(Redirected from Wind Farms)
Wind Energy Stakeholder Engagement & Outreach Portal
- Small Wind Guidebook
- Wind for Schools Portal
- Community Wind Handbook
- Distributed Wind Resource Assessment Workshop materials
Also on OpenEI, you can find more information about the following topics:
Wind Energy Technologies
The U.S. Department of Energy defines the scale of wind turbine technologies as follows: utility-scale is greater than 1 megawatt (MW) in size, mid-size turbines are 101 kilowatts (kW) to 1 MW in size, and small turbines are up to 100 kW in size. Distributed wind systems are defined as systems connected on the customer side of the meter (to meet the onsite load) or directly to the local grid (to support grid operations or offset large loads nearby). Community wind is characterized by local ownership and control and includes many distributed wind projects. Offshore wind projects, of course, capture the winds off the coasts and convert them to electricity. Learn more about the technology classes at the links below.
- Utility-Scale Wind Turbines
- Small Wind Turbines
- Distributed Wind Energy
- Built-Environment Wind Turbines
- Community Wind Energy
- Offshore Wind Energy
The Energy Department provides publications, data, analysis, and more regarding wind energy research at R&D labs and facilities. Learn more at the Wind Technology Resource Center.
DOE Wind Programs & Information
- DOE's Wind Program works to improve the performance, lower the costs, and accelerate the deployment of innovative wind and water power technologies. Greater use of the nation's abundant wind and water resources for electric power generation will help stabilize energy costs, enhance energy security, and improve our environment.
- WINDExchange is a nationwide initiative designed to increase the use of wind energy across the United States by working with regional stakeholders. The WINDExchange program illustrates the Department of Energy's commitment to dramatically increase the use of wind energy in the United States. The WINDExchange website provides a wide range of wind-related information, including: State-by-state breakdowns of wind resource potential, success stories, installed wind capacity, news, events, and other resources, which are updated regularly.
- The National Wind Technology Center (NWTC) is the nation's premier wind energy technology research facility. The goal of the research conducted at NWTC is to help industry reduce the cost of energy so that wind can compete with traditional energy sources, providing a clean, renewable alternative for our nation's energy needs.
Wind Farm Development
- Understand your wind resource
- Evaluate distance from existing transmission lines
- Determine benefits of and barriers to allowing your land to be developed
- Establish access to capital
- Identify reliable power purchaser or market
- Address siting and project feasibility considerations
- Understand wind energy’s economics
- Obtain zoning and permitting expertise
- Establish dialogue with turbine manufacturers and project developers
- Secure agreement to meet O&M needs
The amount of land required for a wind farm varies considerably, and is particularly dependent on two key factors: the desired size of the wind farm (which can be defined either by installed capacity or the number of turbines) and the characteristics of the local terrain. Typically, wind turbine spacing is determined by the rotor diameter and local wind conditions. Some estimates suggest spacing turbines between 5 and 10 rotor diameters apart. If prevailing winds are generally from the same direction, turbines may be installed 3 or 4 rotor diameters apart (in the direction perpendicular to the prevailing winds); under multi-directional wind conditions, spacing of between 5 and 7 rotor diameters is recommended.
Equation for Wind Power
- Wind speed
- The amount of energy in the wind varies with the cube of the wind speed; in other words, if the wind speed doubles, there is eight times more energy in the wind (). Small changes in wind speed have a large impact on the amount of power available in the wind.
- Air density
- The more dense the air, the more energy received by the turbine. Air density varies with elevation and temperature. Air is less dense at higher elevations than at sea level, and warm air is less dense than cold air. All else being equal, turbines will produce more power at lower elevations and in locations with cooler average temperatures.
- Swept area of the turbine
- The larger the swept area (the size of the area through which the rotor spins), the more power the turbine can capture from the wind. Since swept area is , where r = radius of the rotor, a small increase in blade length results in a larger increase in the power available to the turbine.
Wind Decision Support Tools
- Wind Atlas Analysis and Application Program (WAsP) is a PC program for predicting wind resources and power productions from wind turbines and farms.
Global Renewable Resource Potential
Wind & Water Materials and Structures Database
- "US DOE EERE: Wind Program: How Wind Turbines Work"
- "Alaska Energy Authority. Introduction to Wind Resource Data"
- "U.S. Department of Energy. 2014 Distributed Wind Market Report"
- "U.S. Department of Energy. 2012 Market Report on U.S. Wind Technologies in Distributed Applications"
- "U.S. Department of Energy. Offshore Wind Technology"
- "EERE Wind Program"
- "AWEA: Ten Steps to Developing a Wind Farm (Updated 3-2010)"
- "Wind Power Project Site Identification and Land Requirements Prepared by: Global Energy Concepts and AWS Truewind, LLC"
- Gipe, Paul. (2009).Wind Energy Basics. Chelsea Green Publishing Company. ISBN 978-1-60358-030-4
- "Wind Energy Development Programmatic Environmental Impact Statement: Wind Energy Basics"