The USWTDB is available in a variety of downloadable file formats, in order to meet a range of user needs. The following file formats and associated metadata files include:
For the majority of users, the USGS Energy Resources Program has designed a dedicated USWTDB Viewer for visualization, analysis and dissemination of the USWTDB product. However, users who wish to consume the USWTDB web service can do so by using the RESTful service endpoints below. USWTDB web services can be consumed by GIS applications that support ArcGIS map services or OGC Web Map Service (WMS) specifications.
The USWTDB combines a 2014 USGS data set (48,956 wind turbines, including decommissioned and duplicate turbines) with a 2017 LBNL data set (43,827 wind turbines) and includes regular updates from AWEA’s WindIQ as well as the Federal Aviation Administration (FAA) Digital Obstacle File (DOF) and Obstacle Evaluation Airport Airspace Analysis (OE-AAA). The USWTDB is updated as frequently as quarterly as new data become available and will lag installations by approximately one quarter.
All turbine points in the data set are visually verified using high-resolution aerial imagery in ESRI ArcGIS Desktop, and X/Y locations are manually moved to the base of the turbine with an estimated locational tolerance of 10 meters. Visual verification also enables identification and removal of duplicate turbine points and decommissioned turbines from the database, although some decommissioned turbines likely have not yet been identified and thus remain in the data set. Moreover, because of a lag in obtaining up-to-date aerial imagery, some turbine locations have not been visually verified.
Technical specifications for turbines are assigned based on turbine make and model as described in literature, specifications listed in the FAA DOF, and collected via AWEA, LBNL, and turbine manufacturer websites. Because some make and model information does not exist or is difficult to obtain, uncertainty may exist for certain turbine specifications.
The uncertainties associated with location and attribute data quality are rated, and a confidence level is recorded. None of the data in the USWTDB are field verified.
The legacy version of the USGS wind project database was updated through 2014 and is incorporated into the USWTDB.
AWEA releases quarterly reports tracking utility-scale U.S. wind turbine installations.
The U.S. Department of Energy publishes several annual Wind Market Reports. These include reports on U.S. utility-scale wind projects—analyzing technology, cost, price, and performance trends along with broader industry developments and policy and market drivers—as well as reports on the offshore wind and distributed wind markets.
Diffendorfer, J.E., Kramer, L.A., Ancona, Z.H., and Garrity, C.P., 2015, Onshore industrial wind turbine locations for the United States up to March 2014, Scientific Data 2: 150060, http://dx.doi.org/10.1038/sdata.2015.60.
Diffendorfer, J.E., Compton, R.W., Kramer, L.A., Ancona, Z.H., and Norton, Donna, 2015, Onshore industrial wind turbine locations for the United States to March 2014: U.S. Geological Survey data release, https://doi.org/10.5066/F7251G8Q.
Diffendorfer, J.E., Compton, Roger, Kramer, L.A., Ancona, Zach, and Norton, Donna, 2014, Onshore industrial wind turbine locations for the United States through July 2013: U.S. Geological Survey data release, https://doi.org/10.5066/F7X06561.
Federal Aviation Administration, Digital Obstacles File, in Terrain and Obstacles Data (TOD) Team—Digital Obstacles File (DOF): Federal Aviation Administration, https://www.faa.gov/air_traffic/flight_info/aeronav/digital_products/dof/.
Federal Aviation Administration, Obstruction Evaluation Case Information, Obstruction Evaluation/Airport Airspace Analysis (OE/AAA) team, https://oeaaa.faa.gov/oeaaa/external/public/publicAction.jsp?action=showCaseDownloadForm.
U.S. Energy Information Administration, Form EIA-860 detailed data, in Electricity: U.S. Energy Information Administration, http://www.eia.gov/electricity/data/eia860/.