Offshore blades where it all began

    The world’s first offshore wind farm in Vindeby, Denmark, will be dismantled shortly. After running for 25 years, and with a capacity smaller than just one offshore turbine today, Vindeby is in many ways a symbol of the extraordinary development of the wind industry. The 11 wind turbines each generating 450kw energy were powered by LM 17 HHT blades, a blade designed for onshore and state of the art at the time.

    Søren Andersen and Jesper Månsson, both Senior Directors at LM Wind Power today, qualified the LM 17HHT blades back in the days. Here’s what they remember about this special project.

    “We did have some discussion on whether we should change some of the components on the blades now that they would go offshore, but in the end, we delivered the blades exactly as had they been for onshore,” Jesper says. Søren elaborates: “There are no parts of the blades which are particularly exposed offshore. Leading edge erosion protection is important, but that applies for onshore blades as well.  And even today, there is actually no technical difference between the design of offshore and onshore rotor blades.”

    The design of the offshore and onshore blades may not differ, but the size and power generation has increased significantly. The blades installed in Vindeby in 1991 measured 16 meters. Today, LM Wind Power’s longest blade is 73.5 meters in length, and even longer ones are in the making.

    Designed to last
    When asked whether they are surprised that the blades lasted for 25 years, they both shake their heads. “The blades were designed for 20 years lifetime and we always have a solid safety margin included in the calculations. They were built to last!”, they agree. “But it would be really interesting to get one of the blades and put it through static testing to see how much it can take.”

    By providing rotor blades to the world’s first offshore wind farm, LM Wind Power was conquering new frontiers; something which has repeated itself several times in the company’s history not least offshore. The offshore industry started with the small project in Vindeby, but it would take another decade before LM Wind Power delivered the next big batch of offshore blades in 2001, this time to ‘Middelgrunden’ off the coast of Copenhagen. By then, the blades were more than double the size at 36.8 meters, powering 20 2MW turbines. Middelgrunden Offshore Wind farm was for years the largest offshore wind farm in the world. And still built to last.

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    19-04-2018 13:06:50 | twitter

    LM Wind Power

    .@LMWindPower blades from 🇹🇷 ➡️ 🇦🇺 #GEWind https://t.co/RS3LWvFT2F
    12-04-2018 14:53:10 | twitter

    LM Wind Power

    GE's new wind turbine is 260 metres high- how is the supply chain responding?--Read the full article here: https://t.co/WUkgiG5mpe @GErenewables @LMWindPower #windpower #wind https://t.co/wnDBR5UGkJ
    10-04-2018 16:51:32 | instagram
    First stop in the @generalelectric Haliade 150-6MW #WindCycle: blade production. At our factory in Castellón, #Spain, we made the 198 LM blades that will eventually spin at #Merkur offshore wind farm. Each blade is 241 feet (73.5 meters) long and 27 tons, helping the turbine generate 6 MW of energy. Photographer @nicanorgarcia captured a worker finishing the surface of a blade. #WeKnowBlades #LMplaces #lmwindpower #greenbusiness #wind #windworks #windturbine #windturbines #renewables #windpower #windenergy #renewableenergy #cleanenergy #future #sustainability #Haliade #GE #engineering
    10-04-2018 08:44:20 | linkedin

    LM Wind Power

    We're reflecting on the #WindCycle this week! Follow on Instagram as a GE Haliade 150-6 MW wind turbine comes to life, starting with these LM 73.5 meter blades manufactured in Castellon, Spain. Photo credit: @nicanorgarcia #WeKnowBlades http://fal.cn/LMinstagram
    10-04-2018 08:36:17 | twitter

    LM Wind Power

    Reflecting on the #WindCycle this week with @generalelectric on @instagram! Follow a GE Haliade 150-6 MW wind turbine as it comes to life, starting with these LM 73.5 meter blades from Castellon, Spain. Photo credit: @nicanorgarcia #WeKnowBlades https://t.co/vpQzPBru9v
    09-04-2018 19:03:15 | instagram
    We’re reflecting on the #WindCycle this week with @generalelectric! Follow a GE Haliade 150-6 MW wind turbine as it comes to life, starting with these LM 73.5 meter blades manufactured in #Castellon, #Spain. Photo credit: @nicanorgarcia #WeKnowBlades #LMplaces #lmwindpower #greenbusiness #wind #windworks #windturbine #windturbines #renewables #windpower #windenergy #renewableenergy #cleanenergy #future #sustainability #Haliade #GE #engineering
    05-04-2018 10:05:02 | linkedin

    LM Wind Power

    On March 18, LM Wind Power won the 2017 Technical Support Award at Goldwind’s ninth-annual supplier conference! Learn more about this milestone in the close partnership between our technical teams. #WeKnowBlades
    05-04-2018 09:20:19 | twitter

    LM Wind Power

    Reaping the wind with the biggest turbines ever made - @GErenewables HaliadeX #offshorewind turbine and @LMWindPower blades featured in report from @BBCNews. https://t.co/00Ks2IEm72 https://t.co/TKfWObyptH
    05-04-2018 07:52:01 | twitter

    LM Wind Power

    On March 18, LM Wind Power won the 2017 Technical Support Award at Goldwind's ninth-annual supplier conference! Learn more about this milestone in the close partnership between our technical teams: https://t.co/af3j6sa2hf #WeKnowBlades https://t.co/JcwsxlulxL
    04-04-2018 06:55:32 | twitter

    LM Wind Power

    "Breathtaking" - That's how @BBCNews describes the scale of our 88.4 meter wind turbine blades. Read this in-depth look at how we manufacture and test the world's longest blades: https://t.co/spXw5zfW4l #WeKnowBlades https://t.co/glk9MBmwOH
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