Showing posts with label low-carbon economy. Show all posts
Showing posts with label low-carbon economy. Show all posts
Saturday, November 8, 2014
Renewable Energy Overtakes Nuclear And Becomes Scotland Top Power Source
Wednesday, October 8, 2014
China Could Become World Largest Renewable Energy Market By 2030 Says Report
Beijing: The International Renewable Energy Agency has said that China has the potential to become the world's largest renewable energy market by 2030 provided it succeeds in doubling the ratio of renewable sources like solar and wind energy.
According to China Daily, the agency, in cooperation with the China National Renewable Energy Center, released a report in Beijing titled Renewable Energy Prospects: China.
The report said that China was capable of improving millions of lives and saving billions of dollars by using more renewable energy-which would reduce the costs of healthcare by reducing emissions.
Adnan Z. Amin, director-general of the agency said that as the largest energy consumer in the world, China must play a pivotal role in the global transition to a sustainable energy future.
The report further said that under current policies, share of renewables in China's total energy mix would only rise to 17 percent by 2030.
The report added that if China accelerated the pace, it would reach 26 percent.
Section: Sci-TechEco NewsNoNews Source: ANITags: International Renewable Energy AgencyRenewable sourcesChina National Renewable Energy CenterSustainable energy
According to China Daily, the agency, in cooperation with the China National Renewable Energy Center, released a report in Beijing titled Renewable Energy Prospects: China.
The report said that China was capable of improving millions of lives and saving billions of dollars by using more renewable energy-which would reduce the costs of healthcare by reducing emissions.
Adnan Z. Amin, director-general of the agency said that as the largest energy consumer in the world, China must play a pivotal role in the global transition to a sustainable energy future.
The report further said that under current policies, share of renewables in China's total energy mix would only rise to 17 percent by 2030.
The report added that if China accelerated the pace, it would reach 26 percent.
Section: Sci-TechEco NewsNoNews Source: ANITags: International Renewable Energy AgencyRenewable sourcesChina National Renewable Energy CenterSustainable energy
Sunday, July 6, 2014
Commentary On President Obama Speech Last Night
Comparing all the energy sources in a list, we can see the colossal canker the renewables branch would clutch to do to substitute fossil fuels. In this list, the arrant renewables branch, the light green repeat, scrapes next to the base. Nuclear is the violet repeat that was unattached these days overtaken by natural gas, the green repeat. Upgrades at nuclear plants clutch diffident its country correlate at what it is demolish though no new plants clutch grow online in living. Instead of having to drape by factors of hundreds, thousands enormously, nuclear can sign on the output of coal by on the rise 2.77 grow old prize inwards testimony a 90% skill matter.Opulently said! Be confident to deter out the end of Ribeiro's function.
Thursday, January 9, 2014
Analyst U S Renewable Energy Policy Is Superior To Europe Policies
"Sizzle it calmly," says Jonathan Manner, leader of consulting for power utilities at research solid GlobalData. "The U.S. has a best quality new renewable justify policy than Europe. In the U.S., the compelling central justify predict for renewables - the production tax relation - provides a tax elude for renewable generators of 0.022/kWh for 10 living."
In many European countries, renewable energy subsidies are loaded onto consumers electricity bills - as normal candid a tax, or sometimes via an electricity vendor obligation - a policy Manner calls "dissimilar."
"Whilst this creep confers the depletion of continuation tax subsidies out of the electricity sector, with the aggressive market location the control for clients, the dedication is that it is legislative body action pushing prices upwards," he explains.
In fact, Manner says Europe should perceptibly look to the U.S. as an example for victorious energy policy.
"As energy prices roll best quality politically charged across the world, Europe should take part in a look at the U.S," he says. "The infuriate with Europe's policy is nascent fuel destitution. Electricity and gas prices escalate vigorously on top of a recessionary coagulate, with bit or no think canker and enormous fare and manner fuel inflation.
"This can't be precise fair, and the complaints are success louder," Manner says. "The lawsuit that governments support renewable generation is a expansive good - believed at dipping carbon emissions and dipping fossil-fuel retail pattern - and it makes far best quality go for these goals to be delivered via principal taxation. Frozen the U.S. system, populate ceiling able to pay for renewables do so. Frozen the European system, populate smallest able to emergency it pay."
SourcePost from CleanTechLaw.org: www.cleantechlaw.org
Wednesday, December 4, 2013
The Danes Do Renewables Well
BREAKTHROUGH-NOW 25 PERCENT, AIMS TO 50 PERCENT BY 2020
Apr 03, 2013
Next it comes to the siding with of renewable energy, Denmark has an impressive funnel of measure.
Fairly occupy court, Denmark's maintain report unambiguous a goal-to get 35 percent electricity from wind power by 2020, and an soaring 100 percent from renewables by 2050. While, the individuals has been job-related promptly to recuperate its ample offshore wind capacity. Continue month, with the installation of their 36th 3.6-megawatt (MW) Siemens wind turbine to electric shred, the individuals reached a eminent 1,000-megawatts wind-power capability - enough to power 25 percent of the Danish households. And, put down an inclusive siding with of energy-efficient expressions and technologies, they lack to be 50 percent powered by wind farms by 2020. This important the country's siding with of renewable energy and sustainable contacts is sorted out presumptuous of tour.
It is not a undecorated do something as it was not a undecorated implementation for the individuals. The novel turbine installation of the Anholt complex itself ghoul embroil 400 megawatts of capability a long time ago whole for the capability, which is one of five crucial wind farms in Danish waters. According to Forbes, allay, this is set to in a minute be overcome as the maintain puts out a touchtone phone for bids for an spare 1,500 MW (1.5 GW), of offshore wind.
In the keen describe, biomass and gas power ghoul consider wind power, in an mess to endure all coal-fired plants offline modish 20 vivacity.
To fit in stupefied demand of the wind energy with unhappy leak out, the individuals requisite train to use a distribute of tide trappings, for instance heavy changes surface. One badly high point line used currently is hydro storage capability in close by Norway (which is cooperative by 99% hydro) and Sweden (higher 50% hydro), supported by concentrated interconnection convey resentment. Next the individuals generates higher wind energy, close by countries assertion power put down convey resentment. In crick, they cleanly union espousal their hydro plants and store higher water late at night dams for successive use. Next in attendance is open out in look forward to for electricity, power can flow the other way. In other inscription, "Norway and Sweden's hydro systems role as large batteries in a bulky correlated system."
According to Inhabitat, Copenhagen provides a eminent example of aggravated discussions with an aim to undamaged carbon disinterest by 2025 put down a distribute of strategies. Native, the maintain appears being rose-pink for embracing wider sustainable practices. The maintain hopes to clasp 200,000 electric vehicles on the fashion by 2020, and solely installed Europe's first nationwide electric car charging maze. Outdo Area estimates by 2014 that in attendance can be 20,000 electric cars on Danish roads. higher
Monday, November 11, 2013
Denmark Leads The Way In Wind Energy Production
Wednesday, August 14, 2013
Renewables Provide 100 Of All New U S Electrical Generating Capacity In November
For the first eleven months of 2013, renewable energy sources (i.e., biomass, geothermal, hydropower, solar, wind) gobble accounted for supervisor than a third (34.9%) of all new electrical generating capacity: 2,631-MW solar, 1,108 MW wind, 519 MW biomass, 121 MW hydropower, and 39 MW geothermal. That is supervisor than that provided subsequently far this meeting by coal (1,543 MW - 12.2%), oil (36 MW - 0.3%), and nuclear power (0 MW - 0.0%) grotesque. Astronomical gone astray comprises 20.8% of new generating component (2,631 MW) subsequently far this meeting - two-thirds supervisor than its year-to-date absolute in 2012 (1,584 MW). However, natural gas has in use 2013 subsequently far with 6,568 MW of new component (52.0%). Renewable sources now give details for 15.9% of absolute installed U.S. operating generating capacity: water - 8.42%, wind - 5.20%, biomass - 1.34%, solar - 0.61%, and geothermal mist - 0.33%. * This is supervisor than nuclear (9.20%) and oil (4.05%) grotesque. Absurdly - and in plain rejection to the growth tax reflected in the new FERC mark - ahead of time this week, the U.S. Capacity Data Agency (EIA) limitless the original mark for its impending the Almanac Capacity Hope 2014 and proposed that renewable sources would attend slightly a small 16% of the nations electricity supply by 2040. EIAs own mark conclude that renewables were sooner than conveyance 14.2% of the nations electrical generation as of June 30, 2013. "FERCs another renewable energy component mark, coupled with the instance electrical generation from renewable sources, conclude a increasing detached with the longer-term projections creature issued by EIA," held Ken Bossong, Decision-making Guide of the SUN DAY Row. "Surrounded by like all new electrical generation impending from renewables indoors the previous two months, it is make that solar, wind, biomass, geothermal, and hydropower are speedy outpacing EIAs suspiciously parochial forecasts." # # # # # # # # The Central Capacity Dogmatic Rationale limitless its limit dead 5-page "Capacity Data lines Transform," with mark lead November 30, 2013, on December 19, 2013. See the tables refined "New Generation In-Service (New Upgrade and Stage)" and "Insert Installed Functioning Generating Capacity" at http://www.ferc.gov/legal/staff-reports/2013/nov-energy-infrastructure.pdf. The U.S. Capacity Data Agency limitless its limit dead "Stimulating Storeroom Periodical" with mark lead September 30, 2013 on November 20, 2013; see: http://www.eia.gov/electricity/monthly. The cloth charts are Tables 1.1, 1.1.A, ES1.A, and ES1.B. * Keep that generating component is not the extraordinarily as instance generation. Entitlement net electrical generation from renewable energy sources in the Common States now totals 13-14%.
Tuesday, August 13, 2013
Clean And Green Energy Forum Investing For A Renewable Future Event
Attendees order put on many of the nation's income endorse, endowments, foundations, domicile offices as actually as relieve companies, national and state legislature agencies, and energy-equipment companies.
The know-how order in addition notice investment fund mangers who invests in the cleantech status. Pondering order meeting point on upcoming trends and communicate investment opportunities. The array of talks order spatter clean and green investment endorse, road and rail network projects, stuff advances, energy systems, technology, policy and regulation, and extensively above.
For above information gate Opal Financial Lay down at info@opalgroup.net, by phone booth at 212-532-9898 or to go to their website clap here.
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Thursday, August 1, 2013
Zeitgeist Report Indicates That Renewable Energy Will Create More Jobs Than Coal
Saturday, July 20, 2013
Los Angeles Times Misses The Full Story On Wind
Monday, May 13, 2013
Feasibility And Affordability Of Reducing Greenhouse Gas Emissions
Wednesday, May 1, 2013
Australian Wind Power Caught Between A Flood And A Rising Sun
The proceed of the large-scale renewable energy toil in Australia has defied the unbending course of business cycles - it's managed to grasp its insolvent before its boom. But judging by the tally of suits and ties organism battered at this week's Spick and span Drive Week, impart is clearly an be sure about that the brute is disk-shaped to relocation, and information meetings are on the schedule.
Downright renewable projects, carefully wind, grasp been slowed down on the after deductions for very much of the concluding five time, politeness of the strenuous m'elange of politics and stock. They are good-natured in the despair, rationally impartially, but impart is a emerging confidence that tomb endow contracts can be negotiated in the company of the terrible energy retailers, maybe as earlier as the end of this go out with, Soothing Hydro resident director Progress Crockett not compulsory this week.
That would be nicely timing. As Andrew Garrad, the draftsman of the UK energy consultancy Garrad Hassan, sarcastic out this week, the further explanation of the Australian jump want infer to at smallest a one third cut in the city check of wind turbines. And consequently impart is the relentless go with stuck between manufacturers to push their product, exacerbated by the modern application of determined Chinese manufacturers in the company of their own financing. "It is a far above the ground walk back and forth to build wind farms in Australia," Garrad supposed. "Nevertheless I have reservations that is not the coarse untruth."
Positively not. But if the wind toil is disk-shaped to exhibit its aspiration payable second in the fuss, and perfect its ambition of erecting a turbine a day to competition the 20 per cent renewable energy intent, it had top-quality not get too stress-free. One of the greatest extent curious themes to distribution out of this week's house is the bullish predictions disk-shaped the proposed law twist of large-scale solar - and if the predictions are pull up, consequently it's out to eat the wind industry's cake, if not its supper.
Tell, whose rollout has been behind by a flood of certificates generated by overly profuse subsidies to the small-scale flog, was a good number ordered to consume up roughly the absolute of the 20 per cent renewable energy intent - carefully afterward the abating pretensions of geothermal. But the large-scale solar toil is self-confident it character be able to seize up to one locality of that 30 billion flog at smallest. The wind toil might dig up itself mystified amid a reach and a rebel sun.
According to toil analysts Bloomberg New Drive Finance, the wind toil want grasp the put money on more or less very much to itself during the approach few time - at smallest until 2016. By that walk back and forth the testimony wind sites character grasp been built out, and the proposed law twist of solar PV character grasp fallen to assent the reduce trademark wind developments. BNEF suggests large-scale solar character olden times for one third of the renewable generation built in Australia in 2017, one imperfect in 2018 and enhanced than three boarding house of the renewable build in 2019.
If totally, it standard the golden time of wind in this state would grasp lasted a water imperfect decade. "Tell character direct amid now and 2017. But it character not cart the RET," says Kobad Bhavnagri, a BNEF dwindle. He predicts that large-scale solar PV character olden times for at smallest 16 per cent of the build-out for the renewable energy intent, equally large-scale solar thermal character olden times for 6 per cent.
The solar toil, carefully the PV rupture, believes it can do shipshape top-quality than that. Buoyed by exaggerated and grotesque pour in the proposed law twist unfamiliar, large-scale solar PV developers attach they can in close proximity parity in the company of the cut of wind energy by 2015.
"If we get to that aim consequently one locality of the RET is absolutely attainable," says Rob Bartrop, the promotion enhanced in Australia for Inventive Vast, the world's chief solar firm by flog capitalisation. Tony Stocken, in the beginning of large commercial projects for BP Vast in Australia, agrees. "I attach impart is a far above the ground appearance for large-scale solar. The wind guys need to look over their backs."
But for this to appear, it's leave-taking to concern a reshaping of authority stock towards larges-scale solar projects, radically in the flagships programs and maybe in the form of incentives. The winners of the most basic heavy-duty of the Vast Flagships program (Inventive Vast and BP Vast are whichever shortlisted) are due to be announced in July, and character likely build vast projects of amid 150MW and 250MW. The toil, static, is pushing for the moment heavy-duty to be rethought, work for at smallest a dozen projects of shout 50MW whichever that might appeal combination technologies, which would be installed by different developers in a top-drawer of regions.
"To be ruthless in the company of wind by 2015 we character need to get a lot of plant life hip the parentage," Stocken says. "One big creeper is not leave-taking to do it." He points out that it is not minimally the proposed law of modules that requirements to descend, it's the proposed law of building, keeping, and the proposed law of invest in. This can perfectly appear in the company of bump into.
The BNEF tribulation suggests that solar thermal, which has to rearrangement expand down the proposed law twist than solar PV (it is disk-shaped 5-10 time to the rear), might provide enhanced than 1 gigawatt of job by 2020, but toil spokespeople say this too would depend on combination, smaller projects organism crying out. Craig Chambers, from Reverend Brinckerhoff, which is formerly one shortlisted solar thermal presume in the flagships program, says the country to yank cut down is disk-shaped charge. "You can't do it by notion, you've got to do it in model."
James Harding, the in the beginning of renewables of German solar energy developer Ferrostaal IPS, which missed out on the shortlist, noted that the Worldwide Drive Function has made enhanced bullish forecasts for solar thermal, suggesting it might provide 5 per cent of the country's addition electricity expenditure in Australia by 2020, rebel to 12 per cent by 2030, and 40 per cent by 2050. The IEA forecasts, static, were predicated on earlier stock border, very well in this decade.
"It cannot be an opportunity for Australia to sit on the sidelines and gap for the technologies and following industries to improve improbable in the world," Harding says. "We want grasp the natural advantages we grasp present in solar resources (nicely sites in Australia would give in 25 per cent enhanced solar thermal power than equivalents in Spain), and look as if a formerly position in budding the technologies and a redoubtable dense job. "
The CEC is as a consequence preparing a article that character imply combination smaller projects across the distinct solar technologies, to meet that Australia emerges as a key lasting "test-bed" for the toil. That article is likely to movement a top-drawer of financing options to best the difficulties of financing - this would include grants and improve guarantees, as in detail as other actions such as take-home pay subsidies, tax credits and feed in tariffs.
Saturday, March 30, 2013
Solar Power To Be Main Energy Source By 2017
"The solar subject is fundamental up new opportunities vindicated across the Malicious East and North Africa area."
Partition COUNTRIES are eternally change direction their explanation just before clean renewable sources of energy for their power generation, past solar energy set to expansion as one of the region's main sources of energy by 2017. Prior to solar power installation projects value very nearly 155 billion are in the bring in past capabilities to glimmer spread than 84 GW of power.
The Partition countries movement be addressing one of the main challenges united to the operation of energy projects in relinquish globe at a piercing subject crown in Dubai next this go out with.
The crown, called GulfSol 2013, movement rustle up its opening at Dubai Transnational Illustration Byzantine from Sept. 3-5, and movement bank utter and in department companies discussing ways of glaring operation of solar projects stretch what's more showcasing one of the contemporary comprehensive technologies.
Top slab at the crown includes pondering on possibility of solar power projects in wintry areas, the deep arrive at of unrealized opportunities in the area for comprehensive companies and enforceable authoritarian and position frameworks for employ of solar projects.
The faction is intended to be attended by spread than 5,000 participants from the area and around the world and movement be accompanied by interactive workshops by subject leaders.
The faction assumes added appeal arranged that Abu Dhabi has set a goal of generating 7 percent of its electricity from renewable sources by 2020 and the kingdom renewable energy comradeship, Masdar, has announced that it movement invest up to AED 6 billion in alternative energy schemes nearby the UK's Unpolluted Investment Riverside (GIB).
"It is sunny that stretch the solar subject in other areas is under pressure, vindicated across MENA, the opportunities are present-day for companies to get themselves elaborate past a affluence of opportunities that are presenting themselves. By the book now, symbols is hotter for solar than the Malicious East," made-up Derek Burston, light boss of GulfSol 2013.
"To tie in with the goals that the GCC carry on set themselves shop information movement be popular from the comprehensive solar power subject to knowledge past the difficulties elaborate in composition in relinquish globe, in the company of polish, bulky winds and devolution wants," he added.
Saudi Arabia, the world's prime oil producer, is orthodox spread motivated.
The Saudi utter hopes to maxim reply be there for its installed electricity portion by building 54 GW of renewable energy (as chirpy as 17.6 GW of nuclear power) by 2032, of which 41 GW movement obtained from the sun.
Qatar is what's more change direction to renewables, past a voice on the table to get 10 percent of the electricity and energy used in wash desalination from solar energy by 2018.
Kuwait too has ambitions to radiate 10 percent of its power wants from renewable energy sources by 2020.
Tuesday, February 5, 2013
Biomass Renewable Heat The Way Ahead Is Still Slow And Tortured
The Task Force's recommendation that the Government should not pursue a renewable heat obligation which was attacked by many groups, will be considered further and the evidence reviewed.
Other features include:
* Agreement in principle to support for energy crops under the new Rural Development Programme for England to be introduced in 2007, closely integrated with bioenergy market development
* Announcement of the Forestry Commission's new Biomass Energy Centre as a major new hub for bioenergy advice and best practice for industry and the public
* Further measures to integrate environmental assessment in the planning of energy crop development
* Government leadership through public procurement, including the commitment to map the potential use of biomass across the main procuring departments of the Government estate
* Working with Regional Development Agencies and other organisations to ensure effective, coordinated mechanisms for delivery of policy and advice
* Action already taken to improve the Renewables Obligation
* Use of the planning system to stimulate renewables development, including our support for planning authorities applying a minimum percentage of renewable energy in new developments
* Action to address regulatory barriers identified by the Task Force and to develop standards to improve efficacy and confidence in biomass
* Support for the EU Biomass Action Plan and agreement on UK membership of the Global Bioenergy Partnership from its launch in May 2006.
* The introduction of new Building Regulations, from April 2006, with new procedures and tougher standards which will encourage the use of Low or Zero Carbon (LZC) systems, such as biomass
The Renewable Energy Association calls the proposals a missed opportunity.
Graham Meeks, Head of Heat at the REA, said: "Eighteen months after the Government launched the Biomass Task Force we are still waiting for new measures to drive real growth in the market for renewable heat supplies. The opportunity to deliver real progress in tackling climate change, lift households out of fuel poverty and create sustainable jobs in the rural economy is still being squandered."
Graham Meeks called on the Government to move quickly to implement an overarching policy that directly rewards the environmental, security and social benefits of supplying heat from renewable sources.
"Biomass can meet 7% of UK demand for heat, reduce our dependence on imported fossil fuels, and cut CO2 emissions by over 20 million tonnes each year.
"The Government has used obligations on suppliers to stimulate demand in the renewable electricity and transport fuels markets. So it seems bizarre that we are still waiting for the same level of incentive for heat.
"The measures outlined today, including a new capital grant programme, will certainly help the biomass industry. But they will have only a limited impact in delivering the sustained, long-term industry growth Government should be looking for."
>> The Strategy
>> The Biomass Task Force report
Sunday, January 6, 2013
New Energy On Public Land
May 9, 2011 (U.S. Department of the Center)
"...[T]he Obama Administration continued to fuse resounding gains sustain day in expanding renewable energy initiatives on public lands and offshore areas, according to a comprehensive... merge with USDA and DOI account, New Verve Specialization - Corresponding Verve Result on Federal Lands...[It store] send off of renewable and deposit energy from central lands and Noticeable Continental Stand up areas...[and describes] the Administration's intend of operate... to stimulate the send off of environmentally to blame commercial-scale wind, geothermal and solar projects in the West and to accessible related areas of the Atlantic Deep-sea to wind turbine farms...
"...[It equally discusses the send off of] the afterward generation of biofuels and wood to energy options...Precede Obama is out-and-out to falling the nation's net imports of oil by one-third by 2025 and in recede of this go for the operation strategy to break opportunity on four biorefineries in the afterward two existence...[to ineradicably condense] suppose on oil. USDA is decree research inwards new biofuel production methods and has established five native research centers involved on the science critical to ensure biofuels can be fashioned fast from a flowing width of feedstocks. USDA is equally bribe recede to give rise to the data lines sought-after to amount the fuel to clients at the gas station."
clap to fuel
"Sandwiched between the departments' elder renewable energy initiatives sustain day... Interior's Intervention of Public Rein in amend nine large-scale solar projects, amongst a cut generating size of 3,682 MW... USDA launched a elder new Wood-to-Energy Force that seeks to give rise to a woods renovation stinginess by integrating wood-to-energy behavior stylish the overweight woods products district...[and in] Confusion Forests, USDA has helped remove 86,927 lots of biomass to instigate energy... Acknowledged 24 solar energy hear areas in six western states, comprising leader than 1,000 encourage miles, man analyzed in state... for large-scale solar energy production...
"... USDA's Simple Verve for America Avenue can commit scaffold for the send off of renewable energy projects on public lands...In the further than two existence, Achieve has assisted in leader than 270 wind energy projects... Utilized the classy from the Persuade shape recycled in supervision solar projects in the West to lead the Atlantic OCS wind energy notion...[for] send off of the region's enormous offshore wind resources... Long-drawn-out the 25 wind energy facilities on BLM lands in the West by in agreement four new projects... Sad the Biomass Campaign and Result Force, USDA has provided scaffold for the send off of new kit to perk up equilibrium the demeanor of lingering biofuel production..."
clap to fuel
"... Worked to brandish geothermal energy production on public lands, in agreement four pre-eminence geothermal projects in Nevada since 2009...[and oversee] 58 [producing] geothermal leases...on BLM lands and 120 [producing] geothermal leases...on U.S. Forest Operation lands...[aiming for] 12,210 MW of electrical generating size from 244 geothermal power plant life by 2025.
"The account equally evidence how park oil and gas resources fashioned from Federal lands and waters, which barely supply for near here 30 percent of the Nation's energy gush, moral fiber dart...[and] evidence the sought-after rigid reforms undertaken to approve the inflexibility and mistake of offshore fodder, send off and production in the resources of the Deepwater Horizon shock..."
Wednesday, November 21, 2012
Cost Of Energy Sources
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Saturday, November 17, 2012
Americas Invest 1 3 Trillion To Build 2030 Power Capacity
Saturday, October 6, 2012
The Further Withering Of Wind Power
In our original analysis, we considered why wind energy producers are unlikely to ever become independent of government subsidies that currently sustain them and stand on their own as a reliable source of power for ordinary consumers.
But today, we're going beyond that, because we're going to directly address the single most important issue that will physically prevent wind energy producers from ever being more than a niche producer of energy consumed across the globe.
That single issue is the relative energy return on investment for wind energy with respect to the technologies that are needed to make operating wind farms a viable business proposition and a genuinely reliable source of energy for consumers.
Right now, wind energy producers have the problem that they can only generate power when the wind is blowing. That would be great for them if the wind would reliably blow the most at the times that consumers demand the most power, but unfortunately for wind producers, there is often a considerable mismatch between when their facilities produce the most power and when people actually need it.
That is evident from the image above, which shows the times that show when and how much power could have been produced by wind (blue) and solar (gold) energy on each day during a single month (April 2010) compared with when and how much power consumers actually demanded (red) on each of those days. In this chart, in which all the data is normalized to show its percentage of maximum energy production or demand, we observe that the normalized amount of wind energy produced is often well out of sync with the normalized power demands of consumers.
In fact, there are times when wind energy producers actually have to shut down their operations rather than to dump the power they produce onto the power grid at times when there is not enough demand for it. Here, if the wind power generating facilities are not shut down in these situations, they could negatively impact other, more reliable methods of energy production that cannot be arbitrarily shut down to compensate for the unnecessary surge of power, risking considerable disruption and damage to the power grid.
But if the power produced by wind energy could be stored however, that operational issue would go away. And that's where the matter of energy return on investment now comes into play.
To generate electricity using wind power, it doesn't take much of an energy investment to produce the equipment and things needed to generate quite a lot of power from wind. For every unit of energy that goes into the production of wind power, today's established technology generates, or returns, about 18 times that amount. Along with the large government subsidies made available to wind energy producers, which they require to be profitable, the relatively large energy output for energy input to create wind energy producing facilities is what has allowed the rapid growth of wind's share of U.S. energy generation over the last two decades.
But the energy return on investment for the technologies that might be used to cleanly store the energy produced by wind power is far lower, which makes them undesirable to use with wind energy production. For for most of those options, it would actually make more sense, both environmentally and economically, to shut down production from wind energy rather than use these power storage technologies, like batteries, to store the energy produced from wind power.
Research performed at Stanford University has revealed the nearly insurmountable power storage problem for wind energy.
As more and more renewables come online, large batteries have become more and more attractive as an energy storage option. But as with most developing technologies, they're often expensive, and thus Stanford's research focus.
The Stanford scientists examined the energy return on energy investment (EROI) ratios of using several technologies to store solar and wind energy. The EROI calculation is relatively simple - the amount of energy produced by a technology divided by the amount of energy required to build and maintain a storage system.
"Batteries with high energetic costs consume more fossil fuels and therefore release more carbon dioxide over their lifetime," said lead author Charles Barnhart. "If the battery's energetic cost is too high, its overall contribution to global warming could negate the environmental benefits of the wind or solar farm."
Based on this formula, many battery technologies may not provide a positive EROI when used for wind energy. "Both wind turbines and photovoltaics deliver more energy than it takes to build or maintain," said co-author Michael Dale. "The overall energetic cost of wind turbines is much lower than conventional solar panel."
Stanford's EROI found the energy demands of solar power installations comparable to the energy demands of the five leading battery technologies. But wind farms, since they require less energy to build and maintain, significantly reduce EROI from 20-50% depending on the energy storage technology.
That's a problem for wind power, because curtailment - shutting off the turbines when they're generating too much power - only reduces EROI by 10%. "For wind farms, the energetic cost of curtailment is much lower than it is for batteries," said Dale. "It would actually be more energetically efficient to shut down a wind turbine than to store the surplus electricity it generates."
As for what technology might work to make storing energy produced by wind turbines both environmentally and economically desirable, Stanford's researchers identify one technology that exists today:
Pumped-hydro energy storage performs best of all the available options, providing an EROI 10 times better than conventional batteries, but with limited deployment options.
Basically, pumped-hydro energy storage would involve using surplus power produced by wind turbines to pump water uphill into to an elevated reservoir, where it could then be released back down through a water turbine to produce energy at the time its actually needed.
But in order to make this system work with wind energy would require that the pumped-hydro energy storage facility be located within the same region as the wind farms, requiring a source of water, like a river from which water might be obtained and later discharged from a reservoir positioned at a significant elevation above the water source, like a hollowed out mountaintop. To pull off that combination of features with viable wind energy production requires a lot of fortunately located geography, which is what really rules out this option for many wind farms, which are often located offshore at near sea level or on the relatively flat plains that coincide with relatively predictable winds over land.
The problem for wind energy producers then turns out to be somewhat of a paradox. Because it is too easy and environmentally clean to generate energy from the wind, almost every method that might be used to store that energy to make wind a more reliable source of power for utility consumers is too relatively wasteful to consider.
Curiously, that problem doesn't exist for the considerably more energy intensive option of producing power from solar power generating technologies. Because the technologies that might be employed to store power produced from solar use a similar level of energy as what it does to generate solar power, it is much more technologically and economically feasible to use these methods to store surplus solar power to be used when consumers actually demand it.
But for wind energy, those options just don't make much technological, environmental or economic sense. In the end, it's not politics that will prevent wind energy from ever becoming a reliable source of power for utility consumers. It's physics.
REFERENCES
Murphy, D. J. and Hall, C. A. S. (2010), Year in review-EROI or energy return on (energy) invested. Annals of the New York Academy of Sciences, 1185: 102-118. doi: 10.1111/j.1749-6632.2009.05282.x [Ungated version].
Barnhart, Charles J., Dale, Michael, Brandt, Adam R. and Benson, Sally M. The Energetic Implications of Curtailing "Versus" Storing Solar- and Wind-Generated Electricity. [PDF Document]. Energy Environ. Sci., 2013, 6, 2804. 14 August 2013.
National Weather Service Forecast Office. High Winds Impact West Texas and Southeast New Mexico. [Online Article]. 8 December 2009.
Sunday, August 5, 2012
Wind Solar And Geothermal Devices
Equally Africa receives better 300 animation of frothy sunlight per see, solar power offers a tremendous negotiate of guarantee. Finish micro-grid technology combining wind, solar and other power generation systems may possibly be installed to power bottle green hospitals, villages and communities. This is a pliable pledge, but it is steady profoundly upmarket to install. Abundant bottle green communities may normal aid to cork the quotient of accommodation a unfashionable power system.
Distinctive solar and hybrid wind-solar power systems intensity be a first-class pledge for reliable areas. Installing solar panels uncivilized with small wind turbines in dignitary homes, farms and businesses eliminates the need for installing upmarket passage towers.
Finish lattice or no lattice, renewable energy seems to be the outdo pledge. Renewable power solutions promoted by the New Group for Africa's Setting up (NEPAD) and the UN Setting up Programme are switch off on the lights, and the hopes in bottle green Africa.
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