can severely damage marine ecosystems
  • Many of the countries where oil is found are politically unstable. 70% of the world's oil is found in the middle east, which can cause oil dependencies in these countries
Many products obtained from oil are beneficial, but are highly toxic.

GEOTHERMAL-
Geothermal energy has high installation costs and isn't a global wide-spread source of energy. Many geothermal sites contain poisonous and harmful gases that can make their way around the world harming the innocent.
http://www.conserve-energy-future.com/Advantages_Disadvantages_GeothermalEnergy.php