The World's #1 Renewable Energy Network for News, Information, and Companies.
Untitled Document

GE Confirms Offshore Turbine Details

In the wake of the September 2009 acquisition of ScanWind, GE has confirmed some design details of its forthcoming offshore wind machine, which is set to mark the company's substantive entry into the offshore arena.

Speaking at the company’s ‘The future of alternative energy summit’, Stephan Ritter, GE Energy’s general manager for Renewable Energy Europe, confirmed a larger rotor diameter than the current 90.6 metre design and a power rating of some 4 MW. This compares with a 3.5 MW rating on the existing ScanWind models.

The variable pitch, direct drive machine will feature a permanent magnet generator, avoiding the use of a high speed gearbox. Ritter says the top head mass (THM) of around 250 tonnes is competitive with other manufacturers’ current designs.

Although still coy with regard to the exact name plate capacity, Ritter did acknowledge that the machine would be “a bit bigger”, than the existing design with an up-rated generator, “It’s going to be around 4 MW”, he said, observing: “More importantly, it’s going to have a bigger rotor.”

Ritter explained that the company intends to take proven elements of the existing ScanWind design, add GE technology proven on the company’s 1.5 MW and 2.5 MW machines “load controls, for example”, and combine them into a product that “we think is pretty compelling.”

ScanWind has an operational track record of more than six-years with the first 3 MW prototype erected during March 2003 in Nærøy on the Norwegian coast. Today some 15 machines in various configurations have been installed and are operating onshore, 11 of which feature generators supplied by Finnish company The Switch. Indeed, Ritter noted that this track record was one of the reasons why GE acquired the company, saying, “We didn’t just want to buy a design but we wanted to buy a track record with it.”

Testing of the larger rotor diameter version is due to begin this year with an onshore installation before the design is tested offshore in pre-commercial installations of perhaps two to four turbines. In a staged development, Ritter says the company plans further pre-commercial developments with 10 to 15 units and in 2013 the company expects to use the turbine in its first fully commercial offshore installation of the 50-100 turbine + scale.

The company’s move into offshore has long been anticipated and Ritter went some way to explaining the company’s previous reticence by pointing to the difference in maturity between the onshore (some 40 GW installed) and offshore (around 500 MW installed) wind sectors, saying that GE had focused on those areas which displayed the greatest growth, in this case the onshore wind sector in the US. But, he said, “Now is the time for investment in offshore.”

Emphasising the importance of reliability in the offshore wind arena, Ritter hinted at potential gearbox failure as a factor in its ScanWind decision, saying that direct drive technology was the way forward, particularly in the case of larger turbines of the type more typically associated with the offshore sector. Referring to its earlier foray into the offshore sector using a marinised version of its 3.6 MW onshore machine, seven of which were installed off Ireland’s Arklow bank in 2004, Ritter said that the company no longer intends to pursue development of that machine for offshore applications. Two key lessons had been learned by the company ahead of its decision to re-enter to the offshore market, Ritter said, “One is, don’t take an onshore turbine and put it offshore and the other one is ‘exceed on reliability’, and the belief is that the direct drive is going to rather exceed on reliability.”

Untitled Document

RELATED ARTICLES

LG Chem: Storage Battery Leader

Debra Fiakas The post “Energy Storage Restart,” which was published last week, discussed the efforts by General Electric (GE: NYSE...

Solar Making Big Gains in the Land of the Rising Sun

Vince Font The Land of the Rising Sun is living up to its nickname. According to a new report from the SolarSuperState Associati...

States Already Seek To Delay Clean Power Plan

Andrew Harris, Bloomberg Fifteen states led by coal-rich West Virginia asked a federal court to stall Obama administration rules intended to c...

Stolen Solar Panels and Sabotage A Challenge for Powering India With Renewable Energy

Anindya Upadhyay, Bloomberg Disappointment spread across Tarun Singh’s face when he saw that parts of his solar power microgrid in eastern India’...

PRESS RELEASES

20 days to GRC Annual Meeting & GEA Geothermal Energy Expo

The Geothermal Resources Council (GRC) has announced that it is only 20 days to go to t...

AWS Truepower Announces Major Expansion of its Due Diligence Team in Response to Growing Market Demand

AWS Truepower, an international leader in wind and solar energy consulting and engineer...

Array Technologies’ DuraTrack HZ v3 Continues to (R)evolutionize at SPI

Array Technologies, Inc. (ATI) prepares to showcase its recently launched tracking syst...

Appalachian's Energy Center assists counties with landfill gas to energy projects

The Appalachian Energy Center at Appalachian State University recently completed a proj...

FEATURED BLOGS

How To Get People To Do Stuff

It’s no secret that psychology and sales go hand in hand. If you understand the principles of human psychology ...

Get In The Groove

When we talk about strategies for boosting productivity, we often overlook the fact certain projects lend themselves ...

Transitioning to Net-Zero Living

Judith and Jeffrey adore living in Belfast, Maine – a quaint harbor town of Belfast, Maine. They previously res...

The True Cost of Electric Vehicles in Australia

In order to avoid increased congestion, further greenhouse warming and lessen Australia’s reliance on imported ...

FINANCIAL NEWS

David Appleyard is a contributing editor. A freelance journalist and photographer, he has some 20 years' experience of writing about the renewable energy sector and is based in Europe.

CURRENT MAGAZINE ISSUE

Volume 18, Issue 4
1507REW_C11

STAY CONNECTED

To register for our free
e-Newsletters, subscribe today:

SOCIAL ACTIVITY

Tweet the Editors! @jennrunyon

FEATURED PARTNERS



EVENTS

Doing Business in South Africa – in partnership with GWEC, the Glob...

Wind Energy in South Africa has been expanding dramatically, growing fro...

International Energy and Sustainability Conference 2015

The fourth International Energy and Sustainability Conference will be he...

Wind Operator Congress Europe

The UK’s only business-focused O&M event for the European wind...

COMPANY BLOGS

Clean Energy Patents Maintain High Levels in First Quarter, Solar L...

U.S. patents for Clean Energy technologies from the first quarter of 201...

Fact Check: AWEA represents American wind power

The American Wind Energy Association (AWEA) is proud of its members for ...

Koch Professor drops his Koch title, still makes same errors plus s...

The Koch Professor’s title isn’t the only thing that’s...

NEWSLETTERS

Renewable Energy: Subscribe Now

Solar Energy: Subscribe Now

Wind Energy: Subscribe Now

Geothermal Energy: Subscribe Now

Bioenergy: Subscribe Now  

 

FEATURED PARTNERS