offshore wind turbine Articles

  • The effect of ocean waves on offshore wind turbines

    The Ocean has a varying surface roughness where the roughness length is determined by the characteristics of the waves. In this paper, a method is established where the roughness length of the ocean is calculated from the wind speed and the fetch length. The fetch length depends on the wind direction and a case study is performed for a wind turbine exposed to wind blowing in two opposite ...


    By Inderscience Publishers

  • Measuring Offshore Wind Resources

    To select the right offshore wind site, estimate the future energy output of a wind farm, and determine the best layout for the turbines, project developers must conduct wind resource assessment (WRA) campaigns on site. This is a critical phase of the successful development of wind farms. WRA campaigns on terrestrial sites have traditionally been performed using meteorological towers equipped ...


    By Renewable NRG Systems

  • Multi-megawatt wind turbines for offshore use: aspects of Life Cycle Assessment

    Life Cycle Assessment (LCA) is an instrument to quantify environmental impacts of the entire energy supply chain. According to the LCA, an appropriate indicator system should comprise all steps of a system's life cycle: production, operational and disposal processes ("cradle-to-grave"). Cumulative Energy Demand (CED) might be seen as one part of LCA as far as the depletion of energy resources in ...


    By Inderscience Publishers

  • Wind turbine controlling of the future

    Higher, more robust, more reliable: Parallel to the growing requirements for wind turbines, the requirements for monitoring sensors grow as well. But how can wind sensor manufacturers fulfil these wishes? And how should a future wind sensors look like? After analysing the current conditions and trends on the wind energy market, our CEO Klaus Hirzel compiled a wish list for future wind sensors. ...

  • 2013 to be Record Year for Offshore Wind

    Offshore wind power installations are on track to hit a seventh consecutive annual record in 2013. Developers added 1,080 megawatts of generating capacity in the first half of the year, expanding the world total by 20 percent in just six months. Fifteen countries host some 6,500 megawatts of offshore wind capacity. Before the year is out, the world total should exceed 7,100 megawatts. Although ...


    By Earth Policy Institute

  • Prospect of offshore wind energy development in Japan

    In Japan, the cumulative capacity of wind turbine generation systems on land has increased steadily in recent years. To install a large number of wind turbines has inherent problems such as shortage of suitable land, and inadequate infrastructure such as power cables and roads. The necessity for development of offshore wind turbine generation systems has been recognised based on the above ...


    By Inderscience Publishers

  • Logistics Planning in Offshore Wind Farm Development

    “In the offshore wind power industry, logistics planning is the dominant driver to avoiding costly mistakes,” highlighted Jim Lanard, President, Offshore Wind Development Coalition. The technologies needed to set up offshore wind farms are available in the US, and what is needed the most is a focus on logistics that would make them happen efficiently, he added.  A speaker at the ...


    By Marcus Evans

  • Gamesa, Northrop Grumman to collaborate in offshore wind

    Spanish wind technology giant Gamesa and U.S. defense contractor Northrop Grumman (Los Angeles, CA) have signed an agreement under which the two companies will collaborate in the development of technologies for offshore wind facilities. Under the terms of the agreement, Northrop Grumman Shipbuilding will apply its experience in heavy load logistics, systems performance, and reliability ...

  • Tidal influence on offshore wind fields and resource predictions

    The rise and fall of the sea surface due to tides effectively moves an offshore wind turbine hub through the wind shear profile. This effect is quantified using measured data from three offshore UK sites. Statistical evidence of the influence of tide on mean wind speed and turbulence is presented. The implications of this effect for predicting offshore wind resource are outlined.Keywords: Tidal, ...


    By Inderscience Publishers

  • Innovation risk slows offshore wind foundation development

    As offshore wind technology develops ever more gigantic machines further from shore into deeper waters, it is common wisdom that new foundation technologies are needed. But are they? Monopile, and some jacket foundations, still dominate the offshore wind market in commercial operation. Prototype floating foundations are performing well in demo or pilot projects, but scaling up is only ...

  • Offshore Wind Development Picking Up Pace

    Wind power is the world’s leading source of renewable electricity, excluding hydropower, with 238,000 megawatts of capacity installed at the start of 2012. Thus far, almost all of this wind power has been tapped on land; worldwide just 4,600 megawatts of offshore wind farms were operating as of mid-2012. Offshore wind capacity is growing quickly, however, expanding nearly six-fold ...


    By Earth Policy Institute

  • Life cycle assessment of a 150 MW offshore wind turbine farm at Nysted/Roedsand, Denmark

    The purpose of this life cycle assessment (LCA) was to illuminate and describe the potential environmental impacts caused by an offshore wind turbine farm (WTF) throughout its lifetime and use this knowledge in the planning and improvement of future WTFs. The LCA was based on experience from the LCA on Danish electricity and district heating [1] as well as the offshore WTF project at ...


    By Inderscience Publishers

  • Maintenance Manager to control operation and maintenance of offshore wind farms

    Maintenance of wind farms is of increasing importance. Especially in remote areas, where logistics and accessibility are restricted, costs of preventive as well as corrective maintenance form a substantial part of the costs of electricity. The importance of a tool that assists in feedback to the design, failure logging, configuration control and maintenance planning is evident. This paper ...


    By Inderscience Publishers

  • Offshore wind installation vessel capacity to tighten after 2020

    The existing fleet of turbine and foundation installation vessels is well suited to serve the European offshore wind market in the short and mid-term but it will not be sufficient to support installation demand after 2020, Michael Guldbrandtsen, senior consultant at MAKE Consulting, told Wind Energy Update. The next 2-3 years will continue to be dominated by orders for jack-up ...

  • Renewable energy production issues with the Cape Cod offshore wind energy programme

    This paper evaluates the first offshore wind farm proposal in the USA. It is being put forward by Cape Wind Associates, a Boston-based firm that wishes to build 170 turbines five miles offshore in Nantucket Sound. The proposed development would supply up to 95% Cape Cod's energy needs and 2% of the energy requirements for the eastern New England region, preventing the need for additional fossil ...


    By Inderscience Publishers

  • Record 13bn euro invested in offshore wind in 2015: 3GW new capacity

    Offshore wind investments in Europe doubled in 2015 to €13.3 billion in a record year for financing and grid-connected installations.   A total of 3,019 MW in new offshore wind capacity came online in European waters in 2015, more than double what was connected to the grid in 2014. Europe's total offshore wind capacity is now 11,027 MW. A further 3,034 MW of capacity - spread across ten ...


    By WindEurope

  • GE, Harbin form joint venture to market wind turbines in China

    GE Energy (Atlanta, GA) announced that it has formed a joint venture with China’s Harbin Electric Machinery (HEC) to produce GE-designed wind turbines for sale in the Chinese wind energy market. Anticipating a six-fold increase in China’s wind power capacity by 2020, the joint-venture company will produce turbines for both terrestrial facilities and offshore wind farms. GE ...

  • Offshore windpower: a major new source of energy for Europe

    After several decades of theoretical developments, desk studies, experimental wind turbines and prototype wind farms, the first large-scale commercial developments of offshore wind farms are now being built. To support and accelerate this development, the European Commission funded a project, "Concerted Action on Offshore Wind Energy in Europe" (CA-OWEE), which aimed to gather, ...


    By Inderscience Publishers

  • Monopiles to remain Dominant Offshore Foundation in Europe: Consultant

    Monopiles will be Europe’s dominant offshore wind foundation for the next five years despite increasing turbine capacity, Tim Fischer, Head of Wind at German consultancy Ramboll, said. Monopile projects have dominated the offshore wind market but windfarms are moving towards larger turbines requiring larger foundations. While many proponents are promoting ...

  • The Future Cost of Wind Power

    Chapter 1 The economics of wind power Wind power is capital intensive with most of the investment required upfront. The largest capital cost component is the turbine itself which can account for between 40% and 80% of the total capital cost of an onshore wind installation. Costs offshore are higher because of the more expensive operating environment and the greater difficulty establishing ...

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