Group items tagged dam - Clean Energy Transition

Red Sea mega-dam would be 'irresponsible' - energy-fuels - 07 December 2007 - New Scien... - 0 views

environment.newscientist.com/...am-would-be-irresponsible.html

dam

shared by Colin Bennett on 07 Dec 07 - Cached

he scheme would literally part the Red Sea with a massive wall more than 150 metres high, one kilometre thick and 100 km long, stretching between Yemen in the north and either Eritrea or Djibouti in the south. Details of the proposed dam are published in the current issue of International Journal of Global Environmental Issues (DOI: 10.1504/IJGENVI.2007.016114).
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U.K. May Support Tidal Dam to Meet Renewable-Energy Target - 0 views

www.bloomberg.com/...news

tidal uk

shared by davidchapman on 05 Feb 08 - Cached

davidchapman on 05 Feb 08

The U.K. Business Secretary John Hutton, who earlier this month pledged to support new nuclear plants, said the government will consider whether to back a tidal power project with an output equivalent to five reactors. The government will study proposals including a dam between England and Wales that would produce 8,640 megawatts of power by 2020, enough to meet 5 percent of U.K. demand, the minister said today in a statement. It will also assess plans by Tidal Electric Ltd. to build a walled pool to produce 60 megawatts.

<div class="cArrow"> </div><div class="cContentInner">The U.K. Business Secretary John Hutton, who earlier this month pledged to support new nuclear plants, said the government will consider whether to back a tidal power project with an output equivalent to five reactors. The government will study proposals including a dam between England and Wales that would produce 8,640 megawatts of power by 2020, enough to meet 5 percent of U.K. demand, the minister said today in a statement. It will also assess plans by Tidal Electric Ltd. to build a walled pool to produce 60 megawatts. </div>

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Hans De Keulenaer on 05 Feb 08

Ah Severn and Cape Cod - just build the bloody things, or be silent forever.

<div class="cArrow"> </div><div class="cContentInner">Ah Severn and Cape Cod - just build the bloody things, or be silent forever.</div>

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Giant Wind Dam To Utilize Sails - 0 views

got2begreen.com/atic-wind-dam-to-utilize-sails

electricity wind

shared by Sergio Ferreira on 13 Nov 07 - Cached

A dry-weather crisis for Hoover Dam | CNET News.com - 0 views

news.com.com/2100-13576_3-6198255.html

usa water

shared by davidchapman on 30 Jul 07 - Cached

davidchapman on 30 Jul 07

To get a sense of what seven years of drought in the Colorado River basin looks like, all you have to do is gaze out at Lake Mead from the top of the dam here and view the 108 feet of brightly colored earth below the familiar red walls rising from the water.

<div class="cArrow"> </div><div class="cContentInner">To get a sense of what seven years of drought in the Colorado River basin looks like, all you have to do is gaze out at Lake Mead from the top of the dam here and view the 108 feet of brightly colored earth below the familiar red walls rising from the water. </div>

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IEA Says Massive Investment in Alternative Electricity Generation to Reduce CO2 Emissions - 0 views

thefraserdomain.typepad.com/...noted-in-pass-7.html

carbon emissions investment

shared by Sergio Ferreira on 13 Dec 07 - Cached

The world needs to build 30 nuclear power stations and the equivalent of two Three Gorges dams every year to prevent dangerous climate change, the International Energy Agency has said. It also needs to build 13,000 wind turbines and 40 coal and gas power stations fitted with carbon capture and storage technology each year between 2013 and 2030, the head of the Agency told the climate change conference in Bali.
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New Underwater Turbines Use Shallow Water to Make Electricity - 0 views

www.greenoptimistic.com/...hydrovolts-underwater-turbine

water wave

shared by Colin Bennett on 04 Aug 09 - Cached

Colin Bennett on 04 Aug 09

Seattle-based Hydrovolts Inc. has developed a new system which can be used to generate electricity from small, unassuming waterways such as irrigation canals, without the use of dams.

<div class="cArrow"> </div><div class="cContentInner">Seattle-based Hydrovolts Inc. has developed a new system which can be used to generate electricity from small, unassuming waterways such as irrigation canals, without the use of dams.</div>

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Study: Renewable Energy Not Green | LiveScience - 0 views

www.livescience.com/...070724_renewable_energy.html

greening renewables lifecycle

shared by davidchapman on 31 Jul 07 - Cached

davidchapman on 31 Jul 07

Renewable energy could wreck the environment, according to a study that examined how much land it would take to generate the renewable resources that would make a difference in the global energy system. Building enough wind farms, damming adequate number of rivers and growing sufficient biomass to produce ample kilowatts to make a difference in meeting global energy demands would involve a huge invasion of nature.

<div class="cArrow"> </div><div class="cContentInner">Renewable energy could wreck the environment, according to a study that examined how much land it would take to generate the renewable resources that would make a difference in the global energy system. Building enough wind farms, damming adequate number of rivers and growing sufficient biomass to produce ample kilowatts to make a difference in meeting global energy demands would involve a huge invasion of nature. </div>

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Pumped Hydro: Is it TOO Green? | PeteSinger - 1 views

www.renewableenergyworld.com/...pumped-hydro-is-it-too-green

renewables methane hydropower

shared by Hans De Keulenaer on 10 Jan 11 - No Cached

In the latest Electric Power Research Institute Journal, an article titled "Hydropower Reservoirs: A Question of Emissions" notes that reservoirs used for hydropower and for pumped-hydro energy storage are not necessarily as green as you might imagine. Or rather, they might be too green: carbon-rich organic material that accumulates on the reservoir floor can be the source of carbon emissions. A recent study of the 90-year-old Lake Wohlen, in Switzerland, for example, found high emissions of methane, as recently reported in the journal Environmental Science and Technology, in an article titled: "Extreme Methane Emissions from a Swiss Hydropower Reservoir: Contribution from Bubbling Sediments."
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F F on 11 Jan 11

Applies to both hydro reservoirs (i.e. water pooled behind a dam) and hydro pools filled with pumped-hydro. Note that the latter, pumped-hydro, already carries the emissions profile of the energy used to power the turbine pumping the water against gravity, scaled up for conversion efficiency losses.

<div class="cArrow"> </div><div class="cContentInner">Applies to both hydro reservoirs (i.e. water pooled behind a dam) and hydro pools filled with pumped-hydro. Note that the latter, pumped-hydro, already carries the emissions profile of the energy used to power the turbine pumping the water against gravity, scaled up for conversion efficiency losses.</div>

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ENN: Small Hydroelectric Dams Not So Green - 0 views

www.enn.com/37903

brazil hydropower

shared by Glycon Garcia on 27 Aug 08 - Cached

China warns of catastrophe from Three Gorges Dam | Environment | Reuters - 0 views

www.reuters.com/...idUSPEK7149620070926

hydropower

shared by Colin Bennett on 26 Sep 07 - Cached

Directory:Temsan River Microturbine - PESWiki - 0 views

peswiki.com/...tory:Temsan_River_Microturbine

hydropower

shared by Colin Bennett on 20 Dec 07 - Cached

The Turkish Electromechanics Industry (TEMSAN) has come up with a microturbine that can generate electricity from river or stream flows, without a dam. The smallest unit would power two ordinary homes. The return on investment is around two years
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Top 7 alternative energies listed - environment - 14 January 2009 - New Scientist - 0 views

www.newscientist.com/...ternative-energies-listed.html

wind geothermal tidal renewables wave hydropower

shared by Ako Z°om on 08 Feb 09 - Cached

Watch a video of Jacobson discussing his findings. The energy sources that Jacobson found most promising were, in descending order: • Wind • Concentrated solar power (mirrors heating a tower of water) • Geothermal energy • Tidal energy • Solar panels • Wave energy • Hydroelectric dams
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Ako Z°om on 08 Feb 09

finding the good sustainable energy is not so easy ... but the right way are for start to become continous choices ...

<div class="cArrow"> </div><div class="cContentInner">finding the good sustainable energy is not so easy ... but the right way are for start to become continous choices ...</div>

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Ako Z°om on 08 Feb 09

what are the good next soltutions for sustainable energies ? .. infacts...

<div class="cArrow"> </div><div class="cContentInner">what are the good next soltutions for sustainable energies ? .. infacts...</div>

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