GHG
March 31, 2011
Hydroelectricity is one of the largest sources of energy accounting for roughly 20% of the worldwide demand of electricity with around 800 GW of capacity installed.There is considerable potential still left and developing countries like India and China can be expected to install another 500 GW over the coming years.Hydroelectricity is very important as it does not lead to GHG emissions and contribute to global warming.It also does not have the drawbacks like other renewable energy forms of high costs and intermittency.The advantages of hydroelectricity are substantial enough to far outweigh any disadvantages.But like nuclear energy,hydro power has some tail risks which can lead to catastrophic damage.The costs of hydroelectricity are not a simple function of dollar costs.It should also take into account the massive displacement costs in case of massive hydro dams,the loss of ecology and potential tails risks which can lead to massive payments.
March 29, 2011
Hydroelectricity power plants are the biggest power stations in the world dwarfing the biggest nuclear and coal power projects.The world's biggest power plant is the Three Gorge Dam in China which at 22.5 GW is more than 50% larger than the 2nd biggest power station in the world.Most of the world's largest hydroelectricity plants in the world are situation in China and South America.North America also has some of the larger hydro power plants.China is the by far the world leader in hydro power plant capacity with around 200 GW which it aims to double to around 400 GW by 2020.Other major hydroelectricity countries are Canada,USA,Brazil and India.Note Hydroelectricity is responsible for producing around 20% of the world's electricity.Here are some of the major world hydroelectricity power plants .
March 29, 2011
Hydroelectric Dams have disadvantages which are quite different from those of other forms of renewable energy like solar, wind, geothermal or nuclear energy. Hydro Power in […]
March 29, 2011
Hydroelectricity is the production of electrical power through the use of the gravitational force of falling or flowing water.Hydroelectricity capacity is around 800 GW accounting for almost 20% of the global electricity capcity.China and Canada have the largest hydro capacities in the world.If you consider Hydropower as renewable energy,then Hydro is the most widely used renewable energy in the world.In fact Hydroelectricity is the 3rd biggest source of electricity in the world after coal and oil/gas.Hydroelectricity power plants can have massive capacities with the Three Gorges Dam in China being the world's largest at 22.5 GW.The Itiapu and Guri Dams in South America are the 2nd and 3rd largest with 14 GW and 10 GW capacities.China is set to double its massive hydroelectric capacity to almost 400 GW by 2020 from 20 GW currently.The advantages of Hydroelectricity are many
March 13, 2011
Wind Power has come under attack in the USA focused around the Cape Wind Project off the eastern shore.The project which was conceived over 10 years ago has not managed to still build the Wind Farm due to countless number of lawsuits filed for myriad reasons most of which are quite groundless.However some of the reasons have some solid facts behind the opposition to Wind Energy.Note Wind Energy unlike other forms of fossil fuel energy should have much less opposition however it is not so.Unlike Coal,Gas and Oil Energy it does not lead to increase in Greenhouse Gas Emissions and contribute to pollution.It does not lead to deaths of hundreds of miners each year nor has the danger of a catastrophic nuclear meltdown leading to death and disability of thousands.It also does not have the drawback of massive ocean pollution leading to an ecological disaster.However there are still protests against building of Wind Power Capacity and this article examines them in details.At the outset let me mention that advantages of Wind Power far outweighs the Disadvantages.
March 9, 2011
Biomass Energy is highly under-appreciated as a renewable source of energy despite being the most important source of energy during most of human history.Till the 19th century biomass energy used to account for 70% of the world's energy consumption and still accounts for around 10% of the world consumption.In developing countries the share of biomass energy is still quite high at 30% and it is the major source for energy for rural and backward communities.Biomass primarily consists of
March 3, 2011
Solar Energy is the only form of Energy whose costs are continuously declining compared to other forms of Energy.This is one of the biggest advantages of Solar Power over other renewable and non-renewable forms of energy.Solar Energy costs have declined by over 50% in the last 2-3 years even as Coal,Oil,Gas and other Energy costs have gone up.While Wind Energy costs have declined in the last year the overall trend is increasing as the costs of copper and steel go up.This is one of the main reasons why solar energy demand has gone up by 150% in 2010.With solar costs going down by another 10% each year over the next few years,expect Solar Energy to grow at a further fast rate in the future as well after growing at 50% CAGR over the last decade.Here are some of the advantages of Solar Energy over other non-renewable energy forms
February 15, 2011
Carbon Capture and Sequestration (CCS) has been mooted as one of the main weapons against climate change.With little alternative to Coal based power generation,CCS is touted as a temporary solution.However CCS as a global warming solution is like putting lipstick on a pig.The technology for CCS remains immature at best and even the biggest users of coal,the Chinese utilities have ruled out using CCS before 2015.Though big pilot projects have been announced in Australia,USA and UK,CCS is not a serious option as far as dealing with climate change.This however has not prevented companies from playing in this area.Toshiba is the latest company to join the CCS fray hoping to set up a 5 MW pilot plant in JV with India's biggest power utility NTPC.