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The IEA provides support for international collaboration on energy technology R&D, deployment and information dissemination. These groups function within a framework created by the IEA - the International Framework for International Energy Technology Collaboration. The views, findings and publications of these international groups (formally called Implementing Agreements) do not necessarily represent the views or policies of the IEA Secretariat or of all its individual member countries. OECD Member countries, autonomous OECD non-member countries, intergovernmental organisations, non-governmental organisations and private sector entities may participate. For more information, see our Technology Agreements page.

Wind Energy Systems

The mission of the Wind Energy Systems isto stimulate co-operation on wind energy research and development and to provide high quality information and analysis to member governments and commercial sector leaders: addressing technology development and deployment and its benefits, markets and policy instruments. The Wind Energy Systems Implementing Agreement vision and mission aim to directly contribute to those of the IEA Committee on Energy Research and Technology (CERT), by enabling deployment through reducing costs and overcoming barriers to encourage a diverse, secure and sustainable energy supply. The Agreement has a purpose to produce objective information and analysis that will inform government policy rather than directly generating policy advice. The Wind Energy Systems Implementing Agreement is expanding both internal and external information exchange.It publishes newsletters presenting results from task work, joint actions, recommended practices, analysis of implementation progress and policies are published and described in some public conferences and forums. The Wind Energy Implementing Agreement enables highly informed exchanges on national government supported programmes and findings, and is ideally placed to establish effective collaboration on basic research. As well as government sponsored R&D, considerable effort and resources are spent within the commercial sector through manufacturing industry, developers, consultancy services and in providing the physical infrastructure.The activities of the implementing agreement provides a means for international co-operation that can only accelerate cost reduction and enable more rapid deployment.

Signatories : Australia | Austria | Canada | Denmark | Finland | Germany | Greece | Ireland | Italy | Italy | Japan | Korea, Republic of | Mexico | Netherlands | Norway | Norway | Portugal | Spain | Sweden | Switzerland | United Kingdom | United States | Commission of the European Union | Chinese Wind Energy Association (CWEA) | European Wind Energy Association (EWEA) |
For more information: http://www.ieawind.org

Current Projects (Annexes)

11. Base Technology Information Exchange
To further the development of wind energy conversion systems through co-operative action and information exchange.


19. Wind Energy in Cold Climates
To gather and share information on wind turbines operating in cold climates.


23. Offshore Wind Energy Technology Deployment
To sponsor focused workshops and develop research tasks to advance development of wind energy systems offshore.


24. Integration of Wind and Hydropower Systems
To conduct cooperative research and provide information exchange on the generation, transmission, and economics of integrating wind and hydropower systems.


25. Design and Operation of Power Systems with Large Amounts of Wind Power
To facilitate wind energy penetration within electricity power systems by analyzing and further developing the methodology to assess the impact of wind power on power systems.


26. Cost of Wind Energy, Analysis of the Cost of Energy from Wind Systems
Objectives: 1) To agree upon and develop an understanding on the cost components of onshore and offshore wind electricity generation, specifically quantifying and documenting expenses such as operational, maintenance and replacement costs, turbine cost trajectories, and assessing the impacts of specific performance parameters on overall plant production. 2) To develop and propose an internationally accepted method for calculating the cost of energy for wind systems and the resulting cost of energy from wind energy projects that can be used by the International Energy Agency, internally and externally, and other organizations. 3) To derive, if possible, the learning curve for wind energy, which allows Governments and the research community anticipate the future trends of wind generation costs. 4) To design a methodology that helps identify the major cost drivers of wind energy. The analysis of such drivers is also useful for selecting which are the areas in which RD&D activities can have a larger impact on cost reduction. 5) In a later stage, the outcomes will be used to compare the cost of wind energy with those of other electricity generation technologies, making sure that the underlying assumptions used are compatible and not biased against a particular source. 6) The cost of wind energy will also be used to calculate the value of wind energy. A tentative list of factors could include: contribution of wind generated electricity to reduce greenhouse gas emissions, impact of wind in decreasing electricity prices, and contribution of wind in decreasing the overall risk of the energy system. The last two objectives described will be carried out following the accomplishment of the initial four, and are foreseen for the third year of implementation of this task. Means to achieve objectives: Identification and assessment of existing methodologies for estimating the cost of wind energy Development of a draft methodology for IEA Wind use Identification of learning curves for the cost of wind energy Comparison between the cost of wind energy and that of other electricity generating technologies Development of a draft methodology to assess the value of wind energy Communication, outreach, and informational exchange Expected results: An understanding of the wind energy cost system A methodology that can be applied by the IEA and other international and national organizations to assess the cost of wind energy A more appropriate comparative analysis of the cost of wind energy in comparison with those of other technologies A first approach to the social value of wind energy.


28. Social Acceptance of Wind Energy Projects
The work under this Annex will produce a state-of-the-art report on the knowledge and results so far on social acceptance of wind power installations, including a list of studies and online library of reports and articles. The participants will establish “Best Practices” and tools for policy makers and planners to reduce project risks due to lack of social acceptance, accelerate time of realisation of projects, accelerate the exploitation of the full potential of wind energy in the concerned countries, and establish strategies and communication activities to improve or to maintain the image of wind power. Social acceptance is an often used term in the practical policy literature, but clear definitions are rarely given. We intend to contribute to the clarity of understanding by distinguishing three dimensions of social acceptance, namely socio-political acceptance, community acceptance and market acceptance. Task 28 work will officially start in 2009 and will conduct activities for three years–from 2009 through the end of 2011.


29. MEXNEXT: Analysis of Wind Tunnel measurements and Improvement of Aerodynamic Models
This Annex 29 is the successor of IEA Wind Annex 20. It will use the wind tunnel measurements from the EU project Model Experiments in Controlled Conditions (MExICo) that became available in December 2006. Under this Annex a thorough analysis of the data will take place. This includes an assessment of the measurement uncertainties and a validation of different categories of aerodynamic models (rotor aerodynamics and near wake models, where the latter type of models form part of wind farm models as well). The insights will be compared with the knowledge that was gained from IEA Wind Annex 20 on the NASA-Ames experiment and from other experiments such as wind tunnel measurements from the Technical University of Delft. The time line of the project leads to production of the final report in 2011.


30. Offshore Code Comparison Collaboration Continuation (OC4) Project
A project to compare dynamic computer codes and models used to design offshore wind turbines and support structures


27. Development and Deployment of Consumer Labels for Small Wind Turbines
The primary objective of this new task is to give incentives to the industrial sector to improve the technical reliability, and therefore the performance, of small wind turbines. The intention is to define a globally standardized product label for small wind turbines and minimum requirements for a testing process that would allow a label to be placed on products.


31. WAKEBENCH Benchmarking of wind farm flow models
The aim of this Task is to produce best practice guidelines for wind farm flow modeling from model intercomparison benchmarks. In this Task, participants will verify, validate, and quantify the uncertainties of the most widely used models. A set of validation test cases will be used to benchmark models with increasing levels of complexity. These inter-comparison case studies will produce information to discuss model evaluation strategies that combine field and laboratory measurements in order to identify and quantify best practices for using these models under a range of conditions, both onshore and offshore, from flat to very complex terrain. This benchmarking is an important step to identify the best models and to highlight areas for improvement.


32. Wind Lidar Systems for Wind Energy Deployment
The participants in this research task will: • Exchange experience from research activities and measurement projects on the performance of lidar devices and associated measurement techniques • Continue the development of an “IEA Recommended Practices for Remote Sensing Measurements“ (Action 59th Topical Expert meeting) and refine it during the course of the task in the three areas: a) measurement techniques b) resource assessment c) power curve measurements and load estimation • Identify areas for further research and development as well as standardization needs.


33. Reliability Data - Standardization of data collection for wind turbine reliability and maintenance analyses
Approved in October 2011 this Task will build upon the discussions and work already performed in regards to failure statistics during the 65th IEA Topical Expert Meeting “International statistical analysis on wind turbine failures,” March 2011, Kassel, Germany. The aims are to: • Provide an open forum on failure and maintenance statistics on wind turbines for exchange of experience from individual research projects • Develop an IEA Wind recommended practice for collecting and reporting reliability data • Identify research, development, and standardization needs for collecting and reporting reliability data. Three Subtasks will apply the experience of reliability analyses and failure statistics to determine common terminologies, prepare formats and guidelines for data collection (inventory, maintenance, failure, and possibly condition data), and set up procedures for analysis and reporting. The expected outcome is the formulation of guidelines for data collection, data structure, and data analyses for overall wind turbine failure statistics. The topics are complimentary to teh work being performed to standardize data management.