These datasets detail the wind resource available in the United States.
50-m Data (Height above Ground/Surface)
These datasets are geographic shapefiles generated from original raster data, which varied in resolution from 200-m to 1,000-m cells. The data provide an estimate of annual average wind resource for states and regions. The data are separated into two groups: NREL-produced and AWS Truepower-produced/NREL-validated.
The NREL-produced map data only apply to areas of low surface roughness (e.g., grassy plains) and exclude areas with slopes greater than 20%. For areas of high surface roughness (e.g., forests), the values shown may need to be reduced by one or more power classes.
The Truepower-produced resource estimates factor in surface roughness in their calculations and do not exclude areas with slopes greater than 20%. These data were produced in cooperation with the U.S. Department of Energy WINDExchange program and have been validated by NREL and other wind energy meteorological consultants. To download state wind resource maps, visit the WINDExchange site.
Areas designated Class 3 or greater are suitable for most utility-scale wind turbine applications, whereas class 2 areas are marginal for utility-scale applications but may be suitable for rural applications. Class 1 areas are generally not suitable, although a few locations (e.g., exposed hilltops not shown on the maps) with adequate wind resource for wind turbine applications may exist in some Class 1 areas. The degree of certainty with which the wind power class can be specified depends on three factors: the abundance and quality of wind data, the complexity of the terrain, and the geographical variability of the resource. A certainty rating was assigned to each grid cell based on these three factors and is included in the Wind Energy Resource Atlas of the United States.
|10 m (33 ft)||50 m (164 ft)|
|Wind Power Density
|Speedb m/s (mph)||Wind Power Density
|Speedb m/s (mph)|
|100||4.4 (9.8)||200||5.6 (12.5)|
|150||5.1 (11.5)||300||6.4 (14.3)|
|200||5.6 (12.5)||400||7.0 (15.7)|
|250||6.0 (13.4)||500||7.5 (16.8)|
|300||6.4 (14.3)||600||8.0 (17.9)|
|400||7.0 (15.7)||800||8.8 (19.7)|
|1000||9.4 (21.1)||2000||11.9 (26.6)|
The available datasets are 50-meter hub height state and regional coverage. A 50-meter national coverage is not available, nor is high-resolution land-based data for Alabama, Florida, Louisiana, or Mississippi.
|Alaska Wind 50m height||Zip 187.3 MB||04/25/2012||Alaska.htm|
|Arizona Wind 50m height||Zip 14.3 MB||03/09/2009||Arizona.htm|
|Arkansas Wind 50m height||Zip 2.3 MB||05/18/2012||Arkansas.htm|
|California Wind 50m height||Zip 29.2 MB||05/18/2012||California.htm|
|Colorado Wind 50m height||Zip 16.2 MB||02/25/2009||Colorado.htm|
|Connecticut Wind 50m height||Zip 1.1 MB||03/02/2009||Connecticut.htm|
|Georgia Wind 50m height||Zip 1.4 MB||05/11/2012||Georgia.htm|
|Hawaii Wind 50m height||Zip 2.0 MB||05/04/2009||Hawaii.htm|
|Illinois Wind 50m height||Zip 790 KB||02/05/2009||Illinois.htm|
|Indiana Wind 50m height||Zip 2.7 MB||03/02/2009||Indiana.htm|
|Iowa Wind 50m height||Zip 2.2 MB||05/21/2012||Iowa.htm|
|Kansas Wind 50m height||Zip 11.5 MB||11/23/2009||Kansas.htm|
|Kentucky Wind 50m height||Zip 1.8 MB||03/07/2017||Kentucky.htm|
|Maine Wind 50m height||Zip 6.4 MB||03/02/2009||Maine.htm|
|Massachusetts Wind 50m height||Zip 2.6 MB||03/02/2009||Massachusetts.htm|
|Michigan Wind 50m height||Zip 11.6 MB||03/02/2009||Michigan.htm|
|Mid-Atlantic Regional Wind 50m height
||Zip 17.5 MB||05/21/2012||Mid Atlantic Regional.htm|
|Minnesota Wind 50m height||Zip 1.3 MB||06/26/2012||Minnesota.htm|
|Missouri Wind 50m height||Zip 9.8 MB||03/02/2009||Missouri.htm|
|Nebraska Wind 50m height||Zip 18.3 MB||02/23/2009||Nebraska.htm|
|Nevada Wind 50m height||Zip 16.7 MB||05/18/2012||Nevada.htm|
|New England Regional Wind 50m height
||Zip 3.2 MB||09/30/2010||New England Regional.htm|
|New Hampshire Wind 50m height||Zip 2.2 MB||03/02/2009||New Hampshire.htm|
|New Mexico Wind 50m height||Zip 24.6 MB||05/18/2012||New Mexico.htm|
|New York Wind 50m height||Zip 3.3 MB||05/22/2012||New York.htm|
|North and South Dakota Wind 50m height||Zip 2.3 MB||03/17/2009||North and South Dakota.htm|
|Ohio Wind 50m height||Zip 3.2 MB||03/02/2009||Ohio.htm|
|Oklahoma Wind 50m height||Zip 11.0 MB||06/04/2009||Oklahoma.htm|
|Pacific Northwest Regional Wind 50m height
||Zip 53.7 MB||06/11/2012||Pacific Northwest Regional.htm|
|Puerto Rico and Virgin Islands Wind 50m height||Zip 117 KB||04/01/2009||Puerto Rico and Virgin Islands.htm|
|Rhode Island Wind 50m height||Zip 623 KB||02/20/2009||Rhode Island.htm|
|South Carolina Wind 50m height||Zip 1.5 MB||05/18/2012||South Carolina.htm|
|Tennessee Wind 50m height||Zip 321 KB||03/02/2009||Tennessee.htm|
|Texas Wind 50m height||Zip 321 KB||06/22/2012||Texas.xml|
|Utah Wind 50m height||Zip 16.4 MB||05/18/2012||Utah.htm|
|Vermont Wind 50m height||Zip 2.2 MB||05/18/2012||Vermont.htm|
|Wisconsin Wind 50m height||Zip 3.5 MB||06/26/2012||Wisconsin.xml|
|United States Wind Power Class - no exclusions||Zip 22,771 KB||08/20/2015||—|
|United States Wind Power Class - with exclusions||Zip 74,225 KB||08/20/2015||—|
These datasets can be viewed via Google Earth. To do so, choose a KMZ link above.
90-m Offshore Data (Height Above Surface)
These data detail annual average offshore wind speed at a 90-meter height. To learn more, see Assessment of Offshore Wind Energy Resources for the United States.
|Atlantic Coast 90-m Windspeed Offshore Wind||Zip 19.7. MB||06/26/2012||Atlantic Coast.htm|
|Great Lakes 90-m Windspeed Offshore Wind||Zip 11.8 MB||08/23/2010||Great Lakes.htm|
|Gulf of Mexico 90-m Windspeed Offshore Wind||Zip 4.8 MB||08/23/2010||Gulf of Mexico.htm|
|Hawaii 90-m Windspeed Offshore Wind||Zip 4.2 MB||08/23/2010||Hawaii.htm|
|Pacific Coast 90-m Windspeed Offshore Wind||Zip 9.4 MB||08/23/2010||Pacific Coast.htm|
These zipped shapefile datasets are designed to be used in GIS software applications.
Web Service (application programming interfaces)
API Developer Network. Access data and analysis services that provide access to wind resource data and NREL models.
Western Wind Dataset
The Western Wind Dataset provides energy professionals with a consistent set of wind profiles across the western United States. This dataset provides 10-minute time-series wind data for 2004, 2005, and 2006. More than 30,000 data points are available across the western United States.
Eastern Wind Dataset
The Eastern Wind Dataset provides energy professionals with a consistent set of wind profiles for the eastern United States. This dataset provides 10-minute time-series wind data for 2004, 2005, and 2006. More than 1,326 simulated wind farm data points are available across the eastern United States.
Wind Integration National Dataset Toolkit
The Wind Integration National Dataset Toolkit is an update and expansion of the Eastern Wind Integration Data Set and Western Wind Integration Data Set. It supports the next generation of wind integration studies.
National Wind Technology Center Tower Data
The National Wind Technology Center Tower Data includes live graphical displays and wind data from a tower located at NREL’s National Wind Technology Center.