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#1 | |
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Registered User
Join Date: Mar 2008
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Renewable Energy For India
I am starting this thread on Renewable Energy for India. There are pros and cons for topic.
To start of I am pro-Renewable Energy for India. This is major strategic initiative to kick the habit from Coal/Oil based products. Coal and Oil based products are major polluters contributing to tonnes of CO2 emission per year. India is currently producing around 70% of its energy from Coal based plants. The current initiatives in renewable energy are a) Wind b) Jatropha biodiesel c) Solar Energy d) Ocean Tidal wave energy. Wind is a well established technology and depends on the wind map of the country. The current estimates for Wind are around 60,000 MW on land. Offshore there is more potential. Solar Energy is promising since India gets a lot of sunshine throughout the year. Some experts estimate that the Solar Energy Shone on India is sufficient to power its energy needs. The major stumbling blocks are solar to electric conversion are costly (though recent advances in California put it a grid parity cost, i.e. cost have come down to the same level as other conventional energy on a per unit basis). One promising use for solar is home water heaters. This is not very expensive and people with independent homes can avail of this technology today. Lots of home have solar water heaters on their rooftops, the sun heating small tubes of water in a glass planel and hot water collected in an insulated tank. For those days that do not have sunlight an in-line heater element heats up water. So on balance, for a majority of the time people can enjoy hot water. Commercial establishments like laundries and hotels can make use of solar water heaters. Coming to the issue of electricity from Solar there are various other alternatives that produce electricity. One instance in Seville, Spain uses reflecting mirrors to heat a liquid that runs an engine to produce electricity. This technology is being pursued by PG&E in Southern California for a 500 MW + plant. I believe that the best way to mitigate energy use is to have individual homes with Solar energy. During day time they can produce electricity returned to the grid and during night they take back from the grid. The savings could be substantial and conventional systems can augment deficit power. India is also looking to increase its Nuclear Energy program. Here is con argument from dis.agree Quote:
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#2 |
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unBANNED
Join Date: Jul 2004
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mine the moon !
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#3 |
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Jana Gana Mana
Join Date: Feb 2009
Location: Portland,OR; Hyderabad.
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solar is perfect for india because of the heat, but the thing is to implement and make solar panels are very expensive....
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#4 |
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Renewable energy plans are gaining steam very rapidly. Make no mistake that nations that race towards a sustainable future will be the leaders in the world. Towards this goal India must be cognizant of its needs and also of its growth potential. Very soon all nations will get together and put meaningful caps on C02 emission. The biggest culprits happen to be coal based plants. The solutions are daunting for the moment because the problems seems insurmountable. Sustained 24x7 power is cheaply produced by coal plants. But the penalties are mounting.
Countries like the US and even China to some extent are moving very aggressively to meet the challenge. Obama has given a goal of 25% renewable energy by 2025 for the US. The US can meet this goal by Wind alone, its wind map has the potential of producing 3x the current total power of the US. Wind energy in the US is the fastest growing industry and now is the largest the world. The wind energy industry installed over 2,800 megawatts (MW) of new generating capacity in the first quarter of 2009 and the U.S. is now 28,206 MW, enough to serve over 8 million homes. The biggest problem the US faces is that there is no grid infra in remote places like Montana to evacuate Wind power. India needs to evolve a roadmap for aggressive renewable energy usage. I see only Solar in its future. The only solutions is distributed power generation as opposed to central systems. Each household and industry needs its own power supply based on Solar. Low wattage systems (including LED bulbs) which reduces the per person consumption of power is the only way forward. I see this as boost for innovation in all kinds of industry. Every appliance can be rethought along the lines of a Tata Nano. Refrigeration, fans, lights, electrical grinders/household appliances all of them. Once this figure is reduced to a bare minimum then the problems don't look too insurmountable. |
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#5 |
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The best and most effective way to adopt renewable energy is to solve day to day problems of the ordinary man/family especially for the Indian Context.
Rural India could really benefit from Solar Energy. Simple things that can enable rural farmers/family 1) Cooking with Solar Appliances 2) Rudimentary Lighting in Villages 3) Operation of the irrigation water pump - currently some states provide this as freebie. My brother on a trekking trip in the Himalayas told me how an enterprising dweller in the area provided chai (tea) for travelers. He used a rudimentary solar reflector to heat up water piping hot to make tea. Of course it takes a while, but the volumes needed are not much. Cooking with Solar has been demonstrated in Rajastan wherein a community kitchen cooks large quantities of food using solar energy. 2) is easily available. street lights are now solar panels in some highways. If the same tech can be provided to villages that would be great. I know this is possible, since I have solar garden lights, during daytime they store the energy and operate for about 4-6 hrs in the night. All unattended with little to no maintenance, invariably covered with dust and water from the sprinkler. 3) is highly possible since these are low hp motors pumping water from some irrigation canal or well. During day time they can operate flawlessly. No need for govt to subsidize power, instead they can give farmers loans/grants for installing solar water pumps. I am sure there are more such applications. Feel free to provide more examples. |
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#6 | |
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Registered User
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It’s a challenge: Farooq Abdullah
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#7 | |
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Registered User
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Tata Power to generate 5 MW from geothermal, solar plants in Gujarat
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#8 | |
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hazaron ke anna
Join Date: May 2008
Posts: 9,999
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Green energy gets a leg up
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#9 | |
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hazaron ke anna
Join Date: May 2008
Posts: 9,999
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Buy at least 5% renewable energy: CERC orders state utilities
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#10 | ||
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hazaron ke anna
Join Date: May 2008
Posts: 9,999
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Karnataka Renewable Energy policy draft delayed
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Davanagere, the future capital of Karnataka ... Builders of Mangaluru & Udupi... Green Building... Energy... Environment... Wildlife & Marinelife... Last edited by Krishnamoorthy K; June 20th, 2009 at 04:02 PM. |
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#11 | |
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hazaron ke anna
Join Date: May 2008
Posts: 9,999
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Wind energy industry blows strong
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#12 | |
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hazaron ke anna
Join Date: May 2008
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Sugar mills generate as much 'green' energy as windmills
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#13 | ||
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One of the simple ways of tapping solar happens to be solar - thermal power plants. PG&E in California has signed up with BrightSource Energy for a 500 MW solar-thermal plant. Fields of mirrors at the plant will focus sunlight on centralized towers, boiling water within the towers, creating steam and turning turbines.
Closer to home: Quote:
I think a better idea would be smaller plants e.g. Quote:
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#14 | |
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Registered User
Join Date: Dec 2005
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I am really fascinated by biomass power generation because of the easy availability of biomass (waste wood / rice husk / corn cobs, stover & stalk / sugarcane leaves, bagasse etc.) across the country. I believe this holds a lot of promise for India. The economics of this mode of RE power generation are as follows: Capital cost = Rs 6 lakhs for a 10KW unit Per unit cost of generation ~ Rs 1.3 to 1.4 per unit as against ~ Rs 5 /unit from the grid. In fact I am currently looking into combining biomass power generation with microenterprise development (through an organization in the US that I am a founder member of) to make rural communities in India self-sufficient in power. The idea is to pick young enterpreneurs in these communities to set up their power generation plants and sell power to other members of these communities. The capital cost of the plant will be met through a loan at low interest. Let us see if the idea has legs. Fortunately, one of the top experts in this field is a classmate from my college days who went on to get a Phd from MIT in this field. He runs a company that makes biomass gasification plants and so I will be getting sound technical advice. For me, the biggest benefit from such distributed power generation schemes is that it provides power to corners of the country that the government could not care less about. Even more significant is that this will allow our village communities to develop internal capacity to create enterprises and keep the people from flocking to our already overcrowded cities with crumbling infrastructure. And finally, rural India will be much closer to a carbon-neutral and environmentally-healthy existence. Ultimately, I want to live in a way that I am completely independent of the government for power, water etc. while leaving the least footprint on this earth, so in a way I am doing this for myself. |
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#15 | |
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hazaron ke anna
Join Date: May 2008
Posts: 9,999
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On with a solar power mission
Slightly older but important news.
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#16 | |
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hazaron ke anna
Join Date: May 2008
Posts: 9,999
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India’s Renewable Energy Investment Grew By 12% In 2008: Says UNEP
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#17 | ||
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hazaron ke anna
Join Date: May 2008
Posts: 9,999
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Asian Development Bank to invest $2bn a year in clean energy
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#18 | |
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Registered User
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Green diesel through green technology
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#19 |
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Registered User
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A lot of research is happening on using algae as a source for bio-fuel....I saw a program in PBS where they showed algae has 100 times or more potential than corn as source of bio-fuel....and they best thing with algae is that they dont require fresh water
But still cost to manufacture when compared to fossil fuel is much much higher...someday algae can be a great source... But not sure it is carbon neutral though....(at any rate it is much greener than fossil fuels) |
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#20 | |
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hazaron ke anna
Join Date: May 2008
Posts: 9,999
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Karnataka plans solar power projects
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Biofuels recycle carbon in atmosphere. They absorb carbon while growing and put back the same amount to atmosphere when burnt. So, in effect there is no addition of carbon to the atmosphere. But, what I feel is biomass, wind, water based energy is in turn derived from solar energy. There could be a more efficient way of using solar energy directly instead of turning it to biomass. Pongamia, Jatropha or Neem require some energy to extract fuel. And also need considerable amount of fresh water. Hope in near future we would be able to harness solar energy directly in an efficient way.
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Davanagere, the future capital of Karnataka ... Builders of Mangaluru & Udupi... Green Building... Energy... Environment... Wildlife & Marinelife... Last edited by Krishnamoorthy K; June 25th, 2009 at 10:58 AM. |
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