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EWEA Offshore 2013 Day Three

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    P h o t o g r a p h

    | J a s o n

    B i c k l e y

    / E W E A

    U nprecedented politicaluncertainties could forcethe European offshorewind industry to slash its 2020target from 40GW to about 27GW.

    An EWEA survey, usingresearch from Ernst & Young,illustrates how difficult it will befor the industry to raise capital ata time of high regulatory risk.

    One senior source tellsRecharge that EWEA membersare actively debating whether toformally abandon the 40GWtarget in favour of somethingmuch lower but more achievable.

    EWEA chief executive TomasBecker tells Recharge: We cantpretend this shortfall is not aproblem. We are having a bigdiscussion about it. Hopefullythis situation will be resolved, butI cant predict what the results ofthose discussions will be.

    Te EWEA survey, Wheres the Money Coming from? FinancingOffshore Wind Farms, suggeststhe industry would need to raiseup to 123bn ($165bn) by theend of the decade if it is to meetits 40GW target for installedcapacity.

    However, it points out thatshould regulatory instability

    prevent the industry reaching40GW, even a conservativeassumption of 25GW wouldrequire up to 69bn over the nextseven years. Te survey saysinvestment is being blocked bythe uncertainty caused by

    RECHARGEVISIT US AT STAND 30F34

    PRODUCER OF THE EWEA OFFSHORE DAILIES

    Continued on page 2

    SCALING DOWN:

    EWEAs JacopoMoccia saysthat achievingcurrent Europeanoffshore targetsis extremelyunlikely

    40GW goalcould beblown outof the waterEurope may have to accept a smalleroffshore target, writes Christopher Hopson

    EWEA OFFSHOREFRANKFURT 2013

    RECHARGEewea.org | rechargenews.com Produced by

    D A Y T H

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    BERND RADOWITZ

    Dong Energy has urgedAngela Merkel to clarifythe future of Germanys

    support system for offshore wind.Te utility has written to the

    chancellor and her environmentminister, Peter Altmaier, askingthem to provide certainty aboutwhat happens when the currentcompression model expires inlate 2017.

    Te compression model offershigher feed-in tariffs (FI s) foroffshore projects in the rsteight years of operation, tohelp companies meet upfrontinvestment costs. A er that, FI sfall to a lower-than-usual level.o qualify, projects must be grid-

    connected by 31 December 2017.Tere needs to be some kind

    of certainty over what happenspost-compression model, LarsTaaning Pedersen, Dongs headof European wind development,

    tells Recharge. We have writtena letter to the chancellor inwhich were trying to addressthis and highlight these issues. Ithink in general they are aware.

    Because of the regulatoryuncertainty, Dong is holdingback on an investment decisionon its 300MW Borkum

    Riffgrund 2 project in GermanysNorth Sea.

    Te Danish utility has receivedan unconditional pledge bytransmission system operatorenne to connect the project to

    the grid by 23 December 2017 but Dong says that is too late.

    Pedersen says his company will

    will not put more than 1bn[$1.35bn] at risk with only aneight-day margin. Tat, even forDong, is too ambitious.

    He adds that if there is no visibility in Germany, thecompany will spend its moneyin the UK, Denmark orelsewhere.

    Clarify wind rules, Dong urges Merkel

    EWEA OFFSHORE 2013

    SUPPORTINGLETTER: Donghas written toAngela Merkel andPeter Altmaier

    P h o

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    C D strikeprice is good

    enough

    EWEA OFFSHORE 2013

    KARL-ERIK STROMSTA

    T he UKs draf Contract orDifference (C D) strikeprices are more thansufficient or E.ONs 700MWRampion project, claims anexecutive, whose support or therenewables support system iesagainst criticism o the Britishgovernment by other developers.

    We think [the draf strikeprice] is good enough at 155[$250] per MWh certainly orour Round 3 Rampion project,said Michael Lewis, managingdirector or E.ON Climate &Renewables, speaking yesterdayat the Recharge Tought LeadersBrunch at EWEA Offshore 2013.

    Several other big developersoperating in the UK includingRWE and Centrica havereacted coldly to the draf strikeprice, suggesting they may notbuild projects unless support isincreased.

    Despite the bruising energydebate under way in both the UKand Germany, Britain hasemerged as a much morecom orting destination orinvestment than Germany, claimsLewis, who says the German

    energy industry is in crisis.Much to my surprise, [the

    UKs Offshore ransmissionOwnership regime] has been areally good innovation, Lewissaid. Its working very well, incontrast to the German offshoregrid-connection system, whichhas been a big, big problem.

    E.ON is currently building the288MW Amrumbank Westproject in the German North Seaand the 219MW HumberGateway in UK waters, andsubmitted a planning application

    or Rampion this year.Lewis supports moving the C D

    system towards a competitive

    tendering process or offshorewind, which is the UKgovernments ultimate intention.

    [Doing so] reveals the price oeach project rather than aone-size-ts-all, because we allknow theres a big differencebetween [Forewinds 9GW]Dogger Bank and Rampion.

    Insight at ThoughtLeaders VIP brunchValuable insights about thestate of the offshore windmarket were heard at theRecharge Thought LeadersVIP brunch at EWEA Offshoreyesterday morning.

    Here are a few highlights of whatthe four main speakers said:

    Henrik Stiesdal, SiemensWeve beneted from societywanting us to be here, even ata very signicant premium. But

    societys patience is gettingvery stretched right now. Andmany of us, if we were not inthis industry, might feel the

    same way if were honest withourselves.

    Michael Lewis, E.ON Climate &RenewablesIts not that utilities andcertainly not E.ON are againstrenewables. What were sayingis, yes we support renewables,but we support them in thecontext of a market thatfunctions properly and keepsthe lights on. And that bit of themessage is not getting through.

    Andrew Garrad, EWEA

    If youd asked me ve yearsago whether anybody outsideNorthern Europe would beinterested in offshore wind,I would have said no. Werenow seeing export marketsemerging in Taiwan, in China,

    in Korea, even in America. Sofor offshore wind globally I feel

    positive.

    Johan Sandberg, DNV GLThe offshore wind value chainhas been sub-optimal in manyways. Vessel owners mightoptimise their vessels, but then

    on the other side of the valuechain you have foundations,which perhaps dont t thatwell with the installationvessels. So we want to betterintegrate the value chain

    so we dont have this sub-optimisation.

    TOP TABLE: From left: MichaelLewis, AndrewGarrad, JohanSandberg andHenrik Stiesdal

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    BERND RADOWITZ

    O ffshore wind energy isabsolutely essentialfor the success of theEnergiewende Germanystransition from nuclear power torenewables and will push downoverall costs by billions each year,according to a study presented atEWEA Offshore yesterday.

    In the reports optimisedgrowth scenario in which thecountrys offshore wind capacitywould be boosted to 54GW by2050 so-called exibilitycosts will be far cheaper than in

    scenarios with higher shares ofonshore wind or PV, says theFraunhofer Institute for WindEnergy and Energy SystemTechnology (IWES). Flexibility

    costs arise from backing uprenewable power and thecurtailment of projectselectricity output.

    From 2050 onwards, exibilitycosts would be 2.9bn ($3.9bn)higher in a scenario withlimited offshore output and ahigher onshore capacity. eywould be 5.6bn higher if therewas a massive build-up of PVinstead of offshore wind.

    Further potential forsignicant cost reductions wouldcome from a joint EuropeanNorth Sea offshore grid, thestudy says.

    A renewable-energy mix witha large share of offshore windenergy is more cost-effective inthe long term than a generationmix without this technology.

    Offshore will also ensure thesecurity of Germanys powersupply and has high systemquality thanks to its excellentpower plant characteristics, theresearchers point out.

    Contrary to onshore wind or

    PV, wind turbines at sea canprovide electricity almost everysingle hour of the year withabout as many operating hoursas fossil-fuel power plants, the

    study stresses. ey produce power about

    340 days per year, and thatpower production can beforecast fairly accurately.

    e turbines are also muchbetter equipped to provideoperating reserve than otheructuating renewable-energysources, and therefore play a keyrole in stabilising the powersystem.

    P h o t o g r a p

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    k p h o t o

    Offshore

    essential toEnergiewendeMEASURING UP:

    A FraunhoferIWES Lidar buoyin the GermanNorth Sea

    EWEA OFFSHORE 2013

    P h o t o g r a p

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    h o f e r

    I W E S

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    CHRISTOPHER HOPSON

    Scira Offshore Energy hascommissioned Fugro EMUto perform hydrographicand geophysical surveys atSheringham Shoal wind farmand along the export cable andtransit routes.

    Te 317MW site, which hosts

    88 Siemens 3.6MW turbines andtwo offshore substations, is about20km off eastern England.

    Te latest surveys, arequirement of MarineManagement Organisationlicence conditions, will providedetailed scour surveys aroundeach monopile foundation, as wellas bathymetry along the areas ofexport and intra-array cables.

    Fugro EMU will obtainhigh-resolution data using itslatest multi-beam echo sounders.

    Fugro to do

    SheringhamShoal surveys

    P h o

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    e t t y

    KARL-ERIK STROMSTA

    T he UK and Germany arelosing ground as theworlds most attractivecountries for offshore windinvestment because of theirsquabbling politicians, says Ernst& Young (EY).

    With respect to offshore wind,the UK and Germany still holdcommanding leads atop theconsultancys quarterly rankingsof the attractiveness of globalrenewables markets.

    But the gap separating themfrom the next two countries onthe list China and the US has shrunk signicantly inrecent months, with politiciansapparently at stalemate overhow heavily to emphasiseoffshore wind in the years ahead,

    at a time when momentum iscritical.

    Te British offshore industry isin a state of heighteneduncertainty ahead of the 2015general election, withdisharmony on energy policyseeping throughout the politicalsystem, EY says.

    Germany is faring a littlebetter, although there too thegovernment has backed awayfrom the more ambitiousattitudes it held until recently.

    Offshore wind is crucial to theoverall attractiveness ofrenewables investment in thetwo countries, although both are

    also important markets foronshore wind and PV.

    Europes broader renewablessector has seen its lustre dim.While several EU countries including France, Denmarkand the Netherlands saw theirposition on the 40-nation indeximprove, they were more than

    offset by the declining prospectsof others.Te sharpest adjustment was

    handed to erstwhile renewablesheavyweight Spain, whichtumbled to 19th place from 13ththree months ago, to rank behindBrazil, Chile and Portugal. Inonshore wind, Spain is no longerconsidered a top-20 market by EY.

    Ireland dropped two places to27th as the prospect of clinchinga wind-export deal with Britainthis year fades.

    UK and Germany losingtheir offshore advantage

    EWEA OFFSHORE 2013

    RECHARGEVISIT US AT STAND 30F34

    PRODUCER OF THE EWEA OFFSHORE DAILIES

    VIEW FROM THETOP: Nick Clegg isdeputy prime ministerin a UK governmentthat is deeply dividedover offshore wind

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    Please come visit us at stand 31B60 and hear about theHigh Performance Concrete (UHPC) solutions for grouted connections in wind turbine foundation

    The company supplies Adhesives, Tapes,Sealants, Foundation Systems, Coatings, andother solutions to the Wind Energy Market.

    It has strategic management teams locatedin North & South America, Europe, and Asia.

    Each team, along with their distribution

    partners, can provide local supportanywhere in the world.

    P h o

    t o g r a p

    h | A l s t o m

    DARIUS SNIECKUS

    A lstom has nallyinstalled the worldslargest offshore turbine its 6MW direct-drive Haliadewith a 150-metre-diameter rotor off the Belgian coast.

    Te French manu acturer hadoriginally hoped to erect theturbine at the Belwind wind armby the end o last year, but theproject slipped to April and thenJuly due to bad weather, be orethis weeks latest attempt.

    Tis project with Belwindasserts our technologicalleadership and our innovativeabilities, says Alstom Wind senior vice-president Al onso Faubel.

    Built at Alstoms Saint-Nazaireabrication yard on the Loire

    Estuary in Brittany, northwestFrance, the 1,500-tonne Haliadeis being trialled atop a 25-metre-tall our-legged steel jacket, aferinstallation by Fred OlsenWindcarrier vessel Bold Tern .

    Its rotor carves out a swept areao 17,860 square metres, andAlstom calculates that the

    turbine has a 15% better yieldthan rival 6MW models.

    A consortium led by EDFEnergies Nouvelles and DongEnergy, with Alstom as its

    industrial partner, has 2bn($2.7bn) plans or the threeFrench offshore zones totalling1.43GW that it won last year.

    Alstom is also signed up to

    supply a Haliade or the UKEnergy echnology Institutesoating tension-leg plat ormdemonstrator, to be installed offsouthwest England.

    EWEA OFFSHORE 2013

    Alstominstallslargestoffshoreturbine

    RISING POWER:The 6MWHaliade 150 in

    place at Belwind

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    Sharing is Caring: Wind Energy &Other Sea Users09:00 - 10:30 (Panorama 1)With offshore wind growing apaceon a global level, the installation andoperation of wind farms poses achallenge to other uses of the marinespace, especially in Europe. Suchchallenges can lead to conicts orto benets, depending on how theyare addressed. Here we discuss thepotential for cooperation between theoffshore wind industry and other seausers (sheries and other renewabletechnologies).

    Risk business? Managing theEnvironmental Impact of OffshoreWind11:00 - 12:30 (Panorama 1)During this session, delegates willlearn about different approaches toassessing the marine environmentaleffects of constructing andoperating offshore renewable energydevelopments. The session exploresthe issues from a range of viewpoints,covering regulatory/policy; industryand wider stakeholder perspectives.

    Grid-Integration Issues for OffshoreWind Power11:00 - 12:30 (Panorama 3)Broader technical grid-integrationissues are addressed, including gridconnection requirements specicallyfor offshore wind power plants, DCtechnology and related items. Alsounder discussion, is the ENTSO-EHVDC network code that is currentlyunder development.

    Happening today

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    Come to our Careers Day if youre:l concerned with recruitment issues

    and would like to contribute to thedebate

    l

    working in human resources andlooking for recruitment solutionsl looking for a job in the offshore wind

    sectorl want to know more about market

    trends and training opportunities inthe offshore wind sector

    l working at a university and able tooffer study programmes for studentsinterested in the offshore windsector

    The Careers Day at EWEA Offshore2013 will centre around the followingevents and activities:

    Employment and skills seminar09:00 - 10:30 (Room Kontrast, Hall 3via east)The session will look at new

    challenges and opportunities in thearea of employment and skills, how tosecure retention of trained personneland facilitate transferability of skillsfrom similar sectors

    Matchmaking and HRadvisory services10:00 - 15:00 (Restaurant Trilogie,Hall 3.1)Greensh organises free-of-charge HRadvisory services in order to answercompanies HR-related questions andadvise candidates/employees on theircareer path.

    Exhibition visiting time14:00 - 15:30Last chance to meet with the 400+leading companies of the offshore

    wind industry and further developyour business opportunities with yourfuture partners.

    Careers Day

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    Think bigger

    Take the lead at sea with the new V164-8.0 MW. Itsexceptional size and performance specically designedfor offshore, reduces your electrical infrastructurecosts by allowing more power generated by fewerturbines. Providing the lowest cost of energy from yourwind power plant.

    164 metre rotor : The massive rotor maximizes yourenergy yield from the wind resulting in greater annualenergy production.

    Optimizing park cabling : Offering you from 33 kV up to66 kV output voltage level allow you to fur ther optimizethe inter-array electrical infrastructure of your powerplant, resulting in fewer cables and less electrical losses.

    Reduced transportation : Fewer V164-8.0 MW windturbines can produce your required amount of energy reducing transportation and installation capex costs.

    To take the lead with a dedicated offshore turbine,visit vestas.com

    A gigantic 164 metre rotor tailored to lower yourelectrical infrastructure costs in offshore wind energy.A bigger rotor equals a Lower Cost of Energy.

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    Unreasonable demands by

    the shing industry areadding hugely to the costof the UKs offshore windprogramme, claims a subseacabling expert.

    Te main reason ineld cablesare buried at offshore wind farmsis to protect them from shing vessels that drag equipment alongthe seabed an environmentallydamaging form of shing.

    Antony Zymelka, director ofthe Zytech Subsea Cablesconsultancy, says prohibiting suchtypes of shing within offshore

    wind zones would give developersthe option of not burying ineldcables, or perhaps burying themin shallower trenches, whichwould be cheaper to dig.

    On a typical 100-turbine[offshore wind project] youdimmediately save tens of millionsof pounds on installation,Zymelka told a conference inLondon.

    Array cable installation andburial at offshore wind farms is amajor growth avenue for

    companies such as the

    Netherlands Visser & SmitMarine Contracting (VSMC),Norways Reef Subsea and since its acquisition of GlobalMarine Systems (GMS) last year Italys Prysmian.

    VSMC laid 202km of in-eldcabling at the 341-turbineLondon Array, nearly 90% ofwhich was buried.

    Te UK Crown Estate estimatesthat the array cable-layingprocess adds 60m ($96m) to thecost of a 500MW offshore windfarm, at a time when bringing

    down costs is crucial.

    Making this expenditure evenmore wasteful is the reality thattrawlers typically avoid offshorewind zones anyway, not becauseof the subsea cables (which areburied and therefore not a threat),but because of the dangers posed

    by the turbines, Zymelka says.Its a consents and permittingissue for the offshore windindustry, in that shermen andtrawlers dont want to beprohibited from doing theirbusiness within offshore windfarms, he adds.

    It seems always to be the casethat wherever we happen to belaying cables turns out to be theirfavourite shing grounds. But atthe moment they dont do theirbusiness in there anyway.

    Te Crown Estate, which owns

    the UKs seabed, does not own

    the countrys shing rights,complicating any possible move toshake up the system of allocations.

    Zymelka acknowledges that asturbines grow larger, so does thespace between them, offering abroader scope for shing within

    wind zones.But he points out that withmany European sheries alreadyseverely depleted, shing withinwind zones could be limited tomore environmentallysustainable methods, such as lineshing. Local shermen, in theirrelatively small boats, would bewelcome. Teyre not going todamage any cables that happento be on the [seabed] surface.

    GMS veteran John Davies, nowbusiness development managerat Canyon Offshore, agrees that

    in some cases burial work hasbeen excessive, but says a blanketmove towards no burialwhatsoever would be swingingtoo far in the other direction.

    Each project should be evaluatedin its own right, Davies believes.For example, the biggest threat tocables at Eneco and EDFs futureNavitus Bay project, near the Isleof Wight off southern England,would probably not come fromshermen, but from anchorsthrown over the side of yachts.

    Fishermen are adding a huge burden tothe UK offshore wind industry in excesscabling costs, reports Karl-Erik Stromsta

    Cable rms shing for a solution

    EWEA OFFSHORE 2013

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    SURFACE TE NSION :The cable-layingprocess can addnearly $100m to the

    cost of a 500MWoffshore wind farm

    THERES A CATCH: Thewind industry wants tochange fishing practices

    EWEA OFFSHORE 2013 | DAY THREE

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    Alpha Ventus has not hurtmarine life, BSH study nds

    BERND RADOWITZ

    A groundbreaking ve-yearstudy on the ecologicalimpact of the AlphaVentus offshore project hasconcluded that there were nonegative impacts on the marineenvironment yet manypositive ones.

    Fears of a depopulation of themarine fauna or massive deathsof birds proved to beunfounded, says Germanysfederal maritime andhydrographic agency, BSH,which gives out permits for thecountrys offshore wind projects.

    Tat is good news for thefurther development [of offshorewind], says BSH presidentMonika Breuch-Moritz, who ledand co-ordinated the research.

    o the contrary, articial reefshave formed at the 12 foundationsat Alpha Ventus, where mussels,sea anemones and starsh havesettled.

    With specialised sonarequipment, the researchers alsofound out that the abundance ofmarine life is actually increasing,with sh species moving into thearea that hadnt been therepreviously, such as mackerel andthe longspined bullhead.

    Te rotation of the blades seems

    to drive away birds, anddevelopers do not have to worryabout xed migration routes there are none in the North Sea,the researchers discovered, as thecreatures are not bound to restareas or specic thermalconditions. Tere was also noimpact on marine mammalsduring operation. During theinstallation process, however, theendangered harbour porpoise

    kept a 15-20km distance fromthe construction site.

    Researchers found out that themammals will return to the areafaster if they were driven away by

    sonar signals before piling began,and if effective sound protectionmeasures were in place duringconstruction.

    Following the ndings, theBSH has stipulated that soundlevels must not exceed 160decibels within 750 metres ofconstruction sites. Te BSHexpects this regulation to beintroduced as a guideline acrossthe EU.

    SMOOTH SAILING:REpower turbinesat Alpha Ventus

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    DARIUS SNIECKUS

    Te Energy Research Centreof the Netherlands (ECN) isgearing up for offshore tests of anew active wake control systemthat has been shown to boostoutput from land-based windturbines by as much as 5%.

    rials on a quintet of Nordex2.5MW machines at ECN

    showed the technology, whichwould help a wind farmdeveloper optimally positionturbines to smooth the wakeeffects of turbulence, could alsobe expected to trim maintenancecosts by 3%.

    Tis is a solution tosubstantially increase theproduction of the whole windfarm, while also reducing the load

    and maintenance costs, saysECNs Haico van der Heijden.

    Te production capacity ofturbines downwind of the frontrow on a development can dropby 50%, with wake-generatedturbulence increasing loads anddriving up maintenance costs.

    ECN found that by changingthe pitch angle and/or the yawangle of the front turbine by a

    few degrees, the turbulence isdeected, reducing loads andincreasing output fromdownwind turbines.

    Te next step is a large windfarm, preferably offshore. Tat isnot a place where you want toexperiment, which is why wehave waited until the techniquehad proven itself, says Van derHeijden.

    ECN gears up for offshore tests of wake control system

    BREATHINGMORE EASILY: The protectedharbour porpoise

    EWEA OFFSHORE 2013

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    Holmenkollen | 2014

    RECHARGE

    Recharge , the global source for information on therenewable-energy industry, is inviting expressions of interest for itsannual Thought Leaders summit , the rst of which will take placeon 9 January 2014.

    The event, called simply Holmenkollen 2014, will be held at theprestigious Holmenkollen Park Hotel Rica , in the hills above Oslo,and is set to become a key event in the diaries of decision makersin the renewable energy industry.

    Limited sponsorship packages for Holmenkollen 2014 are nowavailable for leading companies that seek high brand visibility andcredibility towards this highly prestigious industry target audience.

    Involvement in the event will give sponsors the opportunity toengage with a unique group of high level opinion makers that areshaping debate and the future direction of the industry. Membersof the Thought Leaders Club include the CEOs of developers,utilities and equipment suppliers, as well as policy makers, industrybodies and investors. The invited participants have been chosen onthe basis of their ability to bring creative ideas to the table andengage with the latest trends.

    Supporting the event as a sponsor will allow you to form a closeassociation with an event that will play a signicant role in settingthe agenda for the industry for the year ahead and show that your

    company is engaged with cutting edge ideas and debate.

    Participants will be able to take part in off-the-record discussionswith industry peers and policymakers, as well as take part in wintersports activities. Sponsors will also be given the chance to hostprivate meetings within the context of the event. In the evening,we will host the annual Thought Leaders dinner, with top-levelkeynote speakers.

    The 100-year-old Holmenkollen Park Hotel Rica has been thescene of international peace talks and is located next to OslosHolmenkolbakken ski jump and the Norwegian Royal Lodge.Featuring a rich architectural heritage and modern conferencefacilities, the hotel will be an ideal environment for top renewablesprofessionals and investors to consider the challenges of theyear ahead.

    For further information regarding our limited sponsorshippackages on offer for this unique event, pleasecontact Commercial Director Angelo Iannellion +47 51 93 97 82 or [email protected]

    Scan me for thelatest informationon the event

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    YEARS ON

    SUPPORTED BY: ORGANISED BY:

    A decade after the EWEA OFFSHORE event took placein Copenhagen, were heading back to the capital ofwind energy. Generate bottom-line results for yourmarketing investment and get exposure to internationaland domestic markets at this upcoming event.

    Hea ergyCOPENHAGEN

    www.ewea.org/offshore2015

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    T he offshore wind industryscampaign to drive downcapital spending to lowerits cost of energy (CoE) could beboosted by honing turbinedesign and certication,according to consultancy DNVGL-Energy.

    More accurate turbinemodelling using the latestso ware tools is being examined,to speed the prototyping ofhigher-output machines bycutting over-engineering,particularly on offshore models.

    If you look back to the earlydays of the industry, you would just apply bigger safety factors tostatic, steady-state calculations,which led to a lot of over-design,says David Witcher, head of theconsultancys turbine

    engineering design tools unit,which includes the Bladedso ware package. Te so ware

    was licensed for the 500th timerecently through a contract withJapanese turbine maker Hitachi.

    What Bladed allows you to dois to optimise every aspect of aturbine design for the real-worldconditions it will operate in, andthat is where the money-savingcomes in. Bladed is as close tothe real world as you can getwithout building your turbine,Witcher adds.

    CoE can be cut using theso ware a Windows-interfaced suite rooted inmulti-body structural dynamics to do everything from shavingoff excess steelin a jacketconcept topreciselybalancing loadsagainstperformance fromturbine components.

    Say youre trying to dosomething clever with your

    controller using algorithms toactively reduce the loads,increase the damping and so on,then Bladed would help youassess how good your controlleris by representing the reality ofperformance and loading on awind turbine design, Witcherexplains.

    Te latest version of Bladed,V4.4, expanded the reach of theso ware to cover oatingturbines, with the aim of clearingthe way for less conservative

    designs by modelling wind andwave loads together.

    Historically, modelling [ofoffshore turbines] has involvedcalculating your wind loads onthe turbine and then takingthose gures and adding them tothe calculations for the waveloading on the support structure whether xed or oating tocome up with your design, saysWitcher.

    Tis coupling together leads tooverly conservative designs.Bladed allows us to model it all wind and wave loads,electrical systems, control

    systems, foundations, soilconditions all in one go.

    Te market geography for

    Bladed licensing is shi ingrapidly, with the half to twothirds accounted for by Chinain recent years being replaced bya healthy spread encompassingJapan, South Korea and Europe.

    Among the new features inBladed V4.5, to be released nextyear, is Lidar modelling, to factorin data streams collected in theeld during operation. DNVGL-Energy is also scoping outdevelopment of the so ware forfarm-wide load modelling.

    More accurate modelling of turbinescould lower capital spend and preventover-design, reports Darius Snieckus

    How Bladed canslice throughoffshore CoE

    BETTER BY DESIGN :Hitachi turbines at aJapanese wind farm.Hitachi has becomethe 500th licenseeof the Bladedtechnology package;below : David Witcher

    EWEA OFFSHORE 2013

    Bladed is as close to the realworld as you can get withoutbuilding your turbine

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    | D N V G L - E n e r g y

    EWEA OFFSHORE 2013 | DAY THREE

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    Photosof the day 1) A delegate gets a massage at EWEA Offshore yesterday; 2) Recharge technology editor Darius Snieckus, right , entertains the speakers at the

    ought Leaders VIP brunch yesterday morning: ( rom lef ) E.ONs MikeLewis, EWEA president Andrew Garrad, DNV GLs Johan Sandberg andSiemens Wind Power chief technology officer Henrik Stiesdal; 3) Taking aturn on EWEAs ight simulator; 4) Stephanie McGregor of ABB chairingthe grids session alongside ( rom lef ) TenneTs Jochen Jung, Jack Wattel ofVSMC, Codan RSAs Truels Kjer, and Alastair Dutton of the UKs CrownEstate; 5) Jesper Andersen, chief executive of Mita-Teknik; 6) ErwinVisschedijk of Blix Consultancy with his wind farm aerial surveillance device

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