Site finder
Land beside high-voltage lines, close to a substation and out of the floodplain: a first list of places a large load or a generator might connect. Click a band on the map or a row in the list for its details.
9,130 bands along 11,991.9 miles of line match, sorted by voltage, largest first. Computed 9 Nov 2026. See the list
34,369.5 miles of line that meet the other criteria have no FEMA flood map to check, so they are left out. Untick “Leave out the floodplain” to see them, marked “No flood data”.
Key
- Candidate band: land within 1 mi of the line
- Lines, by voltage (wider is higher)
- 400 kV and up (500 kV)
- 288–399 kV (345 kV)
- 162–287 kV (230 kV)
- 100–161 kV (138 kV)
- 69–99 kV (69 kV)
- Voltage not stated
- Substation (from zoom 8)
- Land parcel, Texas (from zoom 12)
Lines and substations: © OpenStreetMap contributors, available under the Open Database License. Floodplain: FEMA National Flood Hazard Layer. Counties: U.S. Census Bureau TIGER/Line. Land parcels: Texas Geographic Information Office (TWDB), StratMap Land Parcels, data from Texas appraisal districts; not endorsed by the State of Texas, not survey grade. Retiring plants: EIA-860M; queue requests as each source credits them. Basemap: Protomaps, © OpenStreetMap contributors, ODbL. Full credits: Attribution.
| Line | Voltage, sorted descending. Sort by voltage, smallest first | Band length. Sort by band length, largest first | Nearest substation. Sort by distance to a substation, nearest first | Floodplain | County | Retiring MW within 5 mi. Sort by retiring and retired plant MW within 5 miles, largest first | Largest holding. Sort by largest same-owner holding beside the line, largest first |
|---|---|---|---|---|---|---|---|
| Entergy New Orleans 500 kV line (OSM way 12683890) Entergy New Orleans | 500 kV | 15.5 mi band | under 0.1 mi to a substation | Partly in, cut out | Newton County, TX | — | No parcels |
| Entergy New Orleans 500 kV line (OSM way 12683890) Entergy New Orleans | 500 kV | 13.0 mi band | 0.3 mi to a substation | Partly in, cut out | Newton County, TX | — | No parcels |
| Entergy 500 kV line (OSM way 167651281) Entergy | 500 kV | 7.6 mi band | 0.8 mi to a substation | Partly in, cut out | Jasper County, TX | — | No parcels |
| Entergy New Orleans 500 kV line (OSM way 12683890) Entergy New Orleans | 500 kV | 6.0 mi band | 4.3 mi to a substation | Partly in, cut out | Newton County, TX | — | No parcels |
| Entergy 500 kV line (OSM way 167651281) Entergy | 500 kV | 5.5 mi band | 0.8 mi to a substation | Partly in, cut out | Newton County, TX | — | No parcels |
| Entergy 500 kV line (OSM way 167651281) Entergy | 500 kV | 5.5 mi band | 0.1 mi to a substation | Partly in, cut out | Hardin County, TX | — | No parcels |
| Entergy New Orleans 500 kV line (OSM way 12683890) Entergy New Orleans | 500 kV | 5.5 mi band | 1.0 mi to a substation | Partly in, cut out | Newton County, TX | — | No parcels |
| Entergy Louisiana 500 kV line (OSM way 167651280) Entergy Louisiana | 500 kV | 4.0 mi band | 1.1 mi to a substation | Partly in, cut out | Calcasieu Parish, LA | — | No parcels |
| 345 kV line (OSM way 172356197) | 345 kV | 71.1 mi band | under 0.1 mi to a substation | Partly in, cut out | Van Zandt County, TX | — | No parcels |
| 345 kV line (OSM way 100064458) | 345 kV | 49.0 mi band | 0.1 mi to a substation | Partly in, cut out | Wharton County, TX | — | No parcels |
| 345 kV line (OSM way 172312401) | 345 kV | 37.6 mi band | under 0.1 mi to a substation | Partly in, cut out | Van Zandt County, TX | — | No parcels |
| NextEra Energy 345 kV line (OSM way 386799113) NextEra Energy | 345 kV | 32.3 mi band | 0.7 mi to a substation | Partly in, cut out | Navarro County, TX | — | No parcels |
| Xcel Energy 345 kV line (OSM way 1018942828) Xcel Energy | 345 kV | 30.0 mi band | 0.1 mi to a substation | Partly in, cut out | Lubbock County, TX | — | No parcels |
| CenterPoint Energy 345 kV line (OSM way 629598185) CenterPoint Energy | 345 kV | 27.6 mi band | 0.1 mi to a substation | Partly in, cut out | Waller County, TX | — | No parcels |
| CenterPoint Energy 345 kV line (OSM way 87308860) CenterPoint Energy | 345 kV | 26.7 mi band | 0.1 mi to a substation | Partly in, cut out | Waller County, TX | — | No parcels |
| Oncor 345 kV line (OSM way 172586879) Oncor | 345 kV | 25.1 mi band | 0.2 mi to a substation | Partly in, cut out | Freestone County, TX | 1,186.8 MW retiring nearby | No parcels |
| Oncor 345 kV line (OSM way 340440307) Oncor | 345 kV | 25.0 mi band | under 0.1 mi to a substation | Partly in, cut out | Lampasas County, TX | — | No parcels |
| CenterPoint Energy 345 kV line (OSM way 174317112) CenterPoint Energy | 345 kV | 24.9 mi band | 0.1 mi to a substation | Partly in, cut out | Brazoria County, TX | — | No parcels |
| 345 kV line (OSM way 171694582) | 345 kV | 23.3 mi band | 0.1 mi to a substation | Partly in, cut out | Fannin County, TX | 1,175.4 MW retiring nearby | No parcels |
| Oncor 345 kV line (OSM way 454866411) Oncor | 345 kV | 23.3 mi band | under 0.1 mi to a substation | Partly in, cut out | Wise County, TX | — | No parcels |
| 345 kV line (OSM way 147125224) | 345 kV | 23.1 mi band | 0.1 mi to a substation | Partly in, cut out | Johnson County, TX | — | No parcels |
| Lower Colorado River Authority 345 kV line (OSM way 146761307) Lower Colorado River Authority | 345 kV | 23.1 mi band | under 0.1 mi to a substation | Partly in, cut out | Travis County, TX | — | No parcels |
| 345 kV line (OSM way 171734089) | 345 kV | 23.0 mi band | 0.2 mi to a substation | Partly in, cut out | Taylor County, TX | — | No parcels |
| 345 kV line (OSM way 171853222) | 345 kV | 22.6 mi band | 0.2 mi to a substation | Partly in, cut out | Johnson County, TX | 1.3 MW retiring nearby | No parcels |
| 345 kV line (OSM way 102326934) | 345 kV | 21.7 mi band | 0.1 mi to a substation | Partly in, cut out | Harris County, TX | 13.3 MW retiring nearby | No parcels |
Sources OpenStreetMap · ERCOT · EIA-860M · EPA ICIS-NPDES · EPA ICIS-Air · FAA OE/AAA · FEMA NFHL · Census TIGER/Line · NSRDB · EIA Energy Atlas · PAD-US · USGS NSHM · NETL · US Census
© OpenStreetMap contributors · U.S. Department of Energy (DOE)/NLR/ALLIANCE · Modified by Inframation: clipped to the region served; fields renamed; not tax advice, and taxpayers may not rely on these data (DOE NETL).
Sources
- OpenStreetMap power network, US — transmission lines and cables (69 kV and up, or voltage not tagged) and substations, from Geofabrik's US state extracts© OpenStreetMap contributors. Power lines, cables and substations filtered and reshaped by Inframation from the OpenStreetMap elements in Overture Maps' base/infrastructure theme; this derived database is available under the Open Database License 1.0 as GeoParquet files at https://tiles.inframation.io/grid/osm-power/ (latest.json names the current version's files; licence: https://www.openstreetmap.org/copyright)
- ERCOT GIS Report (Generator Interconnection Status)
- EIA-860M Preliminary Monthly Electric Generator Inventory
- EPA ECHO ICIS-NPDES construction stormwater coverage (data-centre sites, national)
- EPA ECHO ICIS-Air national facility download (data-centre selection, placed through FRS)
- FAA OE/AAA Part 77 obstruction evaluation case archives (data-centre sites, buildings and cranes)
- FEMA National Flood Hazard Layer (NFHL) — Special Flood Hazard Areas and effective FIRM panels, state downloadsSource: FEMA National Flood Hazard Layer. Clipped by Inframation to 2 miles around 69 kV-and-up lines, split along FIRM panels and simplified to 10 m; not an official flood determination.
- US Census Bureau TIGER/Line® Shapefiles — counties and equivalent entities (full resolution), for the site finder's county and stateSource: U.S. Census Bureau, TIGER/Line® Shapefiles. County outlines simplified by 5 m by Inframation to name the county of each site-finder band; statistical boundaries, not legal land descriptions.
- NSRDB Physical Solar Model v3 multi-year (1998-2016) annual average GHI and DNI, 0.04 degree GIS rasters (National Laboratory of the Rockies, formerly NREL)Source: U.S. Department of Energy (DOE)/NLR/ALLIANCE, National Solar Radiation Database (NSRDB) PSM v3, 1998-2016 annual averages (Sengupta et al. 2018, Renewable and Sustainable Energy Reviews 89, 51-60). Clipped to the region served and stored as integers at 0.001 kWh/m²/day, the source's own precision.
- EIA — Tight oil and shale gas (low-permeability) plays, Lower 48 (US Energy Atlas feature service)Source: U.S. Energy Information Administration, Tight oil and shale gas plays, Lower 48 (2021 update; service of Feb 2022)
- EIA — Lower 48 sedimentary basins associated with the EIA shale plays (US Energy Atlas feature service)Source: U.S. Energy Information Administration, Lower 48 sedimentary basins (Feb 2024)
- USGS Gap Analysis Project — Protected Areas Database of the United States (PAD-US) 4.1, fee and designation feature classesU.S. Geological Survey (USGS) Gap Analysis Project (GAP), 2024, Protected Areas Database of the United States (PAD-US) 4 (version 4.1): U.S. Geological Survey data release, https://doi.org/10.5066/P96WBCHS
- USGS 2023 50-State National Seismic Hazard Model, revised (CONUS.2023.R2) — uniform-hazard PGA, 2% in 50 years, site class BC (Vs30 760 m/s), 0.05 degree gridAltekruse, J.M., Powers, P.M., and Milner, K.R., 2026, Mean Seismic Hazard Curves and Uniform-Hazard Ground Motion Values from the Revised 2023 US 50-state National Seismic Hazard Model: U.S. Geological Survey data release, https://doi.org/10.5066/P14VGAV4
- DOE NETL / IWG / Treasury — IRA energy community data layers (coal closure tracts and adjoining tracts; MSAs and non-MSAs meeting the fossil-fuel employment threshold)U.S. Department of Energy (DOE), National Energy Technology Laboratory (NETL), Interagency Working Group on Coal & Power Plant Communities & Economic Revitalization (IWG), U.S. Department of the Treasury, IRA Energy Community Data Layers, 4/3/2023, https://edx.netl.doe.gov/dataset/ira-energy-community-data-layers. Modified by Inframation: clipped to the region served; fields renamed; not tax advice, and taxpayers may not rely on these data (DOE NETL).
- US Census Bureau Cartographic Boundary Files — counties and states, 1:20,000,000 (region polygons for the map's region-grade proposals)
How the bands are found
Every OpenStreetMap power line of 69 kV and up is cut into half-mile segments. A segment passes when its line meets the voltage floor, a substation lies within the distance chosen, and, with the floodplain left out, FEMA’s digital flood map covers its band and at most 90% of the band is in the 1% annual-chance floodplain. Neighboring passing segments of one line join into one band; the floodplain is cut out of the band drawn on the map.
In Texas, appraisal-district parcels (compiled by TxGIO) show who holds the land beside the line without naming anyone: a holding is one owner’s parcels that touch or lie within 30 m of each other. “Contiguous acres” keeps the segments whose band touches that much land, from one holding or from neighboring holdings up to the owners chosen. Owner names are on the appraisal district's record; Inframation does not store them.
A screening list of corridor bands along public grid data, not a site assessment: it cannot see spare capacity at a substation, zoning, land ownership, easements or water. Ask the utility first.
Screening from FEMA's effective National Flood Hazard Layer at 10 m precision; not an official flood determination (44 CFR 65). Letters of map amendment are not applied.