Proposed And Installed Offshore Wind Substations

Substations data for offshore wind projects includes both planned and built facilities, covering onshore and offshore locations. The Department of the Interior provides this information, updated as new public data is released, with the latest update in April 2026. Proposed designs are subject to change during the iterative review and permitting process.

Use Cases

• Modeling power flow from turbine arrays to the grid using substation location and type data.
• Assessing spatial constraints for project permitting by analyzing proposed versus installed substation coordinates.
• Planning cable routing between offshore and onshore substations using their geospatial positions.
• Tracking project development stages by comparing proposed substation designs with final built records.

Strengths

• Data distinguishes between proposed and installed substations, clarifying project status.
• Includes both offshore and onshore facility locations for full system analysis.
• Regular updates are applied as new public information becomes available.

Limitations

• Final buildout may differ from proposed designs presented in the data.
• Specific row counts, column details, and temporal coverage range are not provided.
• Data is provided by lessees for planning review, which may introduce reporting bias.

Provenance

Source

Department of the Interior

Collection Method

Data provided by the lessee for project planning, review, and permitting uses.

Time Range

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Freshness

Updated as new publicly available information is released; last platform update was 2026-04-04.

Geography

Covers offshore wind lease areas and associated onshore locations in the United States.