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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    15-01-2019 12:00:38 | linkedin

    We've installed a total of 1.7 GW of offshore wind capacity - that's equivalent to powering 28 million light bulbs! Learn more about our offshore track record: https://www.lmwindpower.com/en/products-and-services/blade-types/go-offshore-lm-wind-power
    15-01-2019 12:00:36 | twitter

    We've installed a total of 1.7 GW of offshore wind capacity - that's equivalent to powering 28 million light bulbs! Learn more about our #offshore track record and why #WeKnowBlades: fal.cn/rLvy
    15-01-2019 12:00:00 | instagram
    Did you know - we've installed a total of 1.7 GW of offshore wind capacity. That's equivalent to powering 28 million light bulbs! #LMplaces #lmwindpower #Offshorewind #greenbusiness #wind #windworks #windturbine #windturbines #renewables #windpower #windenergy #renewableenergy #cleanenergy #future #sustainability
    11-01-2019 14:00:36 | linkedin

    "I admire what a rich resource we have in wind energy. I believe we can have a cleaner world by producing clean energy". Maristela Ruana da Silva is part of the Laboratory Quality team from our Suape plant in Brazil. She takes pride in ensuring that all raw materials and the calibration equipment used for the production process is in perfect condition. It helps us guarantee high quality blades for customer satisfaction. Read on to learn more about how #WeKnowBlades: https://www.lmwindpower.com/en/products-and-services/we-know-blades
    11-01-2019 14:00:33 | twitter

    "I admire what a rich resource we have in wind energy. I believe we can have a cleaner world by producing clean energy". Maristela Ruana da Silva is on the Laboratory Quality team in Suape, Brazil. Learn more about how #WeKnowBlades fal.cn/rW.w
    11-01-2019 14:00:14 | instagram
    "I admire what a rich resource we have in wind energy. I believe we can have a cleaner world by producing clean energy" - Maristela Ruana da Silva is part of our Laboratory Quality team in #Suape, Brazil. She is always looking to ensure that all raw materials and the calibration equipment used for the production process is in perfect condition. #WeKnowBlades #LMplaces #lmwindpower #Brazil #greenbusiness #wind #windworks #windturbine #windturbines #renewables #windpower #windenergy #windfarm #renewableenergy #cleanenergy #future #sustainability #engineering
    07-01-2019 12:00:20 | linkedin

    Our global presence means we can serve our customers in all established and emerging wind markets. A recent visit to our Indian plants in Vadodara and Dabaspet, as well as our Technology Center India, gave the executive management team a great opportunity to see how our colleagues are ready to meet the demands of future growth! Learn more about how #WeKnowBlades https://www.lmwindpower.com/en/products-and-services/we-know-blades/global-presence
    07-01-2019 12:00:16 | twitter

    Our global presence means we can serve our customers in all established and emerging wind markets. A recent visit to our plants in India gave the executive management team a great opportunity to see how our colleagues are ready to meet the demands of future growth! #WeKnowBlades
    04-01-2019 13:09:29 | twitter

    Offshore turbines have grown 30 times in #Denmark over the past 25 years and is expected to grow even more with falling #LCOE as a result. From 0,45 MW to 13-15 MW! #windpower #renewables #renewableenergy #windworks #windturbines
    21-12-2018 10:56:30 | instagram
    As many LM Wind Power colleagues gear up for the holiday season, our very own Sustainable Santa wants to share some of our key highlights of 2018! http://www.sustainable-santa.com #CleanLM #lmbalance #WeKnowBlades #LMplaces #lmwindpower #greenjobs #Balance #greenbusiness #wind #windturbine #windturbines #renewables #windpower #windenergy #renewableenergy #cleanenergy #sustainability #CaseForWind
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