Offshore wind farms are significantly different from onshore wind farms. Working in the water environment requires a different project management approach, a different risk analysis and higher demands in terms of Health, Safety and the Environment. Our team has extensive experience with offshore wind farms globally. Our knowledge base has been extended by developing, constructing and operating the Westermeerwind Wind Farm and by project managing Block Island Wind Farm, the first offshore wind farm in the USA. We are expanding our experience and knowledge base through the development or Windpark Fryslân. Ventolines offers its services to clients in the offshore wind energy industry, stretching from development through to the operational stage.
The development of offshore wind farms requires extensive knowledge and experience in the field of permit and stakeholder management. It is also important to successfully complete wind studies, wind measurement campaigns, grid connection processes and wind farm layouts. Through Westermeerwind and Windpark Fryslân, Ventolines has acquired the skills and experience to actively manage the interaction between all project phases and activities.
Contracting and financing
A wind project often involves dozens of contracts to arrange things properly. Think about, for example, agreements between lenders and borrowers, agreements with various contractors, designers and managers, a Power Purchase Agreement, building permits and grid connection contracts. Ventolines can advise you on the contract strategy and negotiate optimal contracts for your projects, not only pre-construction, but also during the construction and operational phases. Ventolines also advises its clients on financing, equity and public participation structures and can clearly identify the participation options. The Ventolines team has its own financial, contracting and technical experts that can provide complementary advice about financial questions.
Ventolines provided overall management for the Westermeerwind Wind farm. Activities included inspections, project management, site management and contract management.
Ventolines has an experienced asset management organization with significant knowledge about wind turbines, service providers and contracts. Our team carries out technical inspections of the wind turbines, and assesses the technical status and quality of maintenance. In addition, Ventolines uses an advanced wind farm management and monitoring system. Through ongoing and effective turbine performance monitoring, and proactive project and quality management, Ventolines ensures optimal performance of your wind farm. In addition to technical management, Ventolines can also take care of the commercial (contract management) and financial management of your wind farm.
If you want to know more about onshore wind energy, contact Thibaut de Groen
Wind assessments and wind measurement campaigns
Analysis of the wind resource on- site is of great importance to determine the appropriate turbine type and set-up. Initially, this analysis can be carried out on the basis of existing wind measurements from nearby KNMI weather stations and/or production data from existing wind turbines in the area. This will provide an overall overview of the wind resource at the site of the proposed wind energy project. For further assessment, it is recommended to carry out a wind study. By carrying out on-site wind measurements with a measurement mast and/or Lidar (Ventolines owns 2 Lidars), the wind resource can be determined more accurately. A measurement campaign of several months to a year is usually sufficient to accurately determine the wind resource. A long-term reference, measurement data from the KNMI weather stations for instance, is used to correct the measurement data for seasonal effects and year-on-year variations. In this way, a multi-year average of the wind resource can be determined. The longer the measurement campaign the better the correlation of the measurements with the long-term reference, and the greater the certainty with which the wind resource can be determined. An accurate yield calculation is important for favourable financing conditions. If you want to know more about this, please contact Ardaan Walvis
Yield calculations and wind farm layout
In the early phases of a wind energy project, it is often difficult to accurately measure the wind resource. However, it is possible to offer a forecast of the expected annual output for the various turbine types and set-up variations to be examined, based on the overall wind resource. After the completion of the wind study, accurate yield calculations can be performed. A distinction should be made here between a P50 yield calculation, which returns the expected average yield, and a P90 yield calculation. The latter provides the yield that will be achieved on an annual basis with 90% certainty, and is particularly important for financing. A good wind study reduces uncertainties and thus results in a higher P90 yield. This brings down the cost and complexity of project financing. The P50 yield calculation is used to determine the SDE+ subsidy that can be requested for the project. Based on the location study and an analysis of the wind resources, a number of park designs can be prepared in order to examine various turbine types and set-up options. Depending on the wind resource, the turbine types must meet certain wind categories. The relative distance that must be maintained between the turbines depends for an important part on the rotor diameter. As such, it can be desirable to take into account the different possible arrangements in the park design, in which the distance between the turbines is different. This also takes into account the developments that can affect the future supply of turbine types. The park designs can serve as base alternatives that are examined in the MER. If you want to know more about this, please contact Ardaan Walvis
Nourished by the areas of expertise that are called upon in each project phase our legal department is uniquely positioned to offer stand-alone legal advice and structuring solutions to clients active in the renewable energy sector. Should you wish to receive further information, please contact Elisabetta Aarts
Financial feasibility of a wind energy project is examined through a financial model specifically developed for this purpose by Ventolines. Yield calculations are used as input for the expected revenues from the sale of electricity and the subsidy. Initially, the costs are calculated based on a number of assumptions. The costs for a wind turbine and the foundation, as well as the maintenance costs, vary per wind turbine product and turbine type. Location-specific conditions affect, for example, the grid connection cost and the land lease costs. The model output will become increasingly accurate by increasing the certainty and accuracy of model inputs, such as the final turbine type and cost, final layout and quotations for, for instance, balance of plant costs. If you want to know more about this, please contact Casper Sparreboom
Power Purchase Agreements offer various options with varying risk strategies. Ventolines offers insight into the various financing options associated with PPAs or other forms of electricity sales. If you want to know more about this, please contact Casper Sparreboom
During the financing stage, sales process or purchase of project rights stage, it is important to carefully map out the financial feasibility and strength of a project, through an analysis of the permits and contracts. Open ends in a project can be identified and resolved. Ventolines can execute this trajectory and valuate the project, including an analysis of the (projected) cash flows. If you want to know more about this, please contact Bart Ummels
Any defects need to be resolved as quickly as possible. Ventolines can take care of the full repair process for the client, from the moment the defect occurs until the completion of the repair. By utilising our expertise, our client can devote their time and attention to other matters while assured of an optimal and efficient repair process. Activities include: contact with insurers, requesting repair proposals, and guiding the dismantling and the repair processes. If you want to know more about this, please contact Wytse van der Kolk
Ventolines can manage and monitor contracts, and by closely supervise the construction works. This enables you to allocate your time and effort to other activities. If you want to know more about this, please contact Thijs Afman
Ventolines ensures close supervision during construction. This includes foundation construction, the construction crane positions, construction roads and park cabling, but also safety and quality inspections. If you want to know more about this, please contact Thibaut de Groen
Before clients decide to officially accept the wind turbines from the suppliers, Ventolines will inspect the quality and completeness of the wind turbines and other works. If you want to know more about this, please contact Bart Ummels
After all relevant contracts are signed, they are actively managed and monitored. Ventolines guards the quality of the work during the execution. This is achieved through close supervision during construction. In the event of different opinions on the execution, the contract prevails. Good supervision of the proper performance of all contractual provisions is of great importance not only to the owner, but also to the project funder. Unforeseen issues must be resolved and well recorded. Ventolines acts as the link between the clients and the contractors, the project owners and the lenders. The team at Ventolines has extensive experience managing contracts, both onshore and offshore.If you want to know more about this, please contact Wytse van der Kolk